Civil Engineering Standard Method of Measurement

CESMM4Civil Engineering Standard Methodof Measurement

Fourth edition

Published by ICE Publishing, 40 Marsh Wall, London E14 9TP

Full details of ICE Publishing sales representatives and distributors can be found at:www.icevirtuallibrary.com/printbooksales

www.icevirtuallibrary.com

A catalogue record for this book is available from the British Library

ISBN 978-0-7277-5751-7

# Institution of Civil Engineers and the Civil Engineering Contractors Association, 2012

ICE Publishing is a division of Thomas Telford Ltd, a wholly-owned subsidiary of the Institution of CivilEngineers (ICE).

All rights, including translation, reserved. Except as permitted by the Copyright, Designs and PatentsAct 1988, no part of this publication may be reproduced, stored in a retrieval system or transmitted in

any form or by any means, electronic, mechanical, photocopying or otherwise, without the priorwritten permission of the Publisher, ICE Publishing, 40 Marsh Wall, London E14 9TP.

Whilst every care has been taken in the preparation of this document, neither the Institution of CivilEngineers nor the Civil Engineering Contractors Association nor any of their committees can acceptany liability for any loss or damage which may be suffered by any person or organisation as a result ofits use.

Senior Commissioning Editor: Gavin Jamieson

Production Editor: Imran MirzaMarket Development Executive: Catherine de Gatacre

Typeset by Academic þ Technical, BristolPrinted and bound in Great Britain by CPI Group (UK) Ltd, Croydon, CR0 4YY

Published by ICE Publishing, 40 Marsh Wall, London E14 9TP

Full details of ICE Publishing sales representatives and distributors can be found at:www.icevirtuallibrary.com/printbooksales

www.icevirtuallibrary.com

A catalogue record for this book is available from the British Library

ISBN 978-0-7277-5751-7

# Institution of Civil Engineers and the Civil Engineering Contractors Association, 2012

ICE Publishing is a division of Thomas Telford Ltd, a wholly-owned subsidiary of the Institution of CivilEngineers (ICE).

All rights, including translation, reserved. Except as permitted by the Copyright, Designs and PatentsAct 1988, no part of this publication may be reproduced, stored in a retrieval system or transmitted in

any form or by any means, electronic, mechanical, photocopying or otherwise, without the priorwritten permission of the Publisher, ICE Publishing, 40 Marsh Wall, London E14 9TP.

Whilst every care has been taken in the preparation of this document, neither the Institution of CivilEngineers nor the Civil Engineering Contractors Association nor any of their committees can acceptany liability for any loss or damage which may be suffered by any person or organisation as a result ofits use.

Senior Commissioning Editor: Gavin Jamieson

Production Editor: Imran MirzaMarket Development Executive: Catherine de Gatacre

Typeset by Academic þ Technical, BristolPrinted and bound in Great Britain by CPI Group (UK) Ltd, Croydon, CR0 4YY

Contents Preface vii

Foreword to the first edition viiiForeword to the second edition ixForeword to the third edition xForeword to the fourth edition xi

Section 1. Definitions 1

Section 2. General principles 2

Section 3. Application of the work classification 3

Section 4. Coding and numbering of items 5

Section 5. Preparation of the Bill of Quantities 6

Section 6. Completion, pricing and use of the Bill of Quantities 11

Section 7. Method-related charges 12

Section 8. Work classification 13

Class A: General items, 14

Class B: Ground investigation, 18

Class C: Geotechnical and other specialist processes, 26

Class D: Demolition and site clearance, 30

Class E: Earthworks, 32

Class F: In situ concrete, 38

Class G: Concrete ancillaries, 42

Class H: Precast concrete, 46

Class I: Pipework – pipes, 48

Class J: Pipework – fittings and valves, 50

Class K: Pipework – manholes and pipework ancillaries, 52

Class L: Pipework – supports and protection, ancillaries to laying and

excavation, 56

Class M: Structural metalwork, 60

Class N: Miscellaneous metalwork, 62

Class O: Timber, 64

Class P: Piles, 66

Class Q: Piling ancillaries, 70

Class R: Roads and pavings, 74

Class S: Rail track, 78

Class T: Tunnels, 84

Class U: Brickwork, blockwork and masonry, 90

Class V: Painting, 94

Class W: Waterproofing, 96

Class X: Miscellaneous work, 98

Class Y: Sewer and water main renovation and ancillary works, 100

Class Z: Simple building works incidental to civil engineering works, 104

v

Preface The Civil Engineering Standard Method of Measurement, fourth edition (CESMM4), has

been approved by the sponsors – the Institution of Civil Engineers and the CivilEngineering Contractors Association – for use in works of civil engineeringconstruction. This fourth edition supersedes the third edition published in 1991.

CESMM4 may be used with any conditions of contract for civil engineering work thatincludes measurement.

The Committee under whose guidance CESMM4 has been prepared will keep the use ofthe document under review and consider any suggestions for amendment. These shouldbe addressed to The Secretary, The Institution of Civil Engineers, 1–7 Great George

Street, London SW1P 3AA. Revision of the document will be made when such actionseems warranted.

vii

Foreword to thefirst edition

In 1964, the Council of the Institution of Civil Engineers set up a Committee under theChairmanship of T. A. L. (now Sir Angus) Paton, CMG, BSc(Eng), FICE, to proposerevisions to the Standard Method of Measurement of Civil Engineering Quantities. In

1971 the work of revision was undertaken by Martin Barnes, PhD, BSc(Eng), MICE,who worked initially under an agreement with the University of Manchester Institute ofScience and Technology and, after he left the University in 1972, under a direct

agreement with the Institution of Civil Engineers. A Steering Committee was appointedby the Council of the Institution of Civil Engineers to supervise the work. The SteeringCommittee was enlarged in 1972 by the appointment of an additional representative

from each of the Institution of Civil Engineers, the Association of Consulting Engineersand the Federation of Civil Engineering Contractors. The members of the committee(�indicates member appointed in 1971) were

�D. C. Coode, FICE, FIEAust, Chairman�M. Agar, BSc, FICE, FIStructE, Institution of Civil EngineersF. J. Cave, BSc, FICE, FRICS, MTPI, FIMunE, FRSH, Institution of Civil

Engineers�H. R. Oakley, MSc(Eng), FICE, MIWE, FASCE, Association of ConsultingEngineers

P. B. Ahm, MSc, FICE, Association of Consulting Engineers�R. B. Hill, BSc, FICE, FIStructE, Federation of Civil Engineering ContractorsJ. A. Sneden, FRICS, FIQS, Federation of Civil Engineering Contractors

J. B. B. Newton, BSc(Eng), FICE, co-optedN. C. B. Brierley, BSc(Eng), FICE, co-opted

Late in 1972, a draft of the revised standard method of measurement was circulated for

comment to 71 representative bodies. Trial Bills of Quantities were prepared by 20organizations. Discussions with interested bodies continued throughout 1973 and 1974and the form of the present document owes much to the suggestions made during this

time by bodies outside the committee. The Steering Committee is indebted to the manypeople who helped in this way.

The object of the work has been to make improvements while retaining the goodfeatures of the previous edition of the standard method of measurement. The principalimprovements sought are

(a) to standardize the layout and contents of Bills of Quantities prepared accordingto the standard method of measurement

(b) to provide a systematic structure of bill items leading to more uniform

itemization and description(c) to review the subdivision of work into items so that a more sensitive and

balanced description of the value of work in a contract is provided

(d ) to take account of new techniques in civil engineering construction andmanagement, their influence on the work itself and on the administration ofcontracts.

A Bill of Quantities which in essence is no more than a price list of the PermanentWorks no longer adequately reflects the many variables in the cost of civil engineeringconstruction which have resulted from developments in constructional techniques and

methods. It has therefore been decided to provide for some additional items of measuredwork and for other items, entered at the option of the tenderer, directly related tomethods of construction.

A system of work classification has been adopted as the basis of the method ofmeasurement so that Bills of Quantities can be compiled and used more easily. The

system should enable much of the repetitive clerical work associated with the use of Billsof Quantities to be simplified, and make the use of computers easier.

The Work Classification incorporates a reference number for each type of workcomponent. These reference numbers may be used as a simple code for identification ofwork. Their use as part of the item numbers in Bills of Quantities is suggested, but isoptional. The coding is sufficiently flexible not to inhibit description of the particular

work in each contract.

viii

Foreword to thefirst edition

In 1964, the Council of the Institution of Civil Engineers set up a Committee under theChairmanship of T. A. L. (now Sir Angus) Paton, CMG, BSc(Eng), FICE, to proposerevisions to the Standard Method of Measurement of Civil Engineering Quantities. In

1971 the work of revision was undertaken by Martin Barnes, PhD, BSc(Eng), MICE,who worked initially under an agreement with the University of Manchester Institute ofScience and Technology and, after he left the University in 1972, under a direct

agreement with the Institution of Civil Engineers. A Steering Committee was appointedby the Council of the Institution of Civil Engineers to supervise the work. The SteeringCommittee was enlarged in 1972 by the appointment of an additional representative

from each of the Institution of Civil Engineers, the Association of Consulting Engineersand the Federation of Civil Engineering Contractors. The members of the committee(�indicates member appointed in 1971) were

�D. C. Coode, FICE, FIEAust, Chairman�M. Agar, BSc, FICE, FIStructE, Institution of Civil EngineersF. J. Cave, BSc, FICE, FRICS, MTPI, FIMunE, FRSH, Institution of Civil

Engineers�H. R. Oakley, MSc(Eng), FICE, MIWE, FASCE, Association of ConsultingEngineers

P. B. Ahm, MSc, FICE, Association of Consulting Engineers�R. B. Hill, BSc, FICE, FIStructE, Federation of Civil Engineering ContractorsJ. A. Sneden, FRICS, FIQS, Federation of Civil Engineering Contractors

J. B. B. Newton, BSc(Eng), FICE, co-optedN. C. B. Brierley, BSc(Eng), FICE, co-opted

Late in 1972, a draft of the revised standard method of measurement was circulated for

comment to 71 representative bodies. Trial Bills of Quantities were prepared by 20organizations. Discussions with interested bodies continued throughout 1973 and 1974and the form of the present document owes much to the suggestions made during this

time by bodies outside the committee. The Steering Committee is indebted to the manypeople who helped in this way.

The object of the work has been to make improvements while retaining the goodfeatures of the previous edition of the standard method of measurement. The principalimprovements sought are

(a) to standardize the layout and contents of Bills of Quantities prepared accordingto the standard method of measurement

(b) to provide a systematic structure of bill items leading to more uniform

itemization and description(c) to review the subdivision of work into items so that a more sensitive and

balanced description of the value of work in a contract is provided

(d ) to take account of new techniques in civil engineering construction andmanagement, their influence on the work itself and on the administration ofcontracts.

A Bill of Quantities which in essence is no more than a price list of the PermanentWorks no longer adequately reflects the many variables in the cost of civil engineeringconstruction which have resulted from developments in constructional techniques and

methods. It has therefore been decided to provide for some additional items of measuredwork and for other items, entered at the option of the tenderer, directly related tomethods of construction.

A system of work classification has been adopted as the basis of the method ofmeasurement so that Bills of Quantities can be compiled and used more easily. The

system should enable much of the repetitive clerical work associated with the use of Billsof Quantities to be simplified, and make the use of computers easier.

The Work Classification incorporates a reference number for each type of workcomponent. These reference numbers may be used as a simple code for identification ofwork. Their use as part of the item numbers in Bills of Quantities is suggested, but isoptional. The coding is sufficiently flexible not to inhibit description of the particular

work in each contract.

viii

Foreword to thesecond edition

In 1983, the Council of the Institution of Civil Engineers instructed the CESMMReview Committee to prepare a second edition of the Civil Engineering Standard Methodof Measurement. The members of the Review Committee were

H. R. Oakley, CBE, FEng, MSc(Eng), FICE, ChairmanD. C. Coode, CBE, FCGI, FICE

N. C. B. Brierley, BSc(Eng), FICEN. M. L. Barnes, BSc(Eng), PhD, FICE, FCIOB, ACIArb, MBCS

The work of analysing the comments received on the first edition and of drafting thesecond edition was undertaken by Martin Barnes and Partners who were assisted byMcGill and Partners.

Many organizations contributed comments and suggestions for amendment of thedocument and others participated by reviewing drafts and giving advice. The ReviewCommittee is indebted to the many people who helped in this way, and particularly to

the Federation of Civil Engineering Contractors who appointed a committee to reviewand comment upon the drafts.

The object of the amendments made in the second edition was twofold. Firstly it was totake account of developments in civil engineering technology and in the significance ofdifferent costs of civil engineering work which have taken place since the first edition

was published. Secondly it was to take the opportunity of altering the wording of thesmall number of provisions of the first edition which experience had shown were notworking either as smoothly as they might or in the way which had been intended. Thesecond edition of the CESMM is consequently not a radical departure from the first

edition, but an update and general overhaul.

The two most noticeable changes are the categorization and upgrading of the former

notes in the work classification and the introduction of a standard method ofmeasurement for sewer renovation work. The rearrangement of the former notes isintended to make the document easier to use in two ways. Firstly, the notes have been

re-named rules in order to emphasize that their provisions govern how work should bedescribed and measured in civil engineering bills of quantities and that they have equalstatus with rules in any other part of the document. Secondly, they have been dividedinto four categories to indicate the four separate functions which they perform and

have, as far as possible, been laid out alongside the parts of the classification tables towhich they relate.

The section for measurement of sewer renovation work has been introduced in order toprovide for the considerably increased volume of work of this type now beingundertaken. The method of measurement for sewer renovation in this document is based

upon that devised originally for the Water Research Centre and included in theirstandard specification. The Institution of Civil Engineers and the Federation of CivilEngineering Contractors acknowledge the assistance given by the Water Research

Centre in allowing this method of measurement to be embodied in the CESMM.

ix

Foreword to thethird edition

Although the second edition of the Civil Engineering Standard Method of Measurementwas published in 1985, a number of factors have combined to cause the need for a thirdedition. The main changes incorporated in the third edition (CESMM3) are amendments

to enable its use with the ICE Conditions of Contract, sixth edition (January 1991), andthe introduction of a standard method of measurement for water main renovation andfor simple building works incidental to civil engineering works (classes Y and Z).

Account has also been taken of developments in civil engineering technology and theopportunity taken to make minor amendments and corrections to the text of the secondedition. There are no changes in principle or in the general arrangement.

The Review Committee is indebted to a number of organizations and individuals whohave contributed comments and suggestions for amendment. The committee isparticularly indebted to E. C. Harris: Quantity Surveying whose proposals formed the

basis for the new class Z. The work of analysing the comments and suggestions anddrafting CESMM3 was undertaken by Coopers & Lybrand Deloitte.

The members of the Review Committee were

H. R. Oakley, CBE, FEng, MSc(Eng), FICE, Chairman

N. M. L. Barnes, FEng, BSc(Eng), PhD, FICE, FCIOB, ACIArb, MBCS, CBIMMiss R. Beales, Barrister-at-LawJ. Banyard, MICE

H. A. Jones, MICE, Secretary

The committee is indebted to Dr Barnes of Coopers and Lybrand Deloitte for hisinvaluable advice and assistance throughout.

x

Foreword to thethird edition

Although the second edition of the Civil Engineering Standard Method of Measurementwas published in 1985, a number of factors have combined to cause the need for a thirdedition. The main changes incorporated in the third edition (CESMM3) are amendments

to enable its use with the ICE Conditions of Contract, sixth edition (January 1991), andthe introduction of a standard method of measurement for water main renovation andfor simple building works incidental to civil engineering works (classes Y and Z).

Account has also been taken of developments in civil engineering technology and theopportunity taken to make minor amendments and corrections to the text of the secondedition. There are no changes in principle or in the general arrangement.

The Review Committee is indebted to a number of organizations and individuals whohave contributed comments and suggestions for amendment. The committee isparticularly indebted to E. C. Harris: Quantity Surveying whose proposals formed the

basis for the new class Z. The work of analysing the comments and suggestions anddrafting CESMM3 was undertaken by Coopers & Lybrand Deloitte.

The members of the Review Committee were

H. R. Oakley, CBE, FEng, MSc(Eng), FICE, Chairman

N. M. L. Barnes, FEng, BSc(Eng), PhD, FICE, FCIOB, ACIArb, MBCS, CBIMMiss R. Beales, Barrister-at-LawJ. Banyard, MICE

H. A. Jones, MICE, Secretary

The committee is indebted to Dr Barnes of Coopers and Lybrand Deloitte for hisinvaluable advice and assistance throughout.

x

Foreword to thefourth edition

Since its introduction in 1976, the Civil Engineering Standard Method of Measurement(CESMM) has proved to be extremely resilient in meeting the needs of those engaged inpreparing contracts based on traditional ‘measure & value’ principles. There were

updates in 1985, and 1991, which were largely concerned with introducing new WorkClassifications for renovation of water mains and sewers, together with updating toaccord with revised versions of the ICE Conditions of Contract; a little tidying up to

deal with specific problems that had emerged; and updating references to BritishStandards contained in the Work Classification.

However by 2009 it was being suggested that CESMM required updating to meetcurrent engineering practice and procedure, and a review was initiated by the Institution

of Civil Engineers. The review concluded that an update was indeed necessary.

The industry had changed substantially since CESMM had been introduced over35 years ago. When it was first published, most work was carried out under the ICEConditions of Contract, or FIDIC, which were broadly similar to one another. Today

there is a variety of contracts for civil engineering including NEC and the InfrastructureConditions of Contract (formerly known as the ICE Conditions of Contract).Additionally some Clients have adopted standard forms produced by other engineeringinstitutions, and large projects are sometimes let on bespoke contracts drawn up by

specialist lawyers, which may or may not have some similarity to one or other of themany ‘standard forms’ now available.

The challenge of updating references to technical standards had been identified, and isincreased by the use of CESMM in other countries which have their own national

standards and for whom British Standards are no longer relevant. Therefore, a decisionwas taken to remove most references to British Standards. As a consequence ifStandards are used these have to be clearly identified in the contract documents.

Finally the review identified that in some cases, although the main contract may well be

lump sum or target cost, contractors use CESMM for tendering purposes, and in somecases let sub-contracts on the basis of re-measurement, not withstanding that the maincontract is not on a remeasurement basis.

To deal with the issues raised by these practices, since there is far less standardisation

than there was when CESMM was first published, two major changes to this 4thEdition of CESMM have been introduced:

1. The document is ‘contract neutral’. That is to say it does not depend on any

particular form of contract, but of course the contract must accommodate ameasure & value approach. It is therefore necessary for the Bill compiler toidentify in the Preamble the relevant clauses within the conditions of contract

adopted. Additionally the terminology and responsibility of individuals varies fromcontract to contract (e.g. terms such as ‘The Engineer to the Contract’ have beensuperseded in some standard forms), but the responsibilities and designation of

these individuals within the Method of Measurement must accord with the chosencontract. Therefore a schedule has been introduced into the Preamble as amandatory requirement to ensure that this need for consistency between thecontract documents and the Method of Measurement is not overlooked.

2. The document is generally ‘National Standard neutral’; that is, there is limitedreference to British or other national standards and that information must be givenelsewhere on the drawings or in the specification. There are two exceptions to this

principle where it has proved impossible to produce Bill items without reference tosome form of standard classification. These are:

a. Concrete mixesb. Road construction.

In these two cases the latest British Standards and Specification for Highways

Works available from The Stationery Office have been adopted, including the datesof publication. It is essential that when billing this type of work compilers docheck that these standards are indeed the ones to which they wish to refer to and,

if not, complete the schedule in the Preamble and modify the item descriptionsaccordingly. It is simply not possible to republish CESMM every time that astandard is updated.

xi

The opportunity has also been taken to update a number of other areas, and deal with afew known problems that have emerged over the years.

A CESMM advisory service has been established since publication of CESMM and willcontinue for CESMM4. However, it is not in a position to advise on derivatives ofCESMM.

Finally CESMM4 retains essentially the same principles as when the document was firstpublished, and it is a great tribute to the authors of that first edition that they were able

to produce a methodology that has proved so resilient to the changing practices andprocedures within the construction industry. It is the intention of the Review Committeethat this edition will serve its users as well as the earlier editions have done.

The Review Committee received advice and helpful comments from a wide range oforganisations and individual practitioners, and would like to express its gratitude to allof them for the assistance they provided.

The drafting of CESMM4 was undertaken by Richard McGill; for the update of Class SRail Track assistance was provided by Network Rail, who attended the latter meetings

of the Committee.

The members of the Review Committee were

J. K. Banyard OBE, FREng, FCGI, BSc(Eng), FICE, FCIWEMR. Beales, Barrister at LawW. Edwards BSc, Dip Arb, FICE, FCIHT, MCInstCES, FCIArb

T. Pemberton MA, MLitJ. Fiske MACostE, BSc(Hons)R. E. N. McGill FRICS

R. Gerrard BSc(Hons), FRICS, FCIArb, FCInstCESP. Schwanethal FCInstCES, MCIArbSecretariat: J. Hawkins MSc

S. Hernandez BSc, MSc

xii

The opportunity has also been taken to update a number of other areas, and deal with afew known problems that have emerged over the years.

A CESMM advisory service has been established since publication of CESMM and willcontinue for CESMM4. However, it is not in a position to advise on derivatives ofCESMM.

Finally CESMM4 retains essentially the same principles as when the document was firstpublished, and it is a great tribute to the authors of that first edition that they were able

to produce a methodology that has proved so resilient to the changing practices andprocedures within the construction industry. It is the intention of the Review Committeethat this edition will serve its users as well as the earlier editions have done.

The Review Committee received advice and helpful comments from a wide range oforganisations and individual practitioners, and would like to express its gratitude to allof them for the assistance they provided.

The drafting of CESMM4 was undertaken by Richard McGill; for the update of Class SRail Track assistance was provided by Network Rail, who attended the latter meetings

of the Committee.

The members of the Review Committee were

J. K. Banyard OBE, FREng, FCGI, BSc(Eng), FICE, FCIWEMR. Beales, Barrister at LawW. Edwards BSc, Dip Arb, FICE, FCIHT, MCInstCES, FCIArb

T. Pemberton MA, MLitJ. Fiske MACostE, BSc(Hons)R. E. N. McGill FRICS

R. Gerrard BSc(Hons), FRICS, FCIArb, FCInstCESP. Schwanethal FCInstCES, MCIArbSecretariat: J. Hawkins MSc

S. Hernandez BSc, MSc

xii Civil Engineering Standard Method of MeasurementISBN 978-0-7277-5751-7

ICE Publishing: All rights reserved

doi: 10.1680/cesmm.57517.001

Section 1

Definitions

1.1. In this document and in Bills of Quantities prepared according to the procedureset forth herein the following words and expressions have the meanings hereby assignedto them, except where the context otherwise requires.

1.2. The word ‘work’ includes work to be carried out, goods, materials and services tobe supplied, and the liabilities, obligations and risks to be undertaken by the contractorunder the contract.

1.3. The contract administrator may be the employer, his agent or representative.

1.4. The expression ‘expressly required’ means shown on the drawings, described in theSpecification or instructed by the contract administrator pursuant to the contract.

1.5. ‘Bill of Quantities’ means a list of items giving brief identifying descriptions andestimated quantities of the work comprised in a contract.

1.6. ‘Daywork’ means the method of valuing work on the basis of time spent by theoperatives, the materials used and the plant employed.

1.7. ‘Work Classification’ means the Work Classification set out in section 8.

1.8. ‘Original Surface’ means the surface of the ground before any work has been car-ried out.

1.9. ‘Final Surface’ means the surface indicated on the drawings to which excavation isto be carried out.

1.10. ‘Commencing Surface’ means, in relation to an item in a Bill of Quantities, thesurface of the ground before any work covered by the item has been carried out. ‘Com-mencing Surface’ means, in relation to a group of items in a Bill of Quantities for workin different materials in an excavation or a bored, drilled or driven hole, the surface ofthe ground before any work covered by any item in the group has been carried out.

1.11. ‘Excavated Surface’ means, in relation to an item in a Bill of Quantities, the sur-face to which excavation included in the work covered by the item is to be carried out.‘Excavated Surface’ means, in relation to a group of items in a Bill of Quantities forexcavation in different materials, the surface to which excavation included in the workcovered by any item in the group is to be carried out.

1.12. A hyphen between two dimensions means a range of dimensions which includesall dimensions exceeding that preceding the hyphen but not exceeding that following thehyphen.

1

Section 2

General principles

Title applicationand extent

2.1. The title of this document is the Civil Engineering Standard Method of Measure-ment, fourth edition, which is abbreviated to CESMM4. CESMM4 is intended to beused only for civil engineering works and simple building works incidental to civilengineering works.

2.2. CESMM4 provides for simple building works incidental to civil engineering worksto be measured in accordance with Class Z. CESMM4 does not deal with the prepara-tion of Bills of Quantities for complex mechanical or electrical engineering work, or com-plex building work or work which is seldom encountered in civil engineering contracts.Where any such work is to be included in a contract for civil engineering work, it shallbe itemized and described in the Bill of Quantities in sufficient detail to enable tenderersto price it adequately and the method of measurement shall be stated in the Preamble tothe Bill of Quantities in accordance with paragraph 5.4.

Object of CESMM4 2.3. The object of CESMM4 is to set forth the procedure according to which the Billof Quantities shall be prepared and priced and the quantities of work expressed andmeasured.

Objects of the Billof Quantities

2.4. The objects of the Bill of Quantities are

(a) to provide such information of the quantities of work as to enable tenders to be pre-pared efficiently and accurately

(b) when a contract has been entered into, to provide for use of the priced Bill of Quan-tities in the valuation of work executed.

2.5. In order to attain these objects, work should be itemized in the Bill of Quantitiesin sufficient detail for it to be possible to distinguish between the different classes ofwork, and between work of the same nature carried out in different locations or in anyother circumstances which may give rise to different considerations of cost. Consistentwith these requirements the layout and content of the Bill of Quantities should be assimple and brief as possible.

2.6. All work which is expressly required should be covered in the Bill of Quantities.

2.7. CESMM4 seeks to attain these objects principally by the use of the Work Classifi-cation. This defines

(a) how work is to be divided into separate items in the Bill of Quantities(b) the information to be given in item descriptions(c) the units in which the quantities against each item are to be expressed(d ) how the work is to be measured for the purpose of calculating quantities.

2

Section 2

General principles

Title applicationand extent

2.1. The title of this document is the Civil Engineering Standard Method of Measure-ment, fourth edition, which is abbreviated to CESMM4. CESMM4 is intended to beused only for civil engineering works and simple building works incidental to civilengineering works.

2.2. CESMM4 provides for simple building works incidental to civil engineering worksto be measured in accordance with Class Z. CESMM4 does not deal with the prepara-tion of Bills of Quantities for complex mechanical or electrical engineering work, or com-plex building work or work which is seldom encountered in civil engineering contracts.Where any such work is to be included in a contract for civil engineering work, it shallbe itemized and described in the Bill of Quantities in sufficient detail to enable tenderersto price it adequately and the method of measurement shall be stated in the Preamble tothe Bill of Quantities in accordance with paragraph 5.4.

Object of CESMM4 2.3. The object of CESMM4 is to set forth the procedure according to which the Billof Quantities shall be prepared and priced and the quantities of work expressed andmeasured.

Objects of the Billof Quantities

2.4. The objects of the Bill of Quantities are

(a) to provide such information of the quantities of work as to enable tenders to be pre-pared efficiently and accurately

(b) when a contract has been entered into, to provide for use of the priced Bill of Quan-tities in the valuation of work executed.

2.5. In order to attain these objects, work should be itemized in the Bill of Quantitiesin sufficient detail for it to be possible to distinguish between the different classes ofwork, and between work of the same nature carried out in different locations or in anyother circumstances which may give rise to different considerations of cost. Consistentwith these requirements the layout and content of the Bill of Quantities should be assimple and brief as possible.

2.6. All work which is expressly required should be covered in the Bill of Quantities.

2.7. CESMM4 seeks to attain these objects principally by the use of the Work Classifi-cation. This defines

(a) how work is to be divided into separate items in the Bill of Quantities(b) the information to be given in item descriptions(c) the units in which the quantities against each item are to be expressed(d ) how the work is to be measured for the purpose of calculating quantities.

2

Section 3

Application of the work classification

Item descriptions 3.1. The Work Classification divides work commonly encountered in civil engineeringcontracts into 26 main classes. Each class comprises up to three divisions which classifywork at successive levels of detail. Each division comprises a list of up to eight descrip-tive features of work. Each item description in the Bill of Quantities shall identify thecomponent of work covered with respect to one feature from each division of therelevant class, for example

Class H (precast concrete) contains three divisions of classification. The first classifiesdifferent types of precast concrete units, the second classifies different units by theirdimensions, and the third classifies them by their mass. Each item description forprecast concrete units shall therefore identify the component of work in terms of thetype of unit, its dimensions and mass.

Mode ofdescription

3.2. To avoid unnecessary length, item descriptions for permanent works shall generallyidentify the component of the works and not the tasks to be carried out by the contrac-tor, for example

An item should be described as ‘Plain round mild steel bar reinforcement to nominalsize 20 mm’, not as ‘Supply, deliver, cut, bend and fix plain round mild steel barreinforcement to nominal size 20 mm’.

3.3. Where the work identified by an item is specifically limited, the limitation shall bestated in the item description, for example

‘Plain round mild steel bar reinforcement to nominal size 20 mm excluding supply anddelivery to the Site.’

Item descriptions for work which is divided between two classes require such limitations tobe stated, for example

Item descriptions for miscellaneous metalwork inserts which are to be cast intoconcrete require appropriate additional description if items are given in both Class Gfor casting in the inserts and Class N for supplying the inserts.

An item should be described as ‘Plain round mild steel bar reinforcement to nominal size20 mm’, not as ‘Supply, deliver, cut, bend and fix plain round mild steel bar reinforcementto nominal size 20 mm’.

Separate items 3.4. The work shall be divided into items in the Bill of Quantities so that the compo-nent of work which is included in each item does not exhibit more than one feature fromeach division of any one class of the Work Classification, for example

One item for precast concrete work shall not include more than one of the types ofconcrete unit listed in the first division of Class H, neither shall it include differentunits whose dimensions are not within one of the classifications listed in the seconddivision of Class H, nor shall it include different units whose mass does not lie withinone of the ranges listed in the third division of Class H.

Units ofmeasurement

3.5. The unit of measurement for each item shall be that stated for the item in theWork Classification. The unit of measurement stated against a descriptive feature inthe Work Classification shall apply to all items to which that descriptive featureapplies.

3

Measurementrules

3.6. Measurement rules in the Work Classification set out the conditions under whichwork shall be measured and the method by which the quantities shall be computed ifother than in accordance with paragraph 5.19.

Definition rules 3.7. Definition rules in the Work Classification define the extent and limits of the classof work represented by a word or expression used in the Work Classification and in aBill of Quantities prepared in accordance with CESMM4.

Coverage rules 3.8. Coverage rules in the Work Classification provide that the work stated is deemedto be included in the appropriate items to the extent that such work is included in thecontract. A coverage rule does not state all the work covered by an item and does notpreclude any of the work stated being covered by a Method-Related Charge.

Additionaldescription rules

3.9. Description of an item in addition to that required in accordance with paragraph3.1 shall be given where required by any provision of section 5 or by any applicableadditional description rule in the Work Classification. Where additional description isgiven, a separate item shall be given for each component of work exhibiting a differentadditional feature, for example

Additional description rule A1 of Class H requires that the specification of theconcrete in each precast concrete unit shall be stated. Accordingly, this rule also meansthat separate items shall be given for units cast from concrete of differentspecifications.

3.10. Where a descriptive feature in the Work Classification identifies a range or groupof dimensions and an applicable additional description rule requires the particulardimension to be stated, the range or group of dimensions shall not also be stated, forexample

Additional description rule A2 of Class I requires that the nominal bores of pipes shallbe stated in item descriptions. The range of nominal bore taken from the seconddivision of the classification of Class I shall not also be stated.

Applicability ofrules

3.11. Rules printed on a right-hand page above a double line apply to all work in theclass. Other rules on a right-hand page apply to particular groups of items as shown bythe classification table.

4

Measurementrules

3.6. Measurement rules in the Work Classification set out the conditions under whichwork shall be measured and the method by which the quantities shall be computed ifother than in accordance with paragraph 5.19.

Definition rules 3.7. Definition rules in the Work Classification define the extent and limits of the classof work represented by a word or expression used in the Work Classification and in aBill of Quantities prepared in accordance with CESMM4.

Coverage rules 3.8. Coverage rules in the Work Classification provide that the work stated is deemedto be included in the appropriate items to the extent that such work is included in thecontract. A coverage rule does not state all the work covered by an item and does notpreclude any of the work stated being covered by a Method-Related Charge.

Additionaldescription rules

3.9. Description of an item in addition to that required in accordance with paragraph3.1 shall be given where required by any provision of section 5 or by any applicableadditional description rule in the Work Classification. Where additional description isgiven, a separate item shall be given for each component of work exhibiting a differentadditional feature, for example

Additional description rule A1 of Class H requires that the specification of theconcrete in each precast concrete unit shall be stated. Accordingly, this rule also meansthat separate items shall be given for units cast from concrete of differentspecifications.

3.10. Where a descriptive feature in the Work Classification identifies a range or groupof dimensions and an applicable additional description rule requires the particulardimension to be stated, the range or group of dimensions shall not also be stated, forexample

Additional description rule A2 of Class I requires that the nominal bores of pipes shallbe stated in item descriptions. The range of nominal bore taken from the seconddivision of the classification of Class I shall not also be stated.

Applicability ofrules

3.11. Rules printed on a right-hand page above a double line apply to all work in theclass. Other rules on a right-hand page apply to particular groups of items as shown bythe classification table.

4

Section 4

Coding and numbering of items

Coding 4.1. For convenience of reference each item in the Work Classification has beenassigned a code number consisting of a letter and not more than three digits. The lettercorresponds to the class in the Work Classification in which the item occurs and thedigits give the position of the item in the first, second and third divisions of the class, forexample

Code H 1 3 6 identifies an item as

class H precast concrete

first division 1 beams

second

division

3 length 7–10m

third division 6 mass 5–10 t

4.2. The symbol � is used in the rules to the Work Classification to indicate all numbersin the appropriate division, for example

H 1 3 � means the group of code numbers from H 1 3 1 to H 1 3 8 inclusive.

Item numbers 4.3. Code numbers may be used to number the items in the Bill of Quantities, the itemswithin the Bill of Quantities being listed in order of ascending code number.

4.4. Code numbers used as item numbers in the Bill of Quantities shall not form partof the item descriptions or be taken into account in the interpretation of the contract.

Coding ofunclassified items

4.5. Where a feature of an item is not listed in the Work Classification the digit 9 shallbe used in the appropriate positions in the code number.

4.6. Where there is an item to which a division of classification does not apply or forwhich fewer than three divisions of classification are given the digit 0 shall be used in theappropriate positions in the code number.

Numbering ofitems withadditionaldescription

4.7. Additional description given for an item in accordance with paragraph 3.9 is notrepresented by the code number. Where code numbers are used as item numbers a suffixnumber shall be used to distinguish items which have the same code number but differ-ent additional description, for example

Additional description rule A1 of Class H requires that additional description be givenfor precast concrete units stating their position in the works and the specification ofthe concrete used. If three items are required within one part of the Bill of Quantitiesto allow for precast concrete beams having the same code but different additionaldescription, the items should be numbered

H 1 3 6. 1

H 1 3 6. 2

H 1 3 6. 3

5

Section 5

Preparation of the Bill of Quantities

Measurement ofcompleted work

5.1. Appropriate provisions of this section shall also apply to the measurement ofcompleted work.

Sections of the Billof Quantities

5.2. The Bill of Quantities shall be divided into the following sections.

(a) List of principal quantities(b) Preamble(c) Daywork Schedule(d ) Work items (grouped into parts)(e) Grand Summary.

List of principalquantities

5.3. A list of the principal components of the works with their approximate estimatedquantities shall be given solely to assist tenderers in making a rapid assessment of thegeneral scale and character of the proposed works prior to the examination of theremainder of the Bill of Quantities and the other contractual documents on which theirtenders will be based.

Preamble 5.4. The Preamble shall state the methods of measurement other than CESMM4, ifany, which have been adopted in the preparation of the Bill of Quantities and are to beused for the measurement of any part of the works. Such methods of measurement shallcomprise those adopted and to be used for any work not covered by CESMM4 and anyamendments to CESMM4 which have been adopted and are to be used. Amendmentscomprising abbreviation of CESMM4 are usually necessary for contractor-designed workand work which is intended to involve selection between alternatives at the discretion ofthe contractor. The extent of the work affected by all amendments to CESMM4 shall bestated in the Preamble.

5.5. Where excavation, boring or driving is included in the work a definition of ‘rock’shall be given in the Preamble and this definition shall be used for the purposes ofmeasurement.

5.6. The Method of Measurement is designed to be contract and generally specificationneutral. It is therefore necessary to ensure that there is compatibility between theMethod of Measurement and the Conditions of Contract used on the project. To achievethis a schedule must be included in the Preamble to the Bill of Quantities indicating theclause in the Conditions of Contract that defines the terminology used in the Method ofMeasurement.

A schedule is given below of terms found within CESMM4 where such cross reference isrequired but, if there are amendments made to CESMM4, then further cross referencesmay be required.

If a term is not referred to in a particular contract (e.g. 6.5 Contract price fluctuation), thenthe schedule should state ‘Not applicable’ rather than being left blank.

6

Section 5

Preparation of the Bill of Quantities

Measurement ofcompleted work

5.1. Appropriate provisions of this section shall also apply to the measurement ofcompleted work.

Sections of the Billof Quantities

5.2. The Bill of Quantities shall be divided into the following sections.

(a) List of principal quantities(b) Preamble(c) Daywork Schedule(d ) Work items (grouped into parts)(e) Grand Summary.

List of principalquantities

5.3. A list of the principal components of the works with their approximate estimatedquantities shall be given solely to assist tenderers in making a rapid assessment of thegeneral scale and character of the proposed works prior to the examination of theremainder of the Bill of Quantities and the other contractual documents on which theirtenders will be based.

Preamble 5.4. The Preamble shall state the methods of measurement other than CESMM4, ifany, which have been adopted in the preparation of the Bill of Quantities and are to beused for the measurement of any part of the works. Such methods of measurement shallcomprise those adopted and to be used for any work not covered by CESMM4 and anyamendments to CESMM4 which have been adopted and are to be used. Amendmentscomprising abbreviation of CESMM4 are usually necessary for contractor-designed workand work which is intended to involve selection between alternatives at the discretion ofthe contractor. The extent of the work affected by all amendments to CESMM4 shall bestated in the Preamble.

5.5. Where excavation, boring or driving is included in the work a definition of ‘rock’shall be given in the Preamble and this definition shall be used for the purposes ofmeasurement.

5.6. The Method of Measurement is designed to be contract and generally specificationneutral. It is therefore necessary to ensure that there is compatibility between theMethod of Measurement and the Conditions of Contract used on the project. To achievethis a schedule must be included in the Preamble to the Bill of Quantities indicating theclause in the Conditions of Contract that defines the terminology used in the Method ofMeasurement.

A schedule is given below of terms found within CESMM4 where such cross reference isrequired but, if there are amendments made to CESMM4, then further cross referencesmay be required.

If a term is not referred to in a particular contract (e.g. 6.5 Contract price fluctuation), thenthe schedule should state ‘Not applicable’ rather than being left blank.

6

Specific clauses The following section references in CESMM4 require an appropriate clause and terms inthe Conditions of Contract to be drafted to define the term. The schedule shall be replicatedin the Preamble to the Bill of Quantities, together with any further required cross referencesand be completed by the Bill compiler, before the Bill is issued to other parties.

CESMM4 Section Reference Contract Provision

1.3 Contract administrator

2.4 Valuation of work executed

5.1 Measurement of completed work

5.2 Daywork Schedule

5.16 Prime cost items

5.16 Nominated Sub-contractor

5.18 Provision sums

6.1 Currency of contract

6.4 Interim payments

Interim certificates

Retention moneys

Completion

6.5 Contract price fluctuation

7.6 Admeasurement

Valuing changes

7.7 Method-Related Charges

8 Class A Coverage rule C1

Class F Definition rule D1

Class R Definition rule D1

y

y

y To be completed by the Bill compiler.

7

Daywork Schedule 5.7. The Daywork Schedule, if any, shall comprise either

(a) a list of the various classes of labour, materials and plant for which daywork ratesor prices are to be inserted by the tenderer together with a statement of the condi-tions under which the contractor shall be paid for work executed on a dayworkbasis, or

(b) a statement that the contractor shall be paid for work executed on a daywork basisat rates and prices calculated by adding the percentage additions stated in thestandard schedule included in the contract to the rates and prices contained in theaforementioned schedules and by making further adjustments as follows.

Labour addition/deduction� of — yper centMaterials addition/deduction� of — yper centPlant addition/deduction� of — yper centOther charges addition/deduction� of — yper cent� Appropriate deletion to be made by the contractor when tendering

y Percentage to be inserted by the contractor when tendering

5.8. Provisional Sums for work executed on a daywork basis may be given comprisingseparate items for labour, materials, plant and other charges. Where a Daywork Scheduleof the form stated in sub-paragraph (b) of paragraph 5.7 is used each Provisional Sumshall be followed by an item for the adjustment referred to in that sub-paragraph. Theprice inserted against each such item shall be calculated by applying the percentageaddition or deduction inserted by the contractor in the Daywork Schedule to theamount of the associated Provisional Sum.

Work itemsDivision of the Bill ofQuantities into parts

5.9. The items in the Bill of Quantities which are to be priced and to contribute to theTender Total may be arranged into numbered parts to distinguish between those parts ofthe work of which the nature, location, access, limitation on sequence or timing or anyother special characteristic is thought likely to give rise to different methods of construc-tion or considerations of cost. General items (Class A) may be grouped as a separatepart of the Bill of Quantities. Items in each part shall be arranged in the general order ofthe Work Classification.

Headings andsub-headings

5.10. Each part of the Bill of Quantities shall be given a heading and groups of itemswithin each part be given sub-headings. Headings and sub-headings shall be read as partof the item descriptions to which they apply. A line shall be drawn across the itemdescription column below the last item to which each heading or sub-heading applies.Headings and sub-headings shall be repeated at the start of each new page which listsitems to which they apply.

Extent of itemizationand description

5.11. All work shall be itemized and the items shall be described in accordance withthe Work Classification, but further itemization and additional description may beprovided if the nature, location, importance or any other special characteristic of thework is thought likely to give rise to special methods of construction or considerationsof cost.

Descriptions 5.12. Descriptions shall identify the work covered by the respective items, but theexact nature and extent of the work is to be ascertained from the Drawings, Specificationand Conditions of Contract, as the case may be, read in conjunction with the WorkClassification.

5.13. Any detail of description required to be given in accordance with the WorkClassification may be omitted from an item description provided that a reference is givenin its place which identifies precisely where the omitted information may be found on adrawing or in the Specification.

5.14. Where an item description compiled in accordance with the Work Classificationwould be insufficient to identify clearly the particular work covered by the item

8

Daywork Schedule 5.7. The Daywork Schedule, if any, shall comprise either

(a) a list of the various classes of labour, materials and plant for which daywork ratesor prices are to be inserted by the tenderer together with a statement of the condi-tions under which the contractor shall be paid for work executed on a dayworkbasis, or

(b) a statement that the contractor shall be paid for work executed on a daywork basisat rates and prices calculated by adding the percentage additions stated in thestandard schedule included in the contract to the rates and prices contained in theaforementioned schedules and by making further adjustments as follows.

Labour addition/deduction� of — yper centMaterials addition/deduction� of — yper centPlant addition/deduction� of — yper centOther charges addition/deduction� of — yper cent� Appropriate deletion to be made by the contractor when tendering

y Percentage to be inserted by the contractor when tendering

5.8. Provisional Sums for work executed on a daywork basis may be given comprisingseparate items for labour, materials, plant and other charges. Where a Daywork Scheduleof the form stated in sub-paragraph (b) of paragraph 5.7 is used each Provisional Sumshall be followed by an item for the adjustment referred to in that sub-paragraph. Theprice inserted against each such item shall be calculated by applying the percentageaddition or deduction inserted by the contractor in the Daywork Schedule to theamount of the associated Provisional Sum.

Work itemsDivision of the Bill ofQuantities into parts

5.9. The items in the Bill of Quantities which are to be priced and to contribute to theTender Total may be arranged into numbered parts to distinguish between those parts ofthe work of which the nature, location, access, limitation on sequence or timing or anyother special characteristic is thought likely to give rise to different methods of construc-tion or considerations of cost. General items (Class A) may be grouped as a separatepart of the Bill of Quantities. Items in each part shall be arranged in the general order ofthe Work Classification.

Headings andsub-headings

5.10. Each part of the Bill of Quantities shall be given a heading and groups of itemswithin each part be given sub-headings. Headings and sub-headings shall be read as partof the item descriptions to which they apply. A line shall be drawn across the itemdescription column below the last item to which each heading or sub-heading applies.Headings and sub-headings shall be repeated at the start of each new page which listsitems to which they apply.

Extent of itemizationand description

5.11. All work shall be itemized and the items shall be described in accordance withthe Work Classification, but further itemization and additional description may beprovided if the nature, location, importance or any other special characteristic of thework is thought likely to give rise to special methods of construction or considerationsof cost.

Descriptions 5.12. Descriptions shall identify the work covered by the respective items, but theexact nature and extent of the work is to be ascertained from the Drawings, Specificationand Conditions of Contract, as the case may be, read in conjunction with the WorkClassification.

5.13. Any detail of description required to be given in accordance with the WorkClassification may be omitted from an item description provided that a reference is givenin its place which identifies precisely where the omitted information may be found on adrawing or in the Specification.

5.14. Where an item description compiled in accordance with the Work Classificationwould be insufficient to identify clearly the particular work covered by the item

8

additional description shall be given to identify the work by reference to its location orother physical features shown on the Drawings or described in the Specification.

Ranges of dimensions 5.15. Where all the components of work included in an item are of one dimensionwithin a range given in the Work Classification that dimension may be stated in the itemdescription in place of the range of dimensions given.

Prime Cost Items 5.16. The estimated price of work to be carried out by a Nominated Sub-contractorshall be given in the Bill of Quantities as a Prime Cost Item. Each Prime Cost Item shallbe followed by

(a) an item for a sum for labours in connection therewith which, in the absence of anyexpress provision in the contract to the contrary, shall include only(i) in any case in which the Nominated Sub-contractor is to carry out work on the

Site for allowing him to use temporary roads, scaffolding, hoists, messrooms,sanitary accommodation and welfare facilities which are provided by thecontractor for his own use and for providing space for office accommodationand storage of plant and materials, for disposing of rubbish and for providinglight and water for the work of the Nominated Sub-contractor, and

(ii) in any case in which the Nominated Sub-contractor is not to carry out work onthe Site for unloading, storing and hoisting materials supplied by him andreturning packing materials, and

(b) an item expressed as a percentage of the price of the Prime Cost Item in respect ofall other charges and profit.

5.17. Where any goods, materials or services supplied by a Nominated Sub-contractorare to be used by the contractor in connection with any item, reference shall be made inthe description of that item, or in the appropriate heading or sub-heading, to the PrimeCost Item under which the goods or materials or services are to be supplied.

Provisional Sums 5.18. Provision for contingencies shall be made by giving Provisional Sums in the Billof Quantities and not by increasing the quantities beyond those of the work expected tobe required. Provisional Sums for Defined Work shall be included where work is knownto be required but the scope of the work cannot be completely designed but the scopecan be defined. A Provisional Sum for a general contingency allowance shall be given inthe Grand Summary in accordance with paragraph 5.26.

Quantities 5.19. The quantities shall be computed net using dimensions from the Drawings, unlessdirected otherwise by a measurement rule in CESMM4 or by the Contract, and noallowance shall be made for bulking, shrinkage or waste. Quantities may be rounded upor down where appropriate. Fractional quantities are not generally necessary and shouldnot be given to more than one place of decimals.

Units of measurement 5.20. The following units of measurement and abbreviations shall be used.

Unit Abbreviation

Millimetre mm

Metre m

Square

millimetre

mm2 or mm2

Square metre m2 or m2

Hectare ha

Cubic metre m3 or m3

Kilogramme kg

Tonne t

Sum sum

Number nr

Hour h

Week wk

9

Work affected bywater

5.21. Where an existing body of open water (other than groundwater) such as a river,stream, canal, lake or body of tidal water is either on the Site or bounds the Site, eachbody of water shall be identified in the Preamble to the Bill of Quantities. A referenceshall also be given to a drawing indicating the boundaries and surface level of each bodyof water or, where the boundaries and surface levels fluctuate, their anticipated ranges offluctuation.

Ground andexcavation levels

5.22. The Commencing Surface shall be identified in the description of each item forwork involving excavation, boring or driving for which the Commencing Surface is notthe Original Surface. The Excavated Surface shall be identified in the description of eachitem for work involving excavation for which the Excavated Surface is not the FinalSurface. The depths of excavation stated in accordance with the Work Classificationshall be measured from the Commencing Surface to the Excavated Surface.

5.23. Provision shall be made for the amounts inserted on each page to be totalled andcarried to a summary of each part of the Bill of Quantities and for the total of each PartSummary to be carried to the Grand Summary.

Grand Summary 5.24. The Grand Summary shall contain a tabulation of the parts of the Bill of Quanti-ties with provision for insertion of the total of the amounts brought forward from thePart Summaries.

General ContingencyAllowance

5.25. An item for a general contingency (the General Contingency Allowance), ifinstructed by the employer, shall be given in the Grand Summary following the total ofthe amounts brought forward from the Part Summaries.

Adjustment Item 5.26. An item described as the Adjustment Item shall be given in the Grand Summaryfollowing the total of the amounts brought forward from the Part Summaries and theGeneral Contingency Allowance, if any (see paragraphs 6.3 and 6.4).

Total of the Priced Billof Quantities

5.27. Provision shall be made for insertion of the total of the amounts brought forwardfrom the Part Summaries, the amount of the General Contingency Allowance, if any,and the amount of the Adjustment Item.

10

Work affected bywater

5.21. Where an existing body of open water (other than groundwater) such as a river,stream, canal, lake or body of tidal water is either on the Site or bounds the Site, eachbody of water shall be identified in the Preamble to the Bill of Quantities. A referenceshall also be given to a drawing indicating the boundaries and surface level of each bodyof water or, where the boundaries and surface levels fluctuate, their anticipated ranges offluctuation.

Ground andexcavation levels

5.22. The Commencing Surface shall be identified in the description of each item forwork involving excavation, boring or driving for which the Commencing Surface is notthe Original Surface. The Excavated Surface shall be identified in the description of eachitem for work involving excavation for which the Excavated Surface is not the FinalSurface. The depths of excavation stated in accordance with the Work Classificationshall be measured from the Commencing Surface to the Excavated Surface.

5.23. Provision shall be made for the amounts inserted on each page to be totalled andcarried to a summary of each part of the Bill of Quantities and for the total of each PartSummary to be carried to the Grand Summary.

Grand Summary 5.24. The Grand Summary shall contain a tabulation of the parts of the Bill of Quanti-ties with provision for insertion of the total of the amounts brought forward from thePart Summaries.

General ContingencyAllowance

5.25. An item for a general contingency (the General Contingency Allowance), ifinstructed by the employer, shall be given in the Grand Summary following the total ofthe amounts brought forward from the Part Summaries.

Adjustment Item 5.26. An item described as the Adjustment Item shall be given in the Grand Summaryfollowing the total of the amounts brought forward from the Part Summaries and theGeneral Contingency Allowance, if any (see paragraphs 6.3 and 6.4).

Total of the Priced Billof Quantities

5.27. Provision shall be made for insertion of the total of the amounts brought forwardfrom the Part Summaries, the amount of the General Contingency Allowance, if any,and the amount of the Adjustment Item.

10

Section 6

Completion, pricing and use of the Bill ofQuantities

Insertion of ratesand prices

6.1. Rates and prices shall be inserted in the rate column of the Bill of Quantities in thecurrency of the contract.

Parts to betotalled

6.2. Each part of the Bill of Quantities shall be totalled and the totals carried to theGrand Summary.

Adjustment Item 6.3. A tenderer may insert a lump sum addition or deduction against the AdjustmentItem given in the Grand Summary in adjustment of the total of the priced Bill ofQuantities.

6.4. For the purposes of interim payments additions or deductions on account of theamount, if any, of the Adjustment Item shall be made by instalments in interim certificatesin the proportion that the amount bears to the total of the priced Bill of Quantities beforethe addition or deduction of the amount of the Adjustment Item and a statement to thiseffect shall appear in the Preamble to the Bill of Quantities. Such interim additions ordeductions shall be made before deduction of the retention moneys if any, and shall notexceed in the aggregate the amount of the Adjustment Item. If by the date of thecompletion of the works any balance of the amount of the Adjustment Item is outstand-ing it shall be added to or deducted from the moneys then due.

6.5. For the purposes of a contract price fluctuations clause, if applicable, account shallbe taken of any addition to or deduction from the amounts due to the contractor inrespect of the Adjustment Item.

11

Section 7

Method-related charges

Definitions 7.1. For the purposes of this section the following words and expressions shall have themeanings hereby assigned to them.

(a) ‘Method-Related Charge’ means the sum for an item inserted in the Bill of Quanti-ties by a tenderer in accordance with paragraph 7.2.

(b) ‘Time-Related Charge’ means a Method-Related Charge for work the cost of whichis to be considered as proportional to the length of time taken to execute the work.

(c) ‘Fixed Charge’ means a Method-Related Charge which is not a Time-RelatedCharge.

Insertion by atenderer

7.2. A tenderer may insert in the Bill of Quantities such items for Method-RelatedCharges as he may decide to cover items of work relating to his intended method ofexecuting the Works, the costs of which are not to be considered as proportional to thequantities of the other items and for which he has not allowed in the rates and prices forthe other items.

Itemization 7.3. Where possible the itemization of Method-Related Charges should follow theorder of classification and the other requirements set out in class A of the Work Classifica-tion, distinguishing between Time-Related Charges and Fixed Charges. Method-RelatedCharges may be inserted to cover items of work other than those set out in class A.

Description 7.4. Each item for a Method-Related Charge inserted in the Bill of Quantities shall befully described so as to define precisely the extent of the work covered and to identifythe resources to be used and the particular items of Permanent Works or TemporaryWorks, if any, to which the item relates.

Contractor notbound to adoptmethod

7.5. The insertion by the contractor of an item for a Method-Related Charge in the Billof Quantities when tendering shall not bind him to adopt the method stated in the itemdescription in executing the Works.

Charges not to bemeasured

7.6. Method-Related Charges shall not be subject to admeasurement but shall bedeemed to be prices for the purposes of valuing changes to the works and revisions torates as a consequence of a change in quantity arising from admeasurement.

Payment 7.7. Method-Related Charges shall be certified and paid in accordance with the con-tract and a statement to this effect shall appear in the Preamble to the Bill of Quantities.

Payment whenmethod notadopted

7.8. In the event of the satisfactory execution of any part of the works which has beenthe subject of an item for a Method-Related Charge using, whether in whole or in part,a method other than that described in the item the contractor shall nevertheless beentitled to payment of the Method-Related Charge or the balance thereof, as the casemay be, by such installments at such times and upon such events as may from time totime be agreed between the contract administrator and the contractor. In default of suchagreement the Method-Related Charge, or the balance then unpaid, shall be treated as ifit were an addition to the Adjustment Item referred to in paragraphs 6.3, 6.4 and 6.5and allowed to the contractor by way of payments in interim certificates. The amount ofa Method-Related Charge shall be neither increased nor decreased by reason only of anychange in method made by the contractor, unless such change has been ordered by thecontract administrator, in which case the provisions of the contract in valuing changesshall apply.

12

Section 7

Method-related charges

Definitions 7.1. For the purposes of this section the following words and expressions shall have themeanings hereby assigned to them.

(a) ‘Method-Related Charge’ means the sum for an item inserted in the Bill of Quanti-ties by a tenderer in accordance with paragraph 7.2.

(b) ‘Time-Related Charge’ means a Method-Related Charge for work the cost of whichis to be considered as proportional to the length of time taken to execute the work.

(c) ‘Fixed Charge’ means a Method-Related Charge which is not a Time-RelatedCharge.

Insertion by atenderer

7.2. A tenderer may insert in the Bill of Quantities such items for Method-RelatedCharges as he may decide to cover items of work relating to his intended method ofexecuting the Works, the costs of which are not to be considered as proportional to thequantities of the other items and for which he has not allowed in the rates and prices forthe other items.

Itemization 7.3. Where possible the itemization of Method-Related Charges should follow theorder of classification and the other requirements set out in class A of the Work Classifica-tion, distinguishing between Time-Related Charges and Fixed Charges. Method-RelatedCharges may be inserted to cover items of work other than those set out in class A.

Description 7.4. Each item for a Method-Related Charge inserted in the Bill of Quantities shall befully described so as to define precisely the extent of the work covered and to identifythe resources to be used and the particular items of Permanent Works or TemporaryWorks, if any, to which the item relates.

Contractor notbound to adoptmethod

7.5. The insertion by the contractor of an item for a Method-Related Charge in the Billof Quantities when tendering shall not bind him to adopt the method stated in the itemdescription in executing the Works.

Charges not to bemeasured

7.6. Method-Related Charges shall not be subject to admeasurement but shall bedeemed to be prices for the purposes of valuing changes to the works and revisions torates as a consequence of a change in quantity arising from admeasurement.

Payment 7.7. Method-Related Charges shall be certified and paid in accordance with the con-tract and a statement to this effect shall appear in the Preamble to the Bill of Quantities.

Payment whenmethod notadopted

7.8. In the event of the satisfactory execution of any part of the works which has beenthe subject of an item for a Method-Related Charge using, whether in whole or in part,a method other than that described in the item the contractor shall nevertheless beentitled to payment of the Method-Related Charge or the balance thereof, as the casemay be, by such installments at such times and upon such events as may from time totime be agreed between the contract administrator and the contractor. In default of suchagreement the Method-Related Charge, or the balance then unpaid, shall be treated as ifit were an addition to the Adjustment Item referred to in paragraphs 6.3, 6.4 and 6.5and allowed to the contractor by way of payments in interim certificates. The amount ofa Method-Related Charge shall be neither increased nor decreased by reason only of anychange in method made by the contractor, unless such change has been ordered by thecontract administrator, in which case the provisions of the contract in valuing changesshall apply.

12

Section 8

Work classification

Class A: General items, 14

Class B: Ground investigation, 18

Class C: Geotechnical and other specialist processes, 26

Class D: Demolition and site clearance, 30

Class E: Earthworks, 32

Class F: In situ concrete, 38

Class G: Concrete ancillaries, 42

Class H: Precast concrete, 46

Class I: Pipework – pipes, 48

Class J: Pipework – fittings and valves, 50

Class K: Pipework – manholes and pipework ancillaries, 52

Class L: Pipework – supports and protection, ancillaries to laying and excavation, 56

Class M: Structural metalwork, 60

Class N: Miscellaneous metalwork, 62

Class O: Timber, 64

Class P: Piles, 66

Class Q: Piling ancillaries, 70

Class R: Roads and pavings, 74

Class S: Rail track, 78

Class T: Tunnels, 84

Class U: Brickwork, blockwork and masonry, 90

Class V: Painting, 94

Class W: Waterproofing, 96

Class X: Miscellaneous work, 98

Class Y: Sewer and water main renovation and ancillary works, 100

Class Z: Simple building works incidental to civil engineering works, 104

13

14

CLASS A: GENERAL ITEMS

Includes: General obligations, site services and facilities, Temporary Works, testing of materials and work, Provisional Sumsand Prime Cost ItemsItems to cover elements of the cost of the work which are not to be considered as proportional to the quantitiesof the Permanent Works

FIRST DIVISION SECOND DIVISION THIRD DIVISION

1 Contractual requirements 1 Performance bond2 Insurances3 Parent company guarantee

2 Specified requirements 1 Accommodation for the contractadministrators

1 Offices2 Laboratories3 Cabins

2 Services for the contractadministrators

1 Transport vehicles2 Telephones

3 Equipment for use by the contractadministrators

1 Office equipment2 Laboratory equipment3 Surveying equipment

4 Attendance upon the contractadministrators

1 Drivers2 Chainmen3 Laboratory assistants

5 Testing of materials6 Testing of the Works

7 Temporary Works 1 Traffic diversions2 Traffic regulation3 Access roads4 Bridges5 Cofferdams6 Pumping7 De-watering8 Compressed air for tunnelling

3 Method-Related Charges

(Continued )

1 Accommodation and buildings 1 Offices2 Laboratories3 Cabins4 Stores5 Canteens and messrooms

2 Services 1 Electricity2 Water3 Security4 Hoardings5 Site transport6 Personnel transport7 Welfare

3 Plant 1 Cranes2 Transport3 Earthmoving4 Compaction5 Concrete mixing6 Concrete transport7 Pile driving8 Pile boring

4 Plant 1 Pipelaying2 Paving3 Tunnelling4 Crushing and screening5 Boring and drilling

MEASUREMENT RULES DEFINITION RULES COVERAGE RULES ADDITIONAL DESCRIPTIONRULES

M1 The unit of measurement forgeneral items may be the sum,except where another unit ofmeasurement is used inaccordance with rule M2.

M2 An item may be given for aParent Company Guaranteewhere it is envisaged a tenderermay be a subsidiary of a largercompany or group.

C1 Items for insurances classed ascontractual requirements

M3 A quantity shall be givenagainst all items for specifiedrequirements of which the valueis to be ascertained anddetermined by admeasurement.A unit of measurement shall bestated for each such item.

D1 All work other than thepermanent works which isexpressly stated in the contractto be carried out by thecontractor and of which thenature and extent is expresslystated in the contract shall beclassed as specifiedrequirements.

A1 Item descriptions for workclassed as specifiedrequirements which is to becarried out after the date forcompletion shall so state.

A2 Item descriptions for workclassed as specifiedrequirements shall distinguishbetween the establishment andremoval of services or facilitiesand their continuing operationor maintenance.

M4 Items shall be given in thisclass for all testing for whichitems are not given separately asset out in other classes.

A3 Item descriptions for testingof materials and testing of theworks shall include particulars ofsamples and of methods oftesting.

M5 Items for Method-RelatedCharges, if any, shall be insertedby the tenderer in accordancewith section 7.

A4 Item descriptions forMethod-Related Charges shalldistinguish between Fixed andTime-Related Charges.

15

CLASS A

16

CLASS A

FIRST DIVISION SECOND DIVISION THIRD DIVISION

3 Method-Related Charges (continued) 5 Temporary Works 1 Traffic diversions2 Traffic regulation3 Access roads4 Bridges5 Cofferdams6 Pumping7 De-watering8 Compressed air for tunnelling

6 Temporary Works 1 Access scaffolding2 Support scaffolding and propping3 Piling4 Formwork5 Shafts and pits6 Hardstandings

7 Supervision and labour 1 Supervision2 Administration3 Labour teams

4 Provisional Sums 1 Daywork 1 Labour2 Percentage adjustment to

Provisional Sum for Dayworklabour

3 Materials4 Percentage adjustment to

Provisional Sum for Dayworkmaterials

5 Plant6 Percentage adjustment to

Provisional Sum for Dayworkplant

7 Other charges8 Percentage adjustment to

Provisional Sum for Dayworkother charges

2 Provisional Sums – Defined Work

5 Nominated Sub-contracts which include work on theSite

6 Nominated Sub-contracts which do not include workon the Site

1 Prime Cost Item2 Labours3 Special labours4 Other charges and profit

NOTE

Method-Related Charges may be inserted by the tenderer in accordance with paragraph 7.2 for insurances additional to those classed ascontractual requirements.

MEASUREMENT RULES DEFINITION RULES COVERAGE RULES ADDITIONAL DESCRIPTIONRULES

M6 Items for percentageadjustment to Provisional Sumsfor Daywork shall be given onlywhere a Daywork Schedule inaccordance with alternative form(b) of paragraph 5.6 is given inthe Bill of Quantities.Adjustments shall be insertedagainst such items to correspondwith the adjustments, if any,inserted by the tenderer in theDaywork Schedule.

M7 Provisional Sums – DefinedWork shall be given where thescope of the work cannot becompletely designed but wherethe scope can be defined inrule C2.

D2 Provisional Sums – DefinedWork where the scope of thework cannot be completelydesigned but where the scopecan be defined

C2 Where Provisional Sums –Defined Work are included theTenderer is deemed to have madedue allowances for theprogramming, planning andpricing of the Works within hisGeneral Items.

A5 Item descriptions forProvisional Sums – DefinedWork shall state the nature ofthe work, indicative quantitiesof the scope and extent of thework.

M8 Each Prime Cost Item shallbe followed by an item forlabours and an item for othercharges and profit in accordancewith paragraph 5.15. Wherelabours other than or in additionto those stated in sub-paragraph(a) of paragraph 5.15 are to beprovided the item for laboursshall be designated as for speciallabours.

A6 Item descriptions for PrimeCost Items shall identify thework included.

A7 The labours shall be stated initem descriptions for speciallabours.

17

CLASS A

18

CLASS B: GROUND INVESTIGATION

Includes: Trial pits and trenches, boreholes, samples, site and laboratory tests, instrumental observations and professionalservices in connection with ground investigation

Excludes: Excavation not carried out for the purpose of ground investigation (included in class E) Boring for piling(included in classes P and Q)

FIRST DIVISION SECOND DIVISION THIRD DIVISION

1 Trial pits and trenches 1 Number in material other thanrock nr

2 Number in material whichincludes rock nr

1 Maximum depth:not exceeding 1 m

2 1–2 m3 2–3 m4 3–5 m5 5–10 m6 10–15 m7 15–20 m8 stated exceeding 20 m

3 Depth in material other thanrock m

4 Depth in rock m5 Depth supported m6 Depth backfilled, material stated m

7 Removal of obstructions h

8 Pumping at a stated minimumextraction rate h

2 Light cable percussion boreholes 1 Number nr

3 Depth m 1 In holes of maximum depth:not exceeding 5 m

2 5–10 m3 10–20 m4 20–30 m5 30–40 m6 stated exceeding 40 m

6 Depth backfilled, material stated m

7 Chiselling to prove rock or topenetrate obstructions h

3 Rotary drilled boreholes 1 Number nr

3 Depth without core recovery m4 Depth with core recovery m

1 In holes of maximum depth:not exceeding 5 m

2 5–10 m3 10–20 m4 20–30 m5 30–40 m6 stated exceeding 40 m

5 Depth cased m6 Depth backfilled, material stated m7 Core boxes, length of core stated nr

MEASUREMENT RULES DEFINITION RULES COVERAGE RULES ADDITIONAL DESCRIPTIONRULES

C1 Items for ground investigationshall be deemed to includepreparation and submission ofrecords and results.

C2 Items for ground investigationshall be deemed to includedisposal of excavated material andremoval of dead services.

A1 Item descriptions for thenumber and depth of trial pitsand trenches shall state theminimum plan area at thebottom of the pit or trench or,where the work is undertakento locate services, the maximumlength of the trench.

A2 Item descriptions for thenumber and depth of trial pitsand trenches (B 1 1–4 �) shallidentify separately those whichare expressly required to beexcavated by hand.

A3 Item descriptions forpumping shall state any specialde-watering methods which areexpressly required.

A4 Item descriptions for thenumber and depth of light cablepercussion boreholes shall statethe nominal diameter of thebases of the boreholes.

C3 Items for the depth of lightcable percussion boreholes shallbe deemed to include casings.

M1 Chiselling to prove rock or topenetrate obstructions shall bemeasured only where it isexpressly required.

D1 Rotary drilled boreholes shallbe classified as such whether theboring is carried out by a rig orby an attachment.

D2 Core boxes shall be deemedto become the property of theEmployer unless otherwisestated.

D3 The maximum depth usedfor classification of rotary drilledboreholes which arecontinuations of light cablepercussion boreholes shall bemeasured from the CommencingSurface of the light cablepercussion borehole.

A5 Item descriptions for rotarydrilled boreholes shall state thenominal minimum corediameter.

A6 Item descriptions for thenumber of rotary drilledboreholes shall state thosewhich are continuations of lightcable percussion boreholes.

A7 Item descriptions for rotarydrilled boreholes which areinclined shall state the angle ofinclination.

19

CLASS B

20

CLASS B

FIRST DIVISION SECOND DIVISION THIRD DIVISION

4 Samples nr 1 From the surface or from trial pitsand trenches

1 Undisturbed soft material2 Disturbed soft material3 Rock4 Groundwater

2 From boreholes 1 Open tube2 Disturbed3 Groundwater4 Stationary piston5 Swedish foil6 Delft7 Bishop sand

5 Site tests and observations 1 1 Permeability h

2 Groundwater level nr

3 Standard penetration nr

4 Penetration vane nr5 Vane in borehole nr6 Pressure meter nr

2 1 Plate bearing nr

2 Self-boring pressure meter nr3 California bearing ratio nr

4 Static cone sounding nr

5 In situ density nr6 Mackintosh probe nr

7 Hand auger borehole nr

6 Instrumental observations 1 Pressure head 1 Standpipes m2 Piezometers m3 Install covers nr4 Readings nr

2 Inclinometers 1 Installations m4 Readings nr

3 Settlement gauges4 Resistivity5 Seismic6 Magnetometer7 Self-potential8 Gravimetric

1 Installations nr4 Readings nr

MEASUREMENT RULES DEFINITION RULES COVERAGE RULES ADDITIONAL DESCRIPTIONRULES

A8 Item descriptions for samplesshall state their size, type andclass.

A9 Item descriptions forpermeability tests shall state thetype and give particulars of thetests.

A10 Item descriptions forgroundwater level observationsshall state when themeasurements are to be taken.

A11 Item descriptions forstandard penetration tests shallstate whether they are in lightcable percussion boreholes orrotary drilled boreholes.

A12 Item descriptions for platebearing tests shall state whetherthey are in pits and trenches orboreholes or at the surface.

A13 Item descriptions for staticcone sounding tests shall statethe maximum depth of the coneand, where electric cones areused, the maximum capacity ofthe machine.

A14 Item descriptions for handauger borehole tests andobservations shall state theminimum diameter and themaximum depth of theboreholes.

A15 Item descriptions forinstrumental observations shallstate details of the type ofobservations and the type ofprotective fences.

A16 Item descriptions forinclinometers and settlementgauges shall state whether theinstruments are in specialboreholes.

C4 Items for inclinometers andsettlement gauges shall bedeemed to include provision ofspecial boreholes.

21

CLASS B

22

CLASS B

FIRST DIVISION SECOND DIVISION THIRD DIVISION

7 Laboratory tests nr 1 Classification 1 Moisture content2 Atterberg limits3 Specific gravity4 Particle size analysis by sieve5 Particle size analysis by pipette or

hydrometer6 Frost susceptibility

2 Chemical content 1 Organic matter2 Sulphate3 pH value4 Contaminants

3 Compaction 1 Standard2 Heavy3 Vibratory

4 Consolidation 1 Oedometer cell2 Triaxial cell3 Rowe cell

5 Permeability 1 Constant head2 Falling head

6 Soil strength 1 Quick undrained triaxial2 Consolidated undrained triaxial,

with pore water pressuremeasurement

3 Consolidated drained triaxial,with volume changemeasurement

4 Shearbox: peak only5 peak and residual6 residual only7 ring shear8 California bearing ratio

7 Rock strength 1 Unconfined compressive strengthof core samples

2 Consolidated drained triaxial,with volume changemeasurement

3 Brazilian4 Ring shear5 Point load

MEASUREMENT RULES DEFINITION RULES COVERAGE RULES ADDITIONAL DESCRIPTIONRULES

A17 Item descriptions for testsfor contaminants shall state thestandards required and thecontaminants to be analysed.

A18 Item descriptions for triaxialcell and Rowe cell tests shallstate the number of incrementsand the effective pressures.

A19 Item descriptions for quickundrained triaxial tests shallstate the diameter and whethera single, multistage or set ofthree specimens is required.

A20 Item descriptions forconsolidated triaxial tests shallstate the diameter and theeffective pressures. Multistagetests shall be identified in itemdescriptions.

A21 Item descriptions forshearbox tests shall state thenormal pressures and the size ofthe shearbox.

A22 Item descriptions forCalifornia bearing ratio testsshall state the compactive effort,surcharge and whether soakingis required.

A23 Item descriptions forunconfined compressivestrength tests shall state thediameter and the height of thesamples.

A24 Item descriptions forconsolidated drained triaxialtests shall state the diameterand the height of the samplesand the effective pressure.

A25 Item descriptions forBrazilian tests shall state thediameter and the length of thesamples.

A26 Item descriptions for ringshear tests shall state the normalpressure and the diameter ofthe samples.

A27 Item descriptions for pointload tests shall state the type oftest required and the minimumdimensions of the samples.

23

CLASS B

24

CLASS B

FIRST DIVISION SECOND DIVISION THIRD DIVISION

8 Professional services 1 Technician h2 Technician engineer h

3 Engineer or geologist h 1 Graduate2 Chartered3 Principal or consultant

4 Visits to the Site nr5 Overnight stays in connection

with visits to the Site nr

MEASUREMENT RULES DEFINITION RULES COVERAGE RULES ADDITIONAL DESCRIPTIONRULES

M2 Professional services shall bemeasured only where they areexpressly required for analysis ofrecords and results.

M3 The hours measured shall beworking hours and shall excludehours occupied in travel, meals,etc.

C5 Items for professional servicesshall be deemed to includepreparation and submission ofreports and keeping records oftime spent.

C6 Items for visits to the Site andovernight stays in connection withvisits to the Site shall be deemedto include travelling, meals,accommodation and otherincidental expenses.

25

CLASS B

26

CLASS C: GEOTECHNICAL AND OTHER SPECIALIST PROCESSES

Includes: Geotechnical processes for altering the properties of soils and rocksOther specialist processes as listed

Excludes: Compaction (included in class E)Grouting carried out from within tunnels, shafts and other subterranean cavities (included in class T)Grouting carried out from within sewers (included in class Y)

FIRST DIVISION SECOND DIVISION THIRD DIVISION

1 Drilling for grout holes through material other thanrock or artificial hard material

2 Drilling for grout holes through rock or artificial hardmaterial

3 Driving injection pipes for grout holes

1 Vertically downwards2 Downwards at an angle 08–458 to

the vertical3 Horizontally or downwards at an

angle less than 458 to the horizontal4 Upwards at an angle 08–458 to the

horizontal5 Upwards at an angle less than 458 to

the vertical

1 In holes of depth:not exceeding 5 m m

2 5–10 m m3 10–20 m m4 20–30 m m5 30–40 m m6 stated exceeding 40 m m

4 Grout holes materials and injection 1 Number of holes nr2 Number of stages nr3 Single water pressure tests nr4 Multiple water pressure tests nr5 Materials t

1 Cement2 Pulverized fuel ash3 Sand4 Pea gravel5 Bentonite6 Chemicals

6 Injection 1 Number of injections nr2 Neat cement grout t3 Cement and stated filler grout t4 Chemical grout t5 Other stated grout t6 Single packer settings nr7 Double packer settings nr

5 Diaphragm walls 1 Excavation in material other thanrock or artificial hard material m3

2 Excavation in rock m3

3 Excavation in artificial hardmaterial m3

1 Maximum depth:not exceeding 5 m

2 5–10 m3 10–15 m4 15–20 m5 20–25 m6 25–30 m7 stated exceeding

30 m

4 Concrete m3

5 Plain round steel bar reinforcement t6 Deformed high yield steel bar

reinforcement t

1 Nominal size: 6 mm2 8 mm3 10 mm4 12 mm5 16 mm6 20 mm7 25 mm8 32 mm or greater

7 Waterproofed joints sum8 Guide walls m

MEASUREMENT RULES DEFINITION RULES COVERAGE RULES ADDITIONAL DESCRIPTIONRULES

M1 The Commencing Surfaceadopted in the preparation ofthe Bill of Quantities shall beadopted for the measurement ofthe completed work.

M2 The depths of grout holes,holes for ground reinforcementand drains shall be measuredalong the holes irrespective ofinclination.

D1 Drilling and excavation forwork in this class shall bedeemed to be in material otherthan rock or artificial hardmaterial unless otherwise statedin item descriptions.

C1 Items for work in this classshall be deemed to includedisposal of excavated material andremoval of dead services.

M3 Drilling through previouslygrouted holes in the course ofstage grouting shall not bemeasured. Where holes areexpressly required to beextended, the number of holesshall be measured and drillingthrough previously grouted holesshall be measured as drillingthrough rock or artificial hardmaterial.

A1 The diameters of holes shallbe stated in item descriptionsfor drilling and driving for groutholes and grout holes.

M4 The number of stagesmeasured shall be the totalnumber of grouting stagesexpressly required.

M5 The mass of grout materialsmeasured shall not include themass of mixing water.

A2 The type of materials shallbe stated in item descriptionsfor grout materials.

M6 The number of injectionsmeasured shall be the totalnumber of injections expresslyrequired.

M7 The mass of grout injectionmeasured shall not include themass of mixing water.

A3 Item descriptions for thenumber of injections shallidentify those which are instages distinguishing betweenthose which are in ascendingand descending stages.

M8 Formwork for voids, rebatesand fillets in diaphragm wallsshall be classed as concreteancillaries (class G).

M9 The depths of concrete indiaphragm walls shall bemeasured from the cut-off levelsexpressly required. The volumeof concrete shall be calculated asset out in rules M1 and M2 inclass F.

M10 The mass measured forreinforcement in diaphragmwalls shall include that ofstiffening, lifting and supportingsteel cast in.

M11 The mass of steelreinforcement shall be taken as0.785 kg/m per 100 mm2 ofcross-section (7.85 t/m3). Themass of other reinforcingmaterials shall be taken as statedin the Contract.

M12 Guide walls shall bemeasured each side of thediaphragm wall.

D2 Diaphragm walls are wallsconstructed using bentoniteslurry or other support fluids.

D3 The nominal size stated initem descriptions for barreinforcement in diaphragmwalls shall be the cross-sectionalsize.

C2 Items for excavation fordiaphragm walls shall be deemedto include preparation andupholding sides of excavation.

C3 Items for concrete indiaphragm walls shall be deemedto include trimming the faces ofdiaphragm walls and preparingtheir tops to receive other work.

C4 Items for reinforcement indiaphragm walls shall be deemedto include supportingreinforcement and preparingprotruding reinforcement toreceive other work.

A4 The thicknesses ofdiaphragm walls shall be statedin item descriptions forexcavation and concrete fordiaphragm walls.

A5 The nature of the materialshall be stated in itemdescriptions for excavation inartificial hard material.

A6 The mix specifications orstrengths shall be stated in itemdescriptions for concrete indiaphragm walls.

27

CLASS C

28

CLASS C

FIRST DIVISION SECOND DIVISION THIRD DIVISION

6 Ground reinforcement 1 Number in material other than rockor artificial hard material to a statedmaximum depth nr

2 Total length of tendons in materialother than rock or artificial hardmaterial m

3 Number in material which includesrock or artificial hard material to astated maximum depth nr

4 Total length of tendons in materialwhich includes rock or artificial hardmaterial m

1 Temporary2 Temporary with single corrosion

protection3 Temporary with double corrosion

protection4 Permanent5 Permanent with single corrosion

protection6 Permanent with double corrosion

protection

7 Sand, band and wick drains 1 Number of drains nr2 Number of predrilled holes nr3 Depth of overlying material m4 Depth of drains of maximum

depth: not exceeding 10 m m5 10–15 m m6 15–20 m m7 20–25 m m8 stated exceeding 25 m m

1 Cross-sectional dimension:not exceeding 100 mm

2 100–200 mm3 200–300 mm4 300–400 mm5 400–500 mm6 stated exceeding 500 mm

8 Vibro floation 1 Number of probes nr2 Depth of probe

1 Depth not exceeding 5 m m2 Depth: 5–10 m m3 Depth: 10–20 m m4 Depth: 20–30 m m5 Depth: 30–40 m m6 Depth: stated exceeding 40 m m

MEASUREMENT RULES DEFINITION RULES COVERAGE RULES ADDITIONAL DESCRIPTIONRULES

M13 The lengths of tendons forground anchorages shall bemeasured between the outerends of anchorages

D4 Ground anchorages and soilnailing shall be classed as groundreinforcement.

A7 The composition, locationand working load and details ofwater and grout testing,pregrouting and grouting shallbe stated in item descriptionsfor ground anchorages.

A8 The composition, locationand details of testing shall bestated in item descriptions forsoil mailing.

M14 The number of predrilledholes measured for sand, bandand wick drains shall be thenumber expressly required to bepredrilled through overlyingmaterial.

A9 Sand drains, band drains andwick drains shall be separatelyidentified in item descriptionsand the materials of which theyare composed stated.

29

CLASS C

30

CLASS D: DEMOLITION AND SITE CLEARANCE

Includes: Demolition and removal of natural and artificial articles, objects and obstructions which are above the OriginalSurface

Excludes: Removal of articles, objects, obstructions and materials (other than tree roots) at or below the Original Surface(included in classes C, E, I, J, K, L, R, T, X and Y)

FIRST DIVISION SECOND DIVISION THIRD DIVISION

1 Site clearance 1 General clearance ha2 Invasive plant species m2

2 Trees nr 1 Girth: 500 mm–2 m2 exceeding 2 m

3 Stumps nr 1 Diameter: less than 1 m2 exceeding 1 m

4 Buildings sum5 Other structures sum

1 Brickwork2 Concrete3 Masonry4 Metal5 Timber6 No predominant material

1 Volume: not exceeding 50 m3

2 50–100 m3

3 100–250 m3

4 250–500 m3

5 500–1000 m3

6 1000–2500 m3

7 2500–5000 m3

8 stated exceeding5000 m3

6 Pipelines m 1 Nominal bore: 100–300 mm2 300–500 mm3 exceeding 500 mm

MEASUREMENT RULES DEFINITION RULES COVERAGE RULES ADDITIONAL DESCRIPTIONRULES

C1 Items for demolition and siteclearance shall be deemed toinclude disposal of the materialsarising.

A1 Item descriptions for workfrom which the materials arisingremain the property of theEmployer shall so state.

D1 General clearance shallinclude the demolition andremoval of all articles, objectsand obstructions which areexpressly required to be cleared,except those for which separateitems are given as set out in thisclass.

D2 Invasive plant species shallinclude any plant whose controlis governed by legislation andwhich is treated by herbicidal orchemical process.

C2 Items for general clearancewhich include the removal ofhedges shall be deemed to includethe removal of hedge stumps ofany diameter where these are alsorequired to be removed.

C3 Items for invasive plant speciesshall include for the disposal ofany vegetable matter remainingafter treatment.

A2 Item descriptions for generalclearance shall identify the areaincluded unless it is the totalarea of the Site.

A3 Item descriptions for invasiveplant species shall state themethod of treatment and typeof vegetation.

A4 Where holes left by stumpremoval are to be backfilled,item descriptions for generalclearance, trees and stumpsshall state the nature of thebackfilling material.D3 Girths of trees shall be

measured 1 m above groundlevel.

C4 Items for clearance of treesshall be deemed to includeremoval of the stumps where theyare also required to be removed.

D4 The volume used in theclassification of buildings andother structures shall be theirapproximate volume occupied,excluding any volume below theOriginal Surface.

A5 Buildings and otherstructures shall be identified initem descriptions.

M1 Pipelines within buildingsand other structures shall bemeasured only where theirnominal bore exceeds 300 mm.

C5 Items for demolition ofpipelines shall be deemed toinclude demolition and removal ofsupports.

31

CLASS D

32

CLASS E: EARTHWORKS

Includes: Excavation, dredging, filling, compaction, disposal and landscapingExcludes: Excavation for:

ground investigation (included in class B)diaphragm walls and ground anchorages (included in class C)pipes and sewers, manholes, trenches and ditches, pipe headings, thrust boring and pipe jacking, and pipe jointing(included in classes I, J, K, L and Y)piles (included in classes P and Q)foundations for traffic signs (included in class R)tunnels, shafts, headings and other subterranean cavities (included in class T)foundations for fences and gates (included in class X)

Reinstatement following pipe laying (included in class K)

FIRST DIVISION SECOND DIVISION THIRD DIVISION

1 Excavation by dredging m3

2 Excavation for cuttings m31 Topsoil2 Material other than topsoil, rock or

artificial hard material3 Rock4 Stated artificial hard material exposed

at the Commencing Surface5 Stated artificial hard material not

exposed at the Commencing Surface6 Controlled and hazardous material

exposed at the Commencing Surface7 Controlled and hazardous material

not exposed at the CommencingSurface

3 Excavation for foundations m3

4 General excavation m31 Maximum depth:

not exceeding 0.25 m2 0.25–0.5 m3 0.5–1 m4 1–2 m5 2–5 m6 5–10 m7 10–15 m8 stated exceeding 15 m

MEASUREMENT RULES DEFINITION RULES COVERAGE RULES ADDITIONAL DESCRIPTIONRULES

M1 In accordance withparagraph 5.18 the quantities ofearthworks shall be computednet using dimensions from theDrawings with no allowance forbulking, shrinkage or waste.Where boundaries betweendifferent materials are notshown on the Drawings,measurement shall be made onthe Site.

M2 The Commencing Surfaceadopted in the preparation ofthe Bill of Quantities shall beadopted for the measurement ofthe completed work.

M3 Excavation classed as bydredging in the Bill of Quantitiesshall be measured as bydredging irrespective of themethod of excavation adoptedby the Contractor.

M4 Measurement of excavationby dredging shall be made fromsoundings unless otherwisestated.

M5 An item shall be given foreach separate stage ofexcavation where separatestages in the conduct of theWorks are expressly required.

M6 The volume measured forthe excavation of a structure orfoundation shall be the volumewhich is to be either occupied byor vertically above any part ofthe structure or foundation.

M7 The volume measured forexcavation below a body ofopen water shall be the volumebelow water when the watersurface is at the level (or thehigher level of fluctuation ifapplicable) shown on thedrawing to which reference isgiven in the Preamble inaccordance with paragraph 5.20.

M8 An isolated volume ofartificial hard material or rockoccurring within other materialto be excavated shall not bemeasured separately unless itsvolume exceeds 1 m3 exceptthat the minimum volume shallbe 0.25 m3 where the net widthof excavation is less than 2 m.

M9 The volume measured forexcavation within borrow pitsshall be the net volumemeasured for filling.

D1 Excavated material shall bedeemed to be material otherthan topsoil, rock or artificialhard material unless otherwisestated in item descriptions.

D2 Excavation in or under anembankment, executed prior toplacing of fill, shall be classed asexcavation for cuttings.

D3 Excavation from withinborrow pits shall be classed asgeneral excavation.

D4 Controlled and hazardousmaterials shall include anymaterial whose excavation anddisposal is governed bylegislation including invasiveplant species.

C1 Items for excavation shall bedeemed to include upholdingsides of excavation, additionalexcavation to provide workingspace and removal of deadservices.

C2 Item descriptions forexcavation shall be deemed toinclude removal of existing pipesof any material or diameter.

C3 Items for excavation withinborrow pits shall be deemed toinclude removal and replacementof overburden and unsuitablematerial.

A1 The location and limits ofexcavation by dredging shall bestated in item descriptionswhere its extent wouldotherwise be uncertain.

A2 Item descriptions forexcavation below a body ofopen water identified in thePreamble in accordance withparagraph 5.20 shall identify thebody of water.

A3 The location and limits ofexcavation for foundations shallbe stated in item descriptionswhere the limits wouldotherwise be uncertain.Excavation around pile shaftsand for underpinning shall eachbe so described and classed asexcavation for foundations.

A4 The Commencing Surfaceshall be identified in thedescription of each item forwork involving excavation forwhich the Commencing Surfaceis not the Original Surface. TheExcavated Surface shall beidentified in the description ofeach item for work involvingexcavation for which theExcavated Surface is not theFinal Surface.

A5 Item descriptions forexcavation within borrow pitsshall so state.

A6 Item descriptions shallidentify separately excavationwhich is expressly required to becarried out by hand.

A7 Item descriptions forcontrolled and hazardousmaterials shall state the natureof the material.

33

CLASS E

34

CLASS E

FIRST DIVISION SECOND DIVISION THIRD DIVISION

5 Excavation ancillaries 1 Trimming of excavated surfaces m2

2 Preparation of excavated surfaces m2

3 Disposal of excavated material m3

4 Double handling of excavatedmaterial m3

1 Topsoil2 Material other than topsoil, rock

or artificial hard material3 Rock4 Stated artificial hard material5 Controlled and hazardous

materials

5 Dredging to remove silt m3

6 Excavation of material below theFinal Surface and replacementwith stated material m3

7 Timber supports left in m2

8 Metal supports left in m2

MEASUREMENT RULES DEFINITION RULES COVERAGE RULES ADDITIONAL DESCRIPTIONRULES

M10 Trimming of excavatedsurfaces shall be measured tosurfaces which are to receive noPermanent Works whethertrimming is expressly required ornot.

M11 Preparation of excavatedsurfaces shall be measured tosurfaces which are to receivePermanent Works whetherpreparation is expressly requiredor not except surfaces which areto receive filling or landscapingand surfaces for whichformwork is measured.

M12 The volume of disposal ofexcavated material measuredshall be the difference betweenthe total net volume ofexcavation and the net volumeof excavated material used forfilling.

M13 Double handling ofexcavated material shall bemeasured only to the extent thatit is expressly required. Thevolume measured for doublehandling shall be that of the voidformed in the temporarystockpile from which thematerial is removed.

M14 Dredging to remove siltshall be measured only to theextent that it is expresslyrequired that silt whichaccumulates after the FinalSurface has been reached shallbe removed.

M15 The area measured fortimber or metal supports left inshall be the area of supportedsurfaces for which the supportsare expressly required to be leftin.

D5 Disposal of excavatedmaterial shall be deemed to bedisposal off the Site unlessotherwise stated in itemdescriptions.

D6 Trimming, preparation,disposal and double handlingshall be deemed to be carriedout upon material other thantopsoil, rock or artificial hardmaterial unless otherwise statedin item descriptions.

A8 Item descriptions forexcavation ancillaries inconnection with excavation bydredging shall be so described.

A9 Item descriptions fortrimming of excavated surfacesand preparation of excavatedsurfaces shall identify surfaceswhich are:

(a) inclined at an angle of108–458 to the horizontal

(b) inclined at an angle of458–908 to the horizontal

(c) vertical.

A10 Where material is fordisposal on the Site the locationof the disposal areas shall bestated in item descriptions fordisposal of excavated material.

A11 Item descriptions fordisposal of controlled andhazardous materials shall statethe nature of the material.

35

CLASS E

36

CLASS E

FIRST DIVISION SECOND DIVISION THIRD DIVISION

6 Filling 1 To structures m3

2 Embankments m3

3 General m3

4 To stated depth or thickness m2

1 Excavated topsoil2 Imported topsoil3 Non-selected excavated material

other than topsoil or rock4 Selected excavated material other

than topsoil or rock5 Imported natural material other

than topsoil or rock6 Excavated rock7 Imported rock8 Imported artificial material

1 High energy impact compactiongeneral fill

1 Selected excavated materialother than topsoil or rock m3

2 Imported natural materialother than topsoil or rock m3

3 Existing ground m2

7 Filling ancillaries 1 Trimming of filled surfaces m2

2 Preparation of filled surfaces m21 Topsoil2 Material other than topsoil, rock

or artificial hard material3 Rock4 Stated artificial hard material

3 Geotextiles m2

8 Landscaping 1 Turfing m2

2 Hydraulic mulch grass seeding m2

3 Other grass seeding m2

4 Plants, stated species and size nr5 Shrubs, stated species and size nr6 Trees, stated species and size nr

7 Hedges, stated species, size andspacing m

1 Single row2 Double row

MEASUREMENT RULES DEFINITION RULES COVERAGE RULES ADDITIONAL DESCRIPTIONRULES

M16 Filling of excavationsaround completed structuresshall be measured only to theextent that the volume filled isalso measured as excavation inaccordance with rule M6.

M17 Where filling to formtemporary roads is subsequentlyapproved by the contractadministrator for incorporationinto permanent filling thevolume placed shall not bededucted from the measurementof filling.

M18 Additional fillingnecessitated by settlement of orpenetration into underlyingmaterial shall be measured onlyto the extent that its depthexceeds 75 mm.

M19 The volume of importedfilling material measured shall bethe difference between the netvolume of filling and the netvolume of excavated materialderived from work within classesE and T used for filling.

M20 Where rock filling isdeposited into soft areas thevolume shall be measured in thetransport vehicles at the place ofdeposition.

M21 Where filling is to bedeposited below water, and thequantity cannot be measuredsatisfactorily by any othermeans, its volume shall bemeasured in the transportvehicles at the place ofdeposition.

D7 Filling material shall bedeemed to be non-selectedexcavated material other thantopsoil or rock, unless otherwisestated in item descriptions.

D8 Filling material shall beclassed as excavated rock onlywhere the use of rock as fillingat stated locations is expresslyrequired.

D9 Filling shall be classed as tostated depth or thickness wherematerial is provided of uniformtotal compacted depth orthickness such as in drainageblankets, topsoiling, pitching andbeaching. Bulk filling shall not beclassed as to stated depth orthickness notwithstanding that itmay be compacted in separatelayers of material of statedthickness.

C4 Items for filling shall bedeemed to include compaction.

A12 The materials shall beidentified in item descriptionsfor filling with importedmaterial.

A13 Where differentcompaction requirements arespecified for the same fillingmaterial they shall be stated initem descriptions for filling.

A14 Where the rate ofdeposition of filling material islimited the limitation shall bestated in item descriptions forfilling.

A15 The materials shall beidentified in item descriptionsfor filling to stated depth orthickness.

A16 Item descriptions for fillingto stated depth or thicknessshall identify work uponsurfaces which are:

(a) inclined at an angle of108–458 to the horizontal

(b) inclined at an angle of458–908 to the horizontal

(c) vertical.

A17 Item descriptions for highenergy impact compaction shallstate the type of compaction.

M22 High energy impactcompaction general fill existingground shall be measured to thesurface area to be treated

M23 Trimming of filled surfacesshall be measured to surfaceswhich are to receive noPermanent Works whethertrimming is expressly required ornot.

M24 Preparation of filledsurfaces shall be measured tosurfaces which are to receivePermanent Works whetherpreparation is expressly requiredor not except surfaces which areto receive filling or landscapingand surfaces for whichformwork is measured.

D10 Trimming and preparationshall be deemed to be carriedout upon material other thantopsoil, rock or artificial hardmaterial unless otherwise statedin item descriptions.

A18 Item descriptions for filingancillaries shall identify workupon surfaces which are:

(a) inclined at an angle of108–458 to the horizontal

(b) inclined at an angle of458–908 to the horizontal

(c) vertical.

A19 The type and grade ofmaterial shall be stated in itemdescriptions for geotextiles.

M25 The area of additionalgeotextiles in laps shall not bemeasured.

M26 The lengths of hedgesmeasured shall be theirdeveloped lengths along centrelines.

C5 Items for landscaping shall bedeemed to include fertilizing,trimming and preparation ofsurfaces

A20 Where turfing is pegged orwired item descriptions shall sostate.

A21 Item descriptions for turfingand grass seeding shall identifywork upon surfaces which areinclined at an angle exceeding108 to the horizontal.

37

CLASS E

38

CLASS F: IN SITU CONCRETE

Excludes: In situ concrete for:capping of boreholes (included in class B)diaphragm walls (included in class C)excavation ancillaries (included in class E)granolithic and other applied finishes (included in class G)drainage and pipework (included in classes K and L)piles (included in classes P and Q)roads, pavings and kerbs (included in class R)tunnel and shaft linings (included in class T)foundations for fences and gates (included in class X)

FIRST DIVISION SECOND DIVISION THIRD DIVISION

Provision of concrete1 Designed concrete m3 1 Strength C8/10

2 C12/153 C16/204 C20/255 C25/306 C28/357 C30/378 C32/40

1 Maximum aggregate size10 mm

2 20 mm3 40 mm

Provision of concrete2 Designated concrete m3 1 Strength RC20/25

2 RC25/303 RC28/354 RC30/375 RC32/406 RC35/407 RC40/50

Provision of concrete3 Standardised prescribed concrete m3 1 ST1

2 ST23 ST34 ST45 ST5

Provision of concrete4 Prescribed mix m3

Provision of concrete5 Proprietary concrete m3

MEASUREMENT RULES DEFINITION RULES COVERAGE RULES ADDITIONAL DESCRIPTIONRULES

M1 The volume of concretemeasured shall include thatoccupied by(a) reinforcement and other metal

sections(b) prestressing components(c) cast-in components each not

exceeding 0.1 m3 in volume(d) rebates, grooves, throats, fillets,

chamfers or internal splays eachnot exceeding 0.01 m2 in cross-sectional area

(e) pockets and holes which aredefined as large or small voids inaccordance with rule D3 ofclass G

(f ) joints or joint componentsbetween adjacent volumes of insitu concrete.

M2 The volume of concretemeasured shall exclude that of nibsor external splays each notexceeding 0.01 m2 in cross-sectionalarea.

D1 Items for the provision ofconcrete shall be classified inaccordance with BS 8500 and(November 2006) BS EN 206-1.

D2 Concrete shall be classed asDesigned concrete where thedesigner is responsible for ensuringthe requirements for the concreteare in accordance with theStandards.

A1 The specification of concrete inaccordance with BS 8500 shall bestated in the item description forProvision of concrete unless theconcrete reference is stated forwhich the specification is givenelsewhere in the Contract.A2 Where BS 8500 is not used thespecification or item descriptionshall state the details of theconcrete to be provided.

D3 Concrete shall be classed asDesignated concrete where thedesign of the concrete is generatedby the concrete producer.

A3 The specified design exposureconditions shall be stated in theitem description for Provision ofconcrete unless the concretereference is stated for which thespecification is given elsewhere inthe Contract.

D4 Concrete shall be classed asStandard prescribed concrete whereit is limited to simple structural nonreinforced applications

A4 Any specified requirements foradmixtures shall be stated in theitem description for Provision ofconcrete unless the concretereference is stated for which thespecification is given elsewhere inthe Contract.

D5 Concrete shall be classed asPrescribed concrete where thedesigner provides full details of theconcrete such that it will produceconcrete that will achieve therequired performance.

A5 Any specified requirements for‘Consistence categories’ shall bestated in the item description forProvision of concrete unless theconcrete reference is stated forwhich the specification is givenelsewhere in the Contract.A6 Any specified requirements for‘Maximum water to cement ratios’shall be stated in the itemdescription for Provision of concreteunless the concrete reference isstated for which the specification isgiven elsewhere in the Contract.A7 Any specified requirements for‘Minimum cement content kg/m3’shall be stated in the itemdescription for Provision of concreteunless the concrete reference isstated for which the specification isgiven elsewhere in the Contract.

D6 Concrete shall be classed asProprietary concrete where theapplication is to achieve a particularperformance outside normalperformance criteria.

39

CLASS F

40

CLASS F

FIRST DIVISION SECOND DIVISION THIRD DIVISION

Placing of concrete6 Mass m3

7 Reinforced m3

8 Prestressed m3

1 Blinding2 Bases, footings, pile caps and ground

slabs3 Suspended slabs4 Walls

1 Thickness: not exceeding 150 mm2 150–300 mm3 300–500 mm4 exceeding 500 mm

5 Columns and piers6 Beams7 Casing to metal sections

1 Cross-sectional area: not exceeding0.03 m2

2 0.03–0.1 m2

3 0.1–0.25 m2

4 0.25–1 m2

5 exceeding 1 m2

6 Special beam sections

8 Other concrete forms

NOTE

In accordance with paragraph 5.10 the location of concrete members in the Works may be stated in item descriptions for placing of concrete wherespecial characteristics may affect the method and rate of placing concrete.

MEASUREMENT RULES DEFINITION RULES COVERAGE RULES ADDITIONAL DESCRIPTIONRULES

M3 Columns and piers integral witha wall shall be measured as part ofthe wall, except where expresslyrequired to be cast separately.

M4 Beams integral with a slab shallbe measured as part of the slab,except where expressly required tobe cast separately.

D7 Prestressed concrete which isalso reinforced shall be classed asprestressed concrete.

D8 The thickness used forclassification of blinding shall be theminimum thickness.

D9 The thickness used forclassification of ground slabs,suspended slabs and walls shallexclude the additional thickness ofintegral beams, columns, piers andother projections.

D10 Concrete in suspended slabsand walls less than 1 m wide orlong shall be classed as concrete inbeams and columns respectively.

D11 Beams shall be classed asspecial beam sections where theircross-section profiles are rectangularor approximately rectangular overless than 4/5 of their length orwhere they are of box or othercomposite section.

D12 Sprayed concrete shall bedesignated as other concrete forms.

D13 Reinforcing materials added tothe mix for sprayed concrete shallnot be classed as reinforcement.

A8 Item descriptions for placing ofconcrete which is expressly requiredto be placed against an excavatedsurface (other than blinding) shallso state.

A9 The cross-sectional dimensionsof special beam sections shall bestated in item descriptions, exceptwhere a beam type or marknumber is stated for whichdimensions are given on thedrawings.

A10 Item descriptions forcomponents classed as otherconcrete forms shall identify thework and include one of thefollowing:

(a) the principal dimensions(b) a type or mark number for

which principal dimensions aregiven on the drawings

(c) a statement locating the workfor which principal dimensionsare given on the drawings.

A11 Item descriptions for sprayedconcrete support shall state thespecification of the concrete andwhether it is reinforced and theminimum thickness.

41

CLASS F

42

CLASS G: CONCRETE ANCILLARIES

Includes: Formwork for in situ concreteReinforcement for in situ concreteJoints in in situ concretePost-tensioned prestressingAccessories for in situ concrete

FIRST DIVISION SECOND DIVISION THIRD DIVISION

1 Formwork: rough finish2 Fair finish3 Other stated finish4 Stated surface features

1 Plane horizontal2 Plane sloping3 Plane battered4 Plane vertical5 Curved to one radius in one plane

1 Width: not exceeding 0.1 m m2 0.1–0.2 m m3 0.2–0.4 m m2

4 0.4–1.22 m m2

5 exceeding 1.22 m m2

6 Other curved m2

7 For voids nr 1 Small void depth:not exceeding 0.5 m

2 0.5–1 m3 1–2 m4 stated exceeding 2 m5 Large void depth:

not exceeding 0.5 m6 0.5–1 m7 1–2 m8 stated exceeding 2 m

8 For concrete components ofconstant cross-section m

1 Beams2 Columns3 Walls4 Other members5 Projections6 Intrusions

5 Reinforcement 1 Plain round steel bars t2 Deformed high yield steel bars t3 Stainless steel bars of stated quality t4 Reinforcing bars of other stated

material t

1 Nominal size: 6 mm2 8 mm3 10 mm4 12 mm5 16 mm6 20 mm7 25 mm8 32 mm or greater

5 Special joints nr

6 Steel fabric m2

7 Fabric of other stated material m21 Nominal mass: not exceeding

2 kg/m2

2 2–3 kg/m2

3 3–4 kg/m2

4 4–5 kg/m2

5 5–6 kg/m2

6 6–7 kg/m2

7 7–8 kg/m2

8 stated exceeding8 kg/m2

Excludes: Reinforcement in diaphragm walls (included in class C)Pre-tensioned prestressing (included in class H)Formwork and reinforcement in precast concrete (included in class H)Formwork and reinforcement ancillary to drainage and pipework (included in classes K and L)Formwork and reinforcement in piles (included in classes P and Q)Formwork and reinforcement for concrete roads and pavings (included in class R)Formwork for tunnel and shaft linings (included in class T)Formwork for foundations for fences and gates (included in class X)

MEASUREMENT RULES DEFINITION RULES COVERAGE RULES ADDITIONAL DESCRIPTIONRULES

M1 Formwork shall be measuredfor surfaces of in situ concretewhich require temporary supportduring casting except whereotherwise stated in CESMM3.

M2 Formwork shall not bemeasured for the following:(a) edges of blinding concrete

not exceeding 0.2 m wide(b) joints and associated rebates

and grooves(c) temporary surfaces formed at

the discretion of theContractor

(d) surfaces of concrete whichare expressly required to becast against an excavatedsurface

(e) surfaces of concrete whichare cast against excavatedsurfaces inclined at an angleless than 458 to thehorizontal.

M3 Formwork to upper surfacesof concrete shall be measured tosurfaces inclined at an angleexceeding 158 to the horizontaland to other upper surfaces forwhich formwork is expresslyrequired.

M4 Formwork for the surfacesof voids larger than thoseclassed as large voids inaccordance with rule D3 shall bemeasured as set out in this classfor formwork generally.

M5 Formwork for the surfacesof projections and intrusionsexceeding 0.01 m2 in cross-sectional area shall be measuredas set out in this class forformwork generally.

M6 The area of formworkmeasured shall include the areaof formwork obscured by:(a) forms for large and small

voids(b) forms for projections and

intrusions(c) inserts

D1 Plane formwork shall beclassified according to its angleof inclination as follows:

D2 Formwork shall be deemedto be for plane areas and toexceed 1.22 m wide, unlessotherwise stated.

D3 The classification of largeand small voids shall be asfollows:

The depths of voids shall bemeasured perpendicularly to theadjacent surface of concrete.

D4 Nibs and external splays notexceeding 0.01 m2 in cross-sectional area shall be classed asprojections.

D5 Rebates, grooves, internalsplays, throats, fillets andchamfers not exceeding 0.01 m2

in cross-sectional area shall beclassed as intrusions.

A1 Formwork left in shall be sodescribed in item descriptionsfor formwork.

A2 Item descriptions forformwork which is to uppersurfaces shall so state, exceptwhere the surfaces are inclinedat an angle not exceeding 108to the vertical.

A3 Item descriptions forformwork shall state where theformwork is to blindingconcrete.

A4 Radii of curved formworkshall be stated in itemdescriptions as follows:(a) to one radius in one plane

(cylindrical), radius stated(b) to one radius in two planes

(spherical), radius stated(c) varying radius (conical),

maximum and minimumradii stated.

A5 Item descriptions forformwork for concretecomponents of constant cross-section, other than projectionsand intrusions, shall state theprincipal cross-sectionaldimensions of the componentand its mark number, locationor other unique identifyingfeature.

A6 Formwork for curvedconcrete components ofconstant cross-section shall beso described stating the radii.

M7 The mass of steelreinforcement shall be taken as0.785 kg/m per 100 mm2 ofcross-section (7.85 t/m3). Themass of other reinforcingmaterials shall be taken as statedin the Contract.

M8 The mass of reinforcementmeasured shall include the massof steel supports to topreinforcement.

M9 The area of additional fabricin laps shall not be measured.

D6 Welded, swaged or screwedsleeve joints in reinforcing barsshall be classed as special joints.

C1 Items for reinforcement shallbe deemed to include supportingreinforcement other than steelsupports to top reinforcement.

A7 Item descriptions for barreinforcement shall state thelengths of bars to the nexthigher multiple of 3 m wherethey exceed 12 m beforebending.

A8 Item descriptions for specialjoints shall state the type of jointand type and size of reinforcingbar.

A9 Item descriptions for steelfabric shall state the fabricreference size and mass or massper square metre.

A10 Item descriptions for fabricof other stated material shallstate the sizes and nominal massper square metre.

43

CLASS G

Class Angle ofinclination tothe vertical

HorizontalSlopingBatteredVertical

858–908108–85808–10808

Class Maximum cross-section

Circularvoids(diameter)

Other voids(area)

LargeSmall

0.35–0.7 mNotexceeding0.35 m

0.1–0.5 m2

Notexceeding0.1 m2

44

CLASS G

FIRST DIVISION SECOND DIVISION THIRD DIVISION

6 Joints 1 Open surface plain m2

2 Open surface with filler m2

3 Formed surface plain m2

4 Formed surface with filler m2

1 Average width: not exceeding0.5 m

2 0.5–1 m3 stated exceeding

1 m

5 Plastics or rubber waterstops m6 Metal waterstops m

1 Average width: not exceeding150 mm

2 150–200 mm3 200–300 mm4 stated exceeding

300 mm

7 Sealed rebates or grooves m

8 Dowels nr 1 Plain or greased2 Sleeved or capped

7 Post-tensioned prestressing nr 1 Horizontal internal tendons in in situconcrete

2 Inclined or vertical internal tendons inin situ concrete

3 Horizontal internal tendons in precastconcrete

4 Inclined or vertical internal tendons inprecast concrete

1 Length: not exceeding 5 m2 5–7 m3 7–10 m4 10–15 m5 15–20 m6 20–25 m7 25–30 m8 stated exceeding 30 m

5 External jacking operations

8 Concrete accessories 1 Finishing of top surfaces m2 1 Wood float2 Steel trowel3 Other stated surface treatment4 Granolithic finish5 Other stated applied finish

2 Finishing of formed surfaces m2 1 Aggregate exposure usingretarder

2 Bush hammering3 Other stated surface treatment

carried out after strikingformwork

3 Inserts 1 Linear inserts m2 Other inserts nr

4 Grouting under plates nr 1 Area: not exceeding 0.1 m2

2 0.1–0.5 m2

3 0.5–1 m2

4 stated exceeding 1 m2

NOTE

Similar inserts which vary in size may be added together and classified by size within ranges.

MEASUREMENT RULES DEFINITION RULES COVERAGE RULES ADDITIONAL DESCRIPTIONRULES

M10 Joints shall be measuredonly where they are at locationswhere joints are expresslyrequired.

M11 The widths of joints shallbe measured between the outersurfaces of concrete with nodeduction or addition for widthsor depths occupied by rebates,grooves, fillets or waterstops.The lengths of waterstops shallbe measured along their centrelines.

D7 Joints for which temporarysupport of the whole surfacearea of concrete is requiredduring casting shall be classed asformed surface joints. Otherjoints shall be classed as opensurface joints.

C2 Items for open surface andformed surface joints shall bedeemed to include intermediatesurface treatment where expresslyrequired.

C3 Items for joints shall bedeemed to include formwork.

C4 Items for waterstops shall bedeemed to include cutting andjoining of waterstops andprovision of special fittings atangles and junctions.

A11 The dimensions and natureof components shall be stated initem descriptions for joints.

M12 Prestressing shall bemeasured by the number oftendons where tendons are usedand by the number of externaljacking operations where stressis induced by jacking only.

D8 Profiled tendons in horizontalcomponents shall be classed ashorizontal tendons.

D9 The lengths of tendons usedfor classification shall be theirdeveloped lengths between theouter faces of anchorages.

C5 Items for prestressing shall bedeemed to include ducts, groutingand other components and tasksancillary to prestressing.

A12 Item descriptions forprestressing shall identify theconcrete component to bestressed and state thecomposition of the tendon andparticulars of the anchorage.

M13 Surface treatments shallnot be measured to surfacesformed at the Contractor’sdiscretion.

M14 The areas of tops of wallsand other surfaces which are notgiven separate finishingtreatment shall not be measuredas finishing of top surfaces.

M15 No deduction from theareas measured for finishingshall be made for holes andopenings in the finished surfaceseach not exceeding 0.5 m2.

C6 Items for granolithic and otherstated applied finish shall bedeemed to include materials,surface treatment, joints andformwork.

A13 The materials, thicknessesand surface treatments ofgranolithic and other statedapplied finish shall be stated initem descriptions.

M16 Where inserts are expresslyrequired to be grouted intopreformed openings theformwork shall be measured.

D10 Components cast orgrouted into in situ concreteexcept reinforcement,prestressing and jointingmaterials shall be classed asinserts.

C7 Items for inserts shall bedeemed to include their supplyunless otherwise stated.

A14 Item descriptions for insertsshall identify the components tobe cast or grouted in and statetheir principal dimensions.

A15 Item descriptions for insertsshall identify:

(a) those which project fromone surface of the concrete

(b) those which project fromtwo surfaces of the concrete

(c) those which are totallywithin the concrete volume.

A16 Where inserts are expresslyrequired to be grouted intopreformed openings in concreteitem descriptions shall so state.Materials for grouting and sizesof openings shall be stated.

A17 Materials shall be stated initem descriptions for groutingunder plates.

45

CLASS G

46

CLASS H: PRECAST CONCRETE

Includes: Manufacture, erection, joining and fixing of precast concrete unitsExcludes: Post-tensioned prestressing (included in class G)

Precast concrete pipework (included in classes I and J)Precast concrete manholes, catchpits and gullies (included in class K)Precast concrete piles (included in classes P and Q)Precast concrete paving, kerbs and traffic sign supports (included in class R)Precast concrete tunnel linings (included in class T)Precast concrete blockwork (included in class U)Precast concrete fencing (included in class X)

FIRST DIVISION SECOND DIVISION THIRD DIVISION

1 Beams nr2 Prestressed pre-tensioned beams nr3 Prestressed post-tensioned beams nr4 Columns nr

1 Length: not exceeding 5 m2 5–7 m3 7–10 m4 10–15 m5 15–20 m6 20–30 m7 exceeding 30 m

1 Mass: not exceeding 250 kg2 250–500 kg3 500 kg–1 t4 1–2 t5 2–5 t6 5–10 t7 10–20 t8 stated exceeding 20 t

5 Slabs nr 1 Area: not exceeding 1 m2

2 1–4 m2

3 4–15 m2

4 15–50 m2

5 exceeding 50 m2

6 Segmental units nr

7 Units for subways, culverts and ducts m

8 Copings, sills and weir blocks m 1 Cross-sectional area: not exceeding0.1 m2

2 0.1–0.5 m2

3 0.5–1 m2

4 exceeding 1 m2

MEASUREMENT RULES DEFINITION RULES COVERAGE RULES ADDITIONAL DESCRIPTIONRULES

D1 The mass used forclassification in the third divisionshall be the mass of each unit.

D2 Concrete components whichare cast other than in their finalposition shall generally beclassed as precast concrete units.

D3 Where site precasting ofunits is adopted for reasonsother than to obtain multiple useof formwork and the nature ofthe work is characteristic of insitu concrete, but involves themovement of the cast units intotheir final positions, the unitsshall be classed as in situconcrete and items given in classA for the Temporary Worksassociated with the movementof the units.

C1 Items for precast concrete shallbe deemed to includereinforcement, formwork, jointsand finishes.

A1 The position in the Worksand specification of the concreteto be used in each type ofprecast unit shall be stated initem descriptions.

A2 Item descriptions shall statethe mark or type number ofeach precast concrete unit. Unitswith different dimensions shallbe given different mark or typenumbers.

A3 Particulars of tendons andprestressing shall be stated initem descriptions for prestressedpre-tensioned units.

A4 The cross-section type andprincipal dimensions shall bestated in item descriptions forbeams, columns, segmentalunits, units for subways,culverts, ducts, copings, sills andweir blocks.

A5 The average thickness shallbe stated in item descriptionsfor slabs.

A6 The mass per metre shall bestated in item descriptions forunits for subways, culverts,ducts, copings, sills and weirblocks.

M1 The length measured forunits for subways, culverts andducts and for copings, sills andweir blocks shall be the totallength of identical units.

47

CLASS H

48

CLASS I: PIPEWORK – PIPES

Includes: Provision, laying and jointing of pipesExcavating and backfilling pipe trenches

Excludes: Work included in classes J, K, L and YPiped building services (included in class Z)

FIRST DIVISION SECOND DIVISION THIRD DIVISION

1 Clay pipes m2 Concrete pipes m3 Iron pipes m4 Steel pipes m5 Polyvinyl chloride pipes m6 Glass reinforced plastic pipes m7 High density polyethylene pipes m8 Medium density polyethylene pipes m

1 Nominal bore: not exceeding 200 mm2 200–300 mm3 300–600 mm4 600–900 mm5 900–1200 mm6 1200–1500 mm7 1500–1800 mm8 exceeding 1800 mm

1 Not in trenches2 In trenches, depth: not exceeding

1.5 m3 1.5–2 m4 2–2.5 m5 2.5–3 m6 3–3.5 m7 3.5–4 m8 exceeding 4 m

MEASUREMENT RULES DEFINITION RULES COVERAGE RULES ADDITIONAL DESCRIPTIONRULES

M1 The Commencing Surfaceadopted in the preparation ofthe Bill of Quantities shall beadopted for the measurement ofthe completed work.

M2 Backfilling of trenches shallnot be measured except as setout in class K for filling of Frenchand rubble drains and in class Lfor backfilling with materialother than that excavated fromthe trenches.

M3 Lengths of pipes shall bemeasured along their centrelines. Lengths of pipes intrenches shall include lengthsoccupied by fittings and valvesand exclude lengths occupied bypipes and fittings comprisingbackdrops to manholes. Lengthsof pipes not in trenches shallexclude lengths occupied byfittings and valves. Where morethan one pipe is expresslyrequired to be laid in one trench,the length measured shall be thelength of the pipe, not includingthe length occupied by manholesand other chambers.

M4 Additional items shall begiven in classes K and L for workin connection with pipes not intrenches other than theprovision, laying and jointing ofpipes.

M5 Lengths of pipes enteringmanholes and other chambersshall be measured to the insidesurfaces of the chambers exceptthat pipes and fittingscomprising backdrops tomanholes shall be included initems for manholes measured inclass K.

D1 Pipes not in trenches shallinclude pipes suspended orsupported above the ground orother surface, pipes in headings,tunnels or shafts, pipes installedby thrust boring and pipe jackingand pipes laid within volumesmeasured separately forexcavation.

D2 Pipes not in trenches shall beclassed as such only where pipesare expressly required not to belaid in trenches.

D3 Depths used for classificationof pipes in trenches shall bemeasured from the CommencingSurface to the inverts of thepipes.

A1 The location or type ofpipework in each item or groupof items shall be stated in itemdescriptions so that the piperuns included can be identifiedby reference to the Drawings.

A2 The materials, joint types,nominal bores and liningrequirements of pipes shall bestated in item descriptions.

A3 Item descriptions for pipesnot in trenches shall distinguishbetween the different categoriesof pipes listed in rule D1.

A4 The Commencing Surfaceshall be identified in thedescription of each item forwork involving excavation forwhich the Commencing Surfaceis not also the Original Surface.

A5 Where more than one pipeis expressly required to be laid inone trench the item descriptionsfor each pipe shall so state andalso identify the pipe run.Where pipes are laid in Frenchor rubble drains itemdescriptions shall so state.

A6 Trench depths exceeding4m shall be stated in itemdescriptions to the next highermultiple of 0.5 m.

A7 Item descriptions shallidentify separately excavationwhich is expressly required to becarried out by hand.

49

CLASS I

50

CLASS J: PIPEWORK – FITTINGS AND VALVES

Includes: Fittings and valves for pipeworkExcludes: Work included in classes I, K, L and Y

Piped building services (included in class Z)

FIRST DIVISION SECOND DIVISION THIRD DIVISION

1 Clay pipe fittings nr2 Concrete pipe fittings nr3 Iron or steel pipe fittings nr4 Polyvinyl chloride pipe fittings nr5 Glass reinforced plastic pipe fittings nr6 High density polyethylene pipe fittings nr7 Medium density polyethylene pipe fittings nr

1 Bends2 Junctions and branches3 Tapers4 Double collars5 Adaptors6 Glands7 Bellmouths8 Straight specials

1 Nominal bore: not exceeding200 mm

2 200–300 mm3 300–600 mm4 600–900 mm5 900–1200 mm6 1200–1500 mm7 1500–1800 mm8 exceeding

1800 mm

8 Valves and penstocks nr 1 Gate valves: hand operated2 power operated3 Non-return valves4 Butterfly valves: hand operated5 power operated6 Air valves7 Pressure reducing valves8 Penstocks

MEASUREMENT RULES DEFINITION RULES COVERAGE RULES ADDITIONAL DESCRIPTIONRULES

C1 Items for fittings and valvesshall be deemed to include thesupply of materials by theContractor, unless otherwisestated.

C2 Items for fittings and valvesshall be deemed to includeexcavation, preparation ofsurfaces, disposal of excavatedmaterial, upholding sides ofexcavation, backfilling andremoval of dead services except tothe extent that such work isincluded in classes I, K and L.

M1 Pipe fittings comprisingbackdrops to manholes shall beincluded in the items formanholes measured in class K.

M2 Straight specials shall bemeasured only where they areexpressly required. Straightspecials shall not be measuredwhere they are necessitated onlyby the layout of the work. Piperuns between manholes,chambers and other structureswhose lengths are not an exactmultiple of a standard pipelength shall be deemed torequire straight specials only ifthey are expressly required asrocker pipes.

D1 Pipe fittings on pipes ofdifferent nominal bores shall beclassified in the third divisionaccording to the nominal bore ofthe largest pipe.

D2 A straight special is a lengthof pipe either cut to length ormade to order.

C3 Items for straight specials shallbe deemed to include cutting.

A1 The materials, joint types,nominal bores and liningrequirements of pipe fittingsshall be stated in item. Fittingswith puddle flanges shall be sodescribed.

A2 Item descriptions for pipefittings to cast iron or spun ironpipework of nominal boreexceeding 300 mm and to allsteel pipework shall state theprincipal dimensions of eachfitting.

A3 Vertical bends in pipeworkof which the nominal boreexceeds 300 mm shall be sodescribed.

A4 Fittings to pipework not intrenches shall be so described.

A5 Fittings to relined watermains measured in class Y shallbe so described.

A6 The materials, nominal boresand any additional requirementssuch as joints, draincocks,extension spindles and bracketsshall be stated in itemdescriptions for valves andpenstocks.

A7 Valves and penstocks torelined water mains measured inclass Y shall be so described.

51

CLASS J

52

CLASS K: PIPEWORK – MANHOLES AND PIPEWORK ANCILLARIES

Includes: Manholes and other chambers, ducts, culverts, crossings and reinstatement, other ancillaries as listedExcludes: Work included in classes I, J, L and Y

Ducted building services (included in class Z)

FIRST DIVISION SECOND DIVISION THIRD DIVISION

1 Manholes nr 1 Brick2 Brick with backdrop3 In situ concrete4 In situ concrete with backdrop5 Precast concrete6 Precast concrete with backdrop

1 Depth: not exceeding 1.5 m2 1.5–2 m3 2–2.5 m4 2.5–3 m5 3–3.5 m6 3.5–4 m7 stated exceeding 4 m

2 Other stated chambers nr 1 Brick3 In situ concrete5 Precast concrete

3 Gullies nr 1 Clay2 Clay trapped3 In situ concrete4 In situ concrete trapped5 Precast concrete6 Precast concrete trapped7 Plastics8 Plastics trapped

4 French drains, rubble drains, ditches and trenches 1 Filling French and rubble drainswith graded material m3

2 Filling French and rubble drainswith rubble m3

3 Trenches for unpiped rubble drains m4 Rectangular section ditches:

unlined m5 lined m6 Vee section ditches: unlined m7 lined m8 Trenches for pipes or cables not

to be laid by the Contractor m

1 Cross-sectional area:not exceeding 0.25 m2

2 0.25–0.5 m2

3 0.5–0.75 m2

4 0.75–1 m2

5 1–1.5 m2

6 1.5–2 m2

7 2–3 m2

8 stated exceeding 3 m2

5 Ducts and metal culverts m 1 Cable ducts: 1 way2 2 way3 3 way4 stated number of ways

exceeding 35 Sectional corrugated metal culverts,

nominal internal diameter:not exceeding 0.5 m

6 0.5–1 m7 1–1.5 m8 exceeding 1.5 m

1 Not in trenches2 In trenches, depth: not exceeding

1.5 m3 1.5–2 m4 2–2.5 m5 2.5–3 m6 3–3.5 m7 3.5–4 m8 exceeding4m

MEASUREMENT RULES DEFINITION RULES COVERAGE RULES ADDITIONAL DESCRIPTIONRULES

D1 The centre line for multiplepipes, ducts or culverts shall bethe line equidistant between theinside faces of the outer pipewalls.

C1 Items for work in this classshall be deemed to includeexcavation, preparation ofsurfaces, disposal of excavatedmaterial, upholding sides ofexcavation backfilling and removalof dead services, except to theextent that such work is includedin classes I, J and L.

C2 Items for work in this classshall be deemed to includeconcrete, reinforcement,formwork, joints and finishes.

D2 The depths of manholes andother chambers shall bemeasured from the tops ofcovers to channel inverts or topsof base slabs, whichever is thelower.

D3 Drawpits shall be classed asother stated chambers.

C3 Item for manholes, otherstated chambers and gullies shallbe deemed to include all items ofmetalwork and pipework, otherthan valves, which occur within orat the surface of the item.

C4 Items for manholes withbackdrops shall be deemed toinclude the pipework andassociated fittings comprising thebackdrop.

A1 Type or mark numbers shallbe stated in item descriptionsfor manholes, other statedchambers and gullies of whichdetails are given elsewhere inthe Contract.

A2 Types and loading duties ofcovers shall be stated in itemdescriptions for manholes, otherstated chambers and gullies.

A3 Item descriptions formanholes, other statedchambers and gullies shallidentify separately those whichare expressly required to beexcavated by hand.

M1 Excavation and pipe layingfor piped French and rubbledrains are measured in class I.

A4 The nature of the fillingmaterial shall be stated in itemdescriptions for filling Frenchand rubble drains.

M2 The cross-sectional areas oflined ditches shall be measuredto the Excavated Surface.

A5 Materials and dimensions oflinings to ditches shall be statedin item descriptions.

M3 The rules in class I for pipesshall also apply to ducts andmetal culverts in this class exceptthat the lengths measured forducts and metal culverts not intrenches shall include lengthsoccupied by fittings.

D4 Non-circular metal culvertsshall be classified by theirmaximum nominal internal cross-sectional dimension.

D5 The rules in class I for pipesshall also apply to ducts andmetal culverts in this class.

C5 Items for ducts and metalculverts shall be deemed toinclude cutting and fittings.

A6 The rules in class I for pipesshall also apply to ducts andmetal culverts in this class.

53

CLASS K

54

CLASS K

FIRST DIVISION SECOND DIVISION THIRD DIVISION

6 Crossings nr 1 River, stream or canal, width:1–3 m

2 3–10 m3 stated exceeding 10 m4 Hedge5 Wall6 Fence7 Sewer or drain8 Other stated underground service

1 Pipe bore: not exceeding300 mm

2 300–900 mm3 900–1800 mm4 stated exceeding

1800 mm

7 Reinstatement m 1 Breaking up and temporaryreinstatement of roads

2 Breaking up and temporaryreinstatement of footpaths

3 Breaking up, temporary andpermanent reinstatement of roads

4 Breaking up, temporary andpermanent reinstatement offootpaths

5 Reinstatement of land

1 Pipe bore: not exceeding300 mm

2 300–900 mm3 900–1800 mm4 stated exceeding

1800 mm

6 Strip topsoil from easement andreinstate

8 Other pipework ancillaries 1 Reinstatement of field drains m2 Marker posts nr3 Timber supports left in

excavations m2

4 Metal supports left in excavations m2

5 Connections to existing manholesand other chambers nr

6 Connections to existing pipes,ducts and culverts nr

1 Pipe bore: not exceeding200 mm

2 200–300 mm3 300–600 mm4 600–900 mm5 900–1200 mm6 1200–1500 mm7 1500–1800 mm8 stated exceeding

1800 mm

NOTE

Manholes and other chambers may be measured in detail as set out in other classes of CESMM3.

MEASUREMENT RULES DEFINITION RULES COVERAGE RULES ADDITIONAL DESCRIPTIONRULES

M4 Crossings shall be measuredfor pipes, ducts and metalculverts.

M5 Crossings of streams shall bemeasured only where their widthexceeds 1 m.

D6 River, stream and canalcrossings shall be classified bytheir widths measured alongpipe, duct or culvert centre lineswhen the water surface is at thelevel (or the higher level offluctuation if applicable) shownon the drawing to whichreference is given in thePreamble in accordance withparagraph 5.20.

D7 The dimension used forclassification of bore in the thirddivision shall be the maximumnominal distance between theinside faces of the outer walls ofthe pipe, duct or culvert to beinstalled.

C6 Items for crossings shall bedeemed to include reinstatementunless otherwise stated.

A7 Where linings to rivers,streams or canals are to bebroken through and reinstatedthe type of lining shall be statedin item descriptions.

M6 Reinstatement shall bemeasured for pipes, ducts andmetal culverts.

M7 Lengths of reinstatementshall be measured along centrelines and shall include lengthsoccupied by manholes and otherchambers.

M8 Strip topsoil from easementand reinstate shall be measuredonly where it is expresslyrequired that a width of groundgreater than the nominal trenchwidth defined in accordancewith rule D1 in class L is to bestripped of topsoil before trenchexcavation and subsequentlyreinstated.

D7 The dimension used forclassification of bore in the thirddivision shall be the maximumnominal distance between theinside faces of the outer walls ofthe pipe, duct or culvert to beinstalled.

D8 Crossings of roads and pathsshall be classed as breaking upand reinstatement of roads andpaths.

C7 Additional reinstatement shallbe deemed to be included in theitems for manholes and otherchambers.

C8 Removal and reinstatement ofkerbs and channels shall bedeemed to be included in theitems for breaking up andreinstatement of roads andfootpaths.

C9 Items for strip topsoil fromeasement and reinstate shall bedeemed to include storing andprotecting topsoil andreinstatement of land.

A8 Types and depths ofsurfacing, including base andsubbase courses, shall be statedin item descriptions for breakingup and reinstatement of roadsand footpaths.

A9 Item descriptions for striptopsoil from easement andreinstate shall state anylimitations on the width to bestripped and reinstated.

A10 Item descriptions forreinstatement of land and forstrip topsoil from easement andreinstate shall distinguishbetween grassland, gardens,sports fields and cultivated land.

M9 Other pipework ancillariesshall be measured for pipes,ducts and metal culverts.

M10 The lengths measured forreinstatement of field drains shallbe the nominal trench widthdefined in accordance with ruleD1 in class L.

M11 The area measured forsupports left in excavations shallbe the undeveloped area incontact with the surfaces forwhich the supports are expresslyrequired to be left in.

D7 The dimension used forclassification of bore in the thirddivision shall be the maximumnominal distance between theinside faces of the outer walls ofthe pipe, duct or culvert to beinstalled.

C10 Items for reinstatement offield drains shall be deemed toinclude connections to existingfield drains.

A11 Sizes and types of markerposts shall be stated in itemdescriptions.

A12 Item descriptions forconnections to existingmanholes and other chambersand to existing pipes, ducts andculverts shall identify the natureof the existing service and theextent of the work to beincluded.

55

CLASS K

56

CLASS L: PIPEWORK – SUPPORTS AND PROTECTION, ANCILLARIES TO LAYING AND EXCAVATION

Includes: Extras to excavation and backfilling of trenches for pipework, ducts and metal culverts, manholes and other chambers,headings, thrust boring and pipe jackingPipe laying in headings and by thrust boring and pipe jackingProvision of supports and protection to pipework, ducts and metal culverts

Excludes: Work included in classes I, J, K and YInsulation to building services (included in class Z)

FIRST DIVISION SECOND DIVISION THIRD DIVISION

1 Extras to excavation and backfilling m3 1 In pipe trenches2 In manholes and other chambers3 In headings4 In thrust boring5 In pipe jacking

1 Excavation of rock2 Excavation of mass concrete3 Excavation of reinforced concrete4 Excavation of other artificial hard

material5 Backfilling above the Final

Surface with concrete6 Backfilling above the Final

Surface with stated materialother than concrete

7 Excavation of natural materialbelow the Final Surface andbackfilling with concrete

8 Excavation of natural materialbelow the Final Surface andbackfilling with stated materialother than concrete

MEASUREMENT RULES DEFINITION RULES COVERAGE RULES ADDITIONAL DESCRIPTIONRULES

M1 Items shall be given in thisclass in addition to the items forprovision, laying and jointing ofpipes, ducts and culverts and forthe excavation and backfilling oftrenches in classes I and K. Itemsshall be given in this class inaddition to the items formanholes and other chambers inclasses K and Y.

M2 Work in this class associatedwith ducts and metal culvertsshall be measured as set out forwork associated with pipes. Thedimension used for classificationin the third division (L 2–8 * *)shall be the maximum nominaldistance between the insidefaces of the outer duct or culvertwalls.

M3 Breaking up andreinstatement of roads andpavings shall be included inclass K.

C1 Items for work in this classshall be deemed to includeexcavation, preparation ofsurfaces, disposal of excavatedmaterial, upholding sides ofexcavation, backfilling andremoval of dead services, exceptto the extent that such work isincluded in classes I, J and K or inthe items for extras to excavationand backfilling in this class.

C2 Items for work in this classshall be deemed to includeconcrete, reinforcement,formwork, joints and finishes.

M4 The volume of extras toexcavation and backfilling in pipetrenches shall be calculated bymultiplying together the averagedepth and length of the materialremoved or backfilled and thenominal trench width.

M5 No volume of extras toexcavation and backfilling inmanholes and other chambersshall be measured outside themaximum plan area of themanhole or other chamber.

M6 The volume of extras toexcavation and backfilling forpipe laying in headings, in thrustboring and in pipe jacking shallbe measured by multiplyingtogether the internal cross-sectional area of pipe and thelength of the material excavatedor backfilled. Packing inheadings shall not be measured.

M7 Backfilling above the FinalSurface (L 1 * 5–6) shall bemeasured only where it isexpressly required that thematerial excavated shall not beused for backfilling. Excavationbelow the Final Surface andbackfilling (L 1 * 7–8) shall bemeasured only where it isexpressly required.

M8 An isolated volume of rock,concrete or other artificial hardmaterial occurring within othermaterial to be excavated shallnot be measured separatelyunless its volume exceeds0.25 m3.

D1 The nominal trench width ifnot stated in the Contract shallbe taken as 500 mm greaterthan the maximum nominaldistance between the insidefaces of the outer pipe wallswhere this distance does notexceed 1 m and as 750 mmgreater than this distance whereit exceeds 1 m.

A1 Item descriptions shallidentify separately excavationwhich is expressly required to becarried out by hand.

57

CLASS L

58

CLASS L

FIRST DIVISION SECOND DIVISION THIRD DIVISION

2 Special pipe laying methods m 1 In headings2 Thrust boring3 Pipe jacking

1 Nominal bore: not exceeding200 mm

2 200–300 mm3 300–600 mm4 600–900 mm5 900–1200 mm6 1200–1500 mm7 1500–1800 mm8 stated exceeding

1800 mm

3 Beds m4 Haunches m5 Surrounds m

1 Sand2 Selected excavated granular material3 Imported granular material4 Mass concrete5 Reinforced concrete

6 Wrapping and lagging m

7 Concrete stools and thrust blocks nr 1 Volume: not exceeding 0.1 m3

2 0.1–0.2 m3

3 0.2–0.5 m3

4 0.5–1 m3

5 1–2 m3

6 2–4 m3

7 4–6 m3

8 stated exceeding 6 m3

8 Other isolated pipe supports nr 1 Height: not exceeding 1 m2 1–1.5 m3 1.5–2 m4 2–3 m5 3–4 m6 4–5 m7 5–6 m8 stated exceeding 6 m

MEASUREMENT RULES DEFINITION RULES COVERAGE RULES ADDITIONAL DESCRIPTIONRULES

M9 Special pipe laying methodsshall be measured only wherethey are expressly required.

M10 Access pits, shafts andjacking blocks, where expresslystated in the Contract to beexecuted by the Contractor andof which the nature and extentare expressly stated in theContract, shall be measured asSpecified Requirements in class A.

C3 Items for special pipe layingmethods shall be deemed toinclude crossings, provision andremoval of access pits, shafts andjacking blocks unless otherwisestated and other work associatedwith special pipe laying methodsnot included in the items forprovision, laying and jointing ofpipes given in class I.

A2 Item descriptions for specialpipe laying methods shallidentify the run of pipe or pipes.The type of packing shall bestated in item descriptions forpipes in headings.

M11 Lengths of beds, haunchesand surrounds shall be measuredalong pipe centre lines includinglengths occupied by fittings andvalves but not including lengthsoccupied by manholes and otherchambers through which theyare not continued.

D2 Items for haunches andsurrounds shall include beds ofthe same material.

D3 Items for beds, haunches andsurrounds to multiple pipes shallbe classified in the third divisionaccording to the nominaldistance between the insidefaces of the outer pipe walls.

A3 Materials used for beds,haunches and surrounds and thedepths of beds shall be stated initem descriptions.

A4 Beds, haunches andsurrounds to multiple pipes shallbe so described stating thenumber of pipes and themaximum nominal distancebetween the inside faces of theouter pipe walls.

M12 Lengths of wrapping andlagging shall be measured alongeach pipe centre line includinglengths occupied by fittings andvalves but not including lengthsoccupied by manholes and otherchambers through which thepipes are not continued.

C4 Items for wrapping andlagging of pipes shall be deemedto include wrapping and laggingof fittings, valves and joints.

A5 Materials used for wrappingand lagging of pipes shall bestated in item descriptions.

D4 The volumes used forclassification of concrete stoolsand thrust blocks shall excludethe volumes occupied by pipes.

C5 Items for concrete stools andthrust blocks shall be deemed toinclude pipe fixings.

A6 Item descriptions forconcrete stools and thrustblocks shall state thespecification of the concrete andwhether it is reinforced.

D5 The height of pipe supportsused for classification shall bemeasured from the ground orother supporting surface to theinvert of the highest pipe wherepipes are supported from belowand of the lowest pipe wherepipes are supported from above.

D6 Where two or more pipes arecarried by one support, the itemfor the support shall be classifiedin the third division by theaggregate bore of the pipessupported.

A7 Principal dimensions andmaterials shall be stated in itemdescriptions for pipe supports.

59

CLASS L

60

CLASS M: STRUCTURAL METALWORK

Excludes: Metalwork in concrete (included in classes C, G and H)Metalwork in pipework (included in classes I, J, K and L)Miscellaneous metalwork (included in class N)Metalwork in piles (included in classes P and Q)Metalwork in fences (included in class X)

FIRST DIVISION SECOND DIVISION THIRD DIVISION

1 Fabrication of main members for bridges t 1 Rolled sections2 Plates or flats3 Built-up box or hollow sections

1 Straight on plan2 Curved on plan3 Straight on plan and cambered4 Curved on plan and cambered

2 Fabrication of subsidiary members for bridges t 1 Deck panels

2 Bracings3 External diaphragms

3 Fabrication of members for frames4 Fabrication of other members

1 Columns t2 Beams t3 Portal frames t4 Trestles, towers and built-up

columns t5 Trusses and built-up girders t6 Bracings, purlins and cladding rails t

1 Straight on plan2 Curved on plan3 Straight on plan and cambered4 Curved on plan and cambered

7 Grillages t8 Anchorages and holding down

bolt assemblies nr

5 Erection of members for bridges6 Erection of members for frames7 Erection of other members

1 Trial erection t2 Permanent erection t

3 Site bolts: black nr4 HSFG general grade nr5 HSFG higher grade nr6 SFG load indicating or

load limit types, generalgrade nr

7 HSFG load indicating orload limit types, highergrade nr

1 Diameter: not exceeding 16 mm2 16–20 mm3 20–24 mm4 24–30 mm5 30–36 mm6 36–42 mm7 stated exceeding

42 mm

8 Off site surface treatment m2 1 Blast cleaning2 Pickling3 Flame cleaning4 Wire brushing5 Metal spraying6 Galvanizing7 Painting

MEASUREMENT RULES DEFINITION RULES COVERAGE RULES ADDITIONAL DESCRIPTIONRULES

M1 Items shall be included inmiscellaneous metalwork (classN) for metal components notincluded in this class butassociated with metal structures.

M2 The mass of members, otherthan plates or flats, shall becalculated from the overalllengths of the members with nodeductions for splay-cut ormitred ends.

M3 The mass of membersmeasured shall be that of plates,rolled sections, shear connectors,stiffeners, cleats, packs, spliceplates and other fittings.

M4 No allowance shall be madein the measurements for rollingmargin and other permissibledeviations. The mass of weldfillets, bolts, nuts, washers, rivetsand protective coatings shall notbe measured.

M5 No deductions shall be madefor the mass of metal removedto form notches and holes eachnot exceeding 0.1 m2 in areameasured in plane.

M6 The mass of steel shall betaken for measurement as785 kg/m2 per 100 mmthickness (7.85 t/m3). Themasses of other metals shall betaken as stated in theSpecification or, where not sostated, as stated in the supplier’scatalogue.

M7 Anchorages and holdingdown bolt assemblies shall bemeasured by the number ofcomplete assemblies.

C1 Items for fabrication ofmetalwork shall be deemed toinclude delivery of fabricatedmetalwork to the Site.

A1 The materials and grades ofmaterials used shall be stated initem descriptions for fabricationof members.

A2 Item descriptions forfabrication of members shallidentify tapered or castellatedmembers.

A3 Item descriptions forfabrication of members otherthan for portal frames shallidentify cranked members.

A4 Details of the memberscomprising boom and infillconstruction shall be stated initem descriptions for trestles,towers and built-up columnsand trusses and built-up girders.

A5 Item descriptions foranchorages and holding downbolt assemblies shall stateparticulars of the type ofanchorage or assembly.

C2 Items for erection of membersshall be deemed to include workcarried out after delivery offabricated metalwork to the Site.

C3 Items for site bolts shall bedeemed to include supply anddelivery to the Site.

A6 Item descriptions forerection shall separately identifyand locate separate bridges andstructural frames and, whereappropriate, parts of bridges orframes.

A7 Where fixing clips andresilient pads are used to secureoverhead crane rails, itemdescriptions shall so state.

M8 Surface treatment carriedout on the Site shall be classedas painting (class V).

A8 Materials and number ofapplications shall be stated initem descriptions for metalspraying, galvanizing andpainting.

61

CLASS M

62

CLASS N: MISCELLANEOUS METALWORK

Excludes: Metal reinforcement for concrete (included in classes C, G, H and R)Metal inserts in concrete (included in classes G and H)Pipework (included in classes I, J, K and L)Structural metalwork (included in class M)Fittings and fastenings to timber (included in class O)Piles (included in classes P and Q)Traffic signs (included in class R)Rail track and accessories (included in class S)Fences (included in class X)

FIRST DIVISION SECOND DIVISION THIRD DIVISION

1 1 Stairways and landings t2 Walkways and platforms t

3 Ladders m4 Handrails m5 Bridge parapets m

6 Miscellaneous framing m 1 Angle section2 Channel section3 I section4 Tubular section

7 Plate flooring m2

8 Open grid flooring m2

2 1 Cladding m2

2 Welded mesh panelling m2

3 Duct covers m2

4 Tie rods nr

5 Walings m

6 Bridge bearings nr 1 Roller2 Slide3 Rocker4 Cylindrical5 Spherical6 Elastomeric7 Rubber pot8 Proprietary

7 Uncovered tanks nr8 Covered tanks nr

1 Volume: not exceeding 1 m3

2 1–3 m3

3 3–10 m3

4 10–30 m3

5 30–100 m3

6 100–300 m3

7 300–1000 m3

8 stated exceeding1000 m3

NOTE

As an alternative to the additional description given as required by rule A1, item descriptions may identify assemblies by mark number inaccordance with paragraph 5.12.

MEASUREMENT RULES DEFINITION RULES COVERAGE RULES ADDITIONAL DESCRIPTIONRULES

M1 Painting carried out on theSite shall be classed as painting(class V).

M2 Masses calculated formiscellaneous metalworkassemblies shall include the massof all metal components andattached pieces.

M3 No deduction from themasses or areas measured formiscellaneous metalwork shallbe made for openings and holeseach not exceeding 0.5 m2 inarea.

C1 Items for miscellaneousmetalwork shall be deemed toinclude fixing to other work,supply of fixing components anddrilling or cutting of other work.

A1 Item descriptions shall statethe specification and thicknessesof metal, surface treatmentscarried out prior to delivery tosite and principal dimensions ofmiscellaneous metalworkassemblies.

M4 The lengths of ladders shallbe measured along the lengthsof stringers. The lengths ofhandrails and bridge parapetsshall be measured along theirtop members.

A2 Where ladders include safetyloops, rest platforms or returnedstringers, item descriptions shallso state.

M5 The lengths of miscellaneousframing shall be measured alongthe external perimeter offraming.

C2 Items for plate and open gridflooring shall be deemed toinclude supporting metalworkunless otherwise stated.

C3 Items for welded meshpanelling and duct covers shall bedeemed to include supportingmetalwork unless otherwisestated.

C4 Items for tie rods shall bedeemed to include concrete,reinforcement and joints.

C5 Items for bridge bearings shallbe deemed to include for groutingbeneath plates.

A3 Item descriptions for bridgebearings shall state thecomposition and materials ofthe bearing.

A4 Item descriptions for tanksshall state the principaldimensions.

63

CLASS N

64

CLASS O: TIMBER

Includes: Timber components and fittingsTimber deckingFittings and fastenings to timber components and decking

Excludes: Formwork to concrete (included in class G)Timber piles (included in class P)Timber sleepers (included in class S)Timber supports in tunnels (included in class T)Timber fencing (included in class X)Carpentry and joinery in simple building works incidental to civil engineering works (included in class Z)

FIRST DIVISION SECOND DIVISION THIRD DIVISION

1 Hardwood components m2 Softwood components m

1 Cross-sectional area:not exceeding 0.01 m2

2 0.01–0.02 m2

3 0.02–0.04 m2

4 0.04–0.1 m2

5 0.1–0.2 m2

6 0.2–0.4 m2

7 exceeding 0.4 m2

1 Length: not exceeding 1.5 m2 1.5–3 m3 3–5 m4 5–8 m5 8–12 m6 12–20 m7 stated exceeding 20 m

3 Hardwood decking m2

4 Softwood decking m21 Thickness: not exceeding 25 mm2 25–50 mm3 50–75 mm4 75–100 mm5 100–125 mm6 125–150 mm7 exceeding 150 mm

5 Fittings and fastenings nr 1 Straps2 Spikes3 Coach screws4 Bolts5 Plates

MEASUREMENT RULES DEFINITION RULES COVERAGE RULES ADDITIONAL DESCRIPTIONRULES

C1 Items for timber shall bedeemed to include fixing, boring,cutting and jointing.

M1 The length of timbercomponents measured shall betheir overall lengths with noallowance for scarfed or otherjoints.

D1 The cross-sectional areasstated for classification of timbercomponents shall be theirnominal gross cross-sectionalareas.

A1 The nominal gross cross-sectional dimensions,thicknesses, grade or speciesand any impregnationrequirements or special surfacefinishes shall be stated in itemdescriptions for timbercomponents.

A2 The structural use andlocation of timber componentsshall be stated in itemdescriptions for componentslonger than 3 m.

M2 No deduction from the areasmeasured for timber deckingshall be made for openings andholes each not exceeding 0.5 m2

in area.

D2 The thickness stated forclassification of timber deckingshall be the nominal grossthickness.

A3 The nominal gross cross-sectional dimensions,thicknesses, species and anyimpregnation requirements orspecial surface finishes shall bestated in item descriptions fortimber decking.

A4 Materials, types and sizes offittings and fastenings shall bestated in item descriptions.

65

CLASS O

66

CLASS P: PILES

Excludes: Boring for site investigation (included in class B)Ground anchors (included in class C)Walings and tie rods (included in class N)Piling ancillaries (included in class Q)

FIRST DIVISION SECOND DIVISION THIRD DIVISION

1 Bored cast in place concrete piles2 Driven cast in place concrete piles

1 Diameter: 300 mm or 350 mm2 400 mm or 450 mm3 500 mm or 550 mm4 600 mm or 750 mm5 900 mm or 1050 mm6 1200 mm or 1350 mm7 1500 mm

1 Number of piles nr2 Concreted length m3 Depth bored or driven to

stated maximum depth m

3 Preformed concrete piles4 Preformed concrete sheet piles5 Timber piles

1 Cross-sectional area: not exceeding0.025 m2

2 0.025–0.05 m2

3 0.05–0.1 m2

4 0.1–0.15 m2

5 0.15–0.25 m2

6 0.25–0.5 m2

7 0.5–1 m2

8 exceeding 1 m2

1 Number of piles of statedlength nr

2 Depth driven m

6 Isolated steel piles 1 Mass: not exceeding 15 kg/m2 15–30 kg/m3 30–60 kg/m4 60–120 kg/m5 120–250 kg/m6 250–500 kg/m7 500 kg/m – 1 t/m8 exceeding 1 t/m

1 Number of piles of statedlength nr

2 Depth driven m

MEASUREMENT RULES DEFINITION RULES COVERAGE RULES ADDITIONAL DESCRIPTIONRULES

M1 Bored and driven depthsshall be measured along the axesof piles from the CommencingSurface to the toe levels ofbored piles, to the bottom of thecasings of driven cast in placepiles and to the bottom of thetoes of other driven piles. TheCommencing Surface adopted inthe preparation of the Bill ofQuantities as the surface atwhich boring or driving isexpected to begin shall beadopted for the measurement ofthe completed work.

C1 Items for piles and stonecolumns shall be deemed toinclude disposal of excavatedmaterial.

A1 Materials of which piles arecomposed shall be stated initem descriptions.

A2 Preliminary piles shall beidentified in item descriptions.Raked piles shall be identified initem descriptions and theirinclination ratios stated.

A3 The structure to besupported and the CommencingSurface shall be identified initem descriptions for piles.

M2 Each group of items for castin place concrete piles shallcomprise

(a) an item for the number ofpiles (P 1–2 * 1)

(b) an item for the totalconcreted length of piles(P 1–2 * 2)

(c) an item for the total depthbored or driven (P 1–2 * 3).

M3 The concreted lengths ofcast in place concrete piles shallbe measured from the cut-offlevels expressly required to thetoe levels expressly required.

D1 The maximum depth statedin item descriptions for thedepth of cast in place concretepiles shall be the depth which isnot exceeded by any pileincluded in the item.

D2 Piles comprising a drivenpermanent steel casing which isfilled with concrete shall beclassed as driven cast in placeconcrete piles where the pilesare designed for the load to becarried on the concrete.

A4 The diameter shall be statedin item descriptions for cast inplace concrete piles.

A5 Contiguous bored piles shallbe identified in itemdescriptions.

M4 Each group of items forpreformed concrete and timberpiles shall comprise

(a) one or more items for thenumber of piles of statedlength (P 3–6 * 1)

(b) an item for the total depthdriven (P 3–6 * 2).

D3 The lengths of preformedconcrete and timber piles shallbe the lengths expressly requiredto be supplied excludingextensions but including headsand shoes.

A6 The cross-section type andcross-sectional dimensions ordiameter shall be stated in itemdescriptions for preformedconcrete and timber piles.

A7 Item descriptions forpreformed concrete piles shallstate if they are prestressed.

A8 Details of treatments andcoatings shall be stated in itemdescriptions for the number ofpiles.

A9 Details of driving heads andof shoes shall be stated in itemdescriptions for the number ofpiles.

M5 Each group of items forisolated steel piles shall comprise

(a) one or more items for thenumber of piles of statedlength (P 7 * 1)

(b) an item for the total depthdriven (P 7 * 2).

D4 The lengths of isolated steelpiles shall be the lengthsexpressly required to be suppliedexcluding extensions.

D5 Piles comprising a drivenpermanent steel casing which isfilled with concrete shall beclassed as isolated steel pileswhere the piles are designed forthe load to be carried on thecasing. Filling such piles shall beclassed as filling hollow pileswith concrete (Q 5 3 *).

A10 The mass per metre andcross-sectional dimensions shallbe stated in item descriptionsfor isolated steel piles.

A11 Details of treatments andcoatings shall be stated in itemdescriptions for the number ofpiles.

67

CLASS P

68

CLASS P

FIRST DIVISION SECOND DIVISION THIRD DIVISION

7 Interlocking steel piles 1 Section modulus: not exceeding500 cm3/m

2 500–800 cm3/m3 800–1200 cm3/m4 1200–2000 cm3/m5 2000–3000 cm3/m6 3000–4000 cm3/m7 4000–5000 cm3/m8 exceeding

5000 cm3/m

1 Length of special piles m2 Driven area m2

3 Area of piles of length:not exceeding 14 m m2

4 14–24 m m2

5 exceeding 24 m m2

8 Stone columns 1 Diameter: not exceeding 300 mm2 300 mm – 450 mm3 450 mm – 600 mm4 600 mm – 750 mm5 750 mm – 900 mm6 900 mm – 1050 mm7 1050 mm – 1200 mm8 exceeding 1200 mm

1 Number of columns nr2 Length of columns m

MEASUREMENT RULES DEFINITION RULES COVERAGE RULES ADDITIONAL DESCRIPTIONRULES

M6 Each group of items forinterlocking steel piles shallcomprise

(a) one or more items for thetotal length of each type ofspecial pile, if any (P 8 * 1)

(b) an item for the total drivenarea of piles (P 8 * 2)

(c) one or more items for thetotal area of piles dividedinto the ranges of lengthgiven in the third division(P 8 * 3–5).

M7 The areas of interlockingsteel piles shall be calculated bymultiplying the meanundeveloped horizontal lengthsof the pile walls formed(including lengths occupied byspecial piles) by the depthsmeasured in accordance withrule M1 in the case of items forthe driven areas (P 8 * 2) and bythe lengths defined inaccordance with rule D6 in thecase of items for the areas ofpiles (P 8 * 3–5).

M8 Closure and taper pilesclassed as special piles shall bemeasured only where they areexpressly required.

D6 The lengths of interlockingsteel piles shall be the lengthsexpressly required to be suppliedexcluding extensions.

D7 Interlocking steel corner,junction, closure and taper pilesshall be classed as special piles.

A12 The section reference ormass per metre and sectionmodulus shall be stated in itemdescriptions for interlockingsteel piles.

A13 Details of treatments andcoatings shall be stated in itemdescriptions for area of piles.

A14 The type of special pileshall be stated in itemdescriptions for the length ofspecial piles.

C2 Items for stone columns shallinclude for boring.

A15 The diameter shall bestated in item descriptions forstone columns.

69

CLASS P

70

CLASS Q: PILING ANCILLARIES

Includes: Work ancillary to pilingExcludes: Ground anchors (included in class C)

Piles (included in class P)Walings and tie rods (included in class N)

FIRST DIVISION SECOND DIVISION THIRD DIVISION

1 Cast in place concrete piles 1 Pre-boring m2 Backfilling empty bore with stated

material m3 Permanent casings each length:

not exceeding 13 m m4 exceeding 13 m m5 Enlarged bases nr7 Cutting off surplus lengths m8 Preparing heads nr

1 Diameter: 300 mm or 350 mm2 400 mm or 450 mm3 500 mm or 550 mm4 600 mm or 750 mm5 900 mm or 1050 mm6 1200 mm or 1350 mm7 1500 mm

2 Cast in place concrete piles 1 Reinforcement t 1 Straight bars, nominal size:not exceeding 25 mm

2 exceeding 25 mm3 Helical bars of stated nominal

size

3 Preformed concrete piles4 Timber piles

1 Pre-boring m2 Jetting m3 Filling hollow piles with concrete m4 Number of pile extensions nr5 Length of pile extensions, each

length: not exceeding 3 m m6 exceeding 3 m m7 Cutting off surplus lengths m8 Preparing heads nr

1 Cross-sectional area:not exceeding 0.025 m2

2 0.025–0.05 m2

3 0.05–0.1 m2

4 0.1–0.15 m2

5 0.15–0.25 m2

6 0.25–0.5 m2

7 0.5–1 m2

8 stated exceeding 1 m2

5 Isolated steel piles 1 Pre-boring m2 Jetting m3 Filling hollow piles with concrete m4 Number of pile extensions nr5 Length of pile extensions,

each length: not exceeding 3 m m6 exceeding 3 m m7 Cutting off surplus lengths m8 Preparing heads nr

1 Mass: not exceeding 15 kg/m2 15–30 kg/m3 30–60 kg/m4 60–120 kg/m5 120–250 kg/m6 250–500 kg/m7 500 kg/m – 1 t/m8 stated exceeding 1 t/m

MEASUREMENT RULES DEFINITION RULES COVERAGE RULES ADDITIONAL DESCRIPTIONRULES

M1 Work in this class, otherthan backfilling empty bore forcast in place concrete piles, shallbe measured only where it isexpressly required.

C1 Items for piling ancillaries shallbe deemed to include disposal ofsurplus materials unless otherwisestated.

M2 The lengths of permanentcasings shall be measured fromthe Commencing Surface to thebottom of the casing.

D1 The diameter used forclassification in the third divisionshall be the diameter of thepiles.

C2 Items for permanent casingsshall be deemed to include drivingheads and shoes.

A1 The diameters of enlargedbases for bored piles shall bestated in item descriptions.

A2 Materials, thickness anddetails of treatments andcoatings shall be stated in itemdescriptions for permanentcasings. Item descriptions forcutting off surplus lengths whichinclude permanent casings shallso state.

M3 The mass measured forreinforcement shall include themass of reinforcement in laps.

M4 The mass of steelreinforcement shall be taken as0.785 kg/m per 100 mm2 ofcross-section (7.85 t/m3). Themass of other reinforcingmaterials shall be taken as statedin the Contract.

D2 The nominal size used forclassification in item descriptionsfor bar reinforcement shall bethe cross-sectional size.

C3 Items for reinforcement shallbe deemed to include supportingreinforcement.

A3 Materials shall be stated initem descriptions forreinforcement.

A4 Details of couplers for hightensile steel reinforcementwhich are expressly requiredshall be stated in itemdescriptions for reinforcement.

M5 Driving extended piles shallbe included in the measurementof the items for driven depth inclass P.

M6 Each group of items for pileextensions shall comprise

(a) an item for the number ofpile extensions (Q 3–4 4 *)

(b) one or two items for thelength of pile extensionsdivided into the ranges oflength given in the seconddivision (Q 3–4 5–6 *).

M7 The length of pile extensionsmeasured shall not includelengths formed from materialarising from cutting off surpluslengths of other piles.

M8 The length measured fortimber pile extensions shallinclude lengths occupied byscarfed or other joints.

D3 The cross-sectional area usedfor classification in the thirddivision shall be the cross-sectional area of the piles.

C4 Items for pre-boring shall bedeemed to include grouting voidsbetween the pile and the bore.

C5 Items for pile extensions shallbe deemed to include the worknecessary to attach the extensionto the pile.

C6 Items for filling hollow pileswith concrete shall be deemed toinclude removal of material fromwithin the pile before concreting.

A5 Item descriptions for fillinghollow piles with concrete shallstate the specification of theconcrete.

A6 Materials of which pileextensions are composed shallbe stated in item descriptionsfor their length.

M5 Driving extended piles shallbe included in the measurementof the items for driven depth inclass P.

M9 Each group of items for pileextensions shall comprise

(a) an item for the number ofpile extensions (Q 5 4 *)

(b) one or two items for thelength of pile extensionsdivided into the ranges oflength given in the seconddivision (Q 5 5–6 *).

M7 The length of pile extensionsmeasured shall not includelengths formed from materialarising from cutting off surpluslengths of other piles.

D4 The mass used forclassification in the third divisionshall be the mass of the piles.

C4 Items for pre-boring shall bedeemed to include grouting voidsbetween the pile and the bore.

C5 Items for pile extensions shallbe deemed to include the worknecessary to attach the extensionto the pile.

C6 Items for filling hollow pileswith concrete shall be deemed toinclude removal of material fromwithin the pile before concreting.

A5 Item descriptions for fillinghollow piles with concrete shallstate the specification of theconcrete.

A6 Materials of which pileextensions are composed shallbe stated in item descriptionsfor their length.

71

CLASS Q

72

CLASS Q

FIRST DIVISION SECOND DIVISION THIRD DIVISION

6 Interlocking steel piles 1 Pre-boring m2 Jetting m4 Number of pile extensions nr5 Length of pile extensions, each

length: not exceeding 3 m m6 exceeding 3 m m7 Cutting off surplus lengths m8 Preparing heads nr

1 Section modulus:not exceeding 500 cm3/m

2 500–800 cm3/m3 800–1200 cm3/m4 1200–2000 cm3/m5 2000–3000 cm3/m6 3000–4000 cm3/m7 4000–5000 cm3/m8 stated exceeding

5000 cm3/m

7 Obstructions h

8 Pile tests nr 1 Maintained loading with variousreactions

2 Constant rate of penetration3 Horizontal loading

1 Test load: not exceeding 100 t2 100–200 t3 200–300 t4 300–400 t5 400–600 t6 600–800 t7 800–1000 t8 exceeding 1000 t

4 Non-destructive integrity5 Inclinometer installations

MEASUREMENT RULES DEFINITION RULES COVERAGE RULES ADDITIONAL DESCRIPTIONRULES

M5 Driving extended piles shallbe included in the measurementof the items for driven depth inclass P.

M10 Each group of items forpile extensions shall comprise

(a) an item for the number ofpile extensions (Q 6 4 *)

(b) one or two items for thelength of pile extensionsdivided into the ranges oflength given in the seconddivision (Q 6 5–6 *).

M7 The length of pile extensionsmeasured shall not includelengths formed from materialarising from cutting off surpluslengths of other piles.

M11 The lengths measured forcutting off surplus lengths ofinterlocking steel piles shall bethe mean undevelopedhorizontal lengths to be cut(including lengths occupied byspecial piles).

D5 The section modulus used forclassification in the third divisionshall be the section modulus ofthe piles.

C5 Items for pile extensions shallbe deemed to include the worknecessary to attach the extensionto the pile.

A6 Materials of which pileextensions are composed shallbe stated in item descriptionsfor their length.

M12 Obstructions shall bemeasured only for breaking outrock or artificial hard materialencountered above the foundingstratum of bored piles.

A7 Item descriptions for piletests shall identify those whichare to preliminary piles.

A8 Item descriptions for loadingtests shall state the load. Wherethe load is applied to rakingpiles item descriptions shall sostate.

73

CLASS Q

74

CLASS R: ROADS AND PAVINGS

Includes: Sub-base, base and surfacing of roads, runways and other paved areasKerbing and light duty pavements, footways and cycle tracksTraffic signs and markings

Excludes: Earthworks (included in class E)Drainage (included in classes I, J, K and L)Fences and gates (included in class X)Gantries and other substantial structures supporting traffic signsMaintenance of roads and pavings

FIRST DIVISION SECOND DIVISION THIRD DIVISION

1 Unbound sub-base 1 Type 1 unbound mixtures m2

2 Type 2 unbound mixtures m2

3 Type 3 (open graded) unboundmixtures m2

4 Category B (close graded)unbound mixtures m2

5 Type 4 (asphalt arrisings)unbound mixtures m2

1 Depth: not exceeding 30 mm2 30–60 mm3 60–100 mm4 100–150 mm5 150–200 mm6 200–250 mm7 250–300 mm8 exceeding 300 mm

6 Geotextiles m2

7 Additional depth of statedmaterial m3

2 Cement and other hydraulically bound pavements 1 Cement bound granular mixture m2

2 Fly ash bound mixture 1 andhydraulic road binder boundmixture 1 m2

3 Slag bound mixture B2, fly ashbound mixture 2 and hydraulicroad binder bound mixture 2 m2

4 Slag bound mixture B3, fly ashbound mixture 3 and hydraulicroad binder bound mixture 3 m2

5 Fly ash bound mixture 5 m2

6 Slag bound mixtures B1-1 B1-2B1-3 B1-4 m2

7 Soil treated by cement m2

8 Soil treated by other statedmaterial m2

1 Depth: not exceeding 30 mm2 30–60 mm3 60–100 mm4 100–150 mm5 150–200 mm6 200–250 mm7 250–300 mm8 exceeding 300 mm

3 Bituminous bound pavements 1 Hot rolled asphalt base m2

2 Hot rolled asphalt binder m2

3 Dense base and binder courseasphalt concrete with pavinggrade bitumen (recipe mixtures) m2

4 Dense asphalt concrete surfacecourse m2

5 Hot rolled asphalt surfaceconcrete m2

6 Close graded asphalt concretesurface course m2

7 Fine graded asphalt concretesurface course m2

8 Open graded asphalt concretesurface course m2

4 Bituminous bound pavements 1 Dense base and binder courseasphalt concrete (design mixtures) m2

2 EME2 base and binder courseasphalt concrete m2

3 Stone mastic asphalt bindercourse and regulating course m2

4 Porous asphalt m2

5 Hot rolled asphalt surface courseand binder course m2

6 Cold recycled bound material m2

7 Cold milling/planning m2

8 Regulating course of statedmaterial t

MEASUREMENT RULES DEFINITION RULES COVERAGE RULES ADDITIONAL DESCRIPTIONRULES

D1 Types, categorized andmixtures refer to the Manual ofContract Documents forHighway Works, Volume 1Specification for Highway Worksdated November 2009 publishedby The Stationery Office.

C1 Items for work in this classinvolving in situ concrete shall bedeemed to include formwork andfinishes to concrete.

A1 Item descriptions for allcourses of paving, road makingmaterials and pavement slabsshall identify the material andstate the depth of each courseor slab and the spread rate ofapplied surface finishes.

A2 Item descriptions for work inthis class which is applied tosurfaces inclined at an angleexceeding 108 to the horizontalshall so state.

M1 The width of each course ofmaterials shall be measured atthe top surface of that course.The areas of manhole covers andother intrusions into a courseshall not be deducted where thearea of the intrusion is less than1 m2.

M2 The area of additionalgeotextiles in laps shall not bemeasured.

A3 The type and grade ofmaterial shall be stated in itemdescriptions for geotextiles.

A4 The type of mixtures shall bestated in item descriptions forcement and other hydraulicallybound pavements.

A5 The type of mixtures shall bestated for bituminous boundpavements.

C2 Items for cold milling /planning shall be deemed toinclude for disposal.

A6 Item descriptions for coldrecycled bound materials shallstate whether it is in situ orex situ.

75

CLASS R

76

CLASS R

FIRST DIVISION SECOND DIVISION THIRD DIVISION

5 Concrete pavements 1 Unreinforced concrete surfaceslabs m2

2 Jointed reinforced concretesurface slabs m2

3 Continuously reinforced concretesurface slabs m2

4 Continuously reinforced concretebase slabs m2

5 Wet lean concrete m2

1 Depth: not exceeding 30 mm2 30–60 mm3 60–100 mm4 100–150 mm5 150–200 mm6 200–250 mm7 250–300 mm8 exceeding 300 mm

6 Steel fabric reinforcement m2 1 Nominal mass:not exceeding 2 kg/m2

2 2–3 kg/m2

3 3–4 kg/m2

4 4–5 kg/m2

5 5–6 kg/m2

6 6–7 kg/m2

7 7–8 kg/m2

8 stated exceeding 8 kg/m2

7 Steel bar reinforcement t 1 Nominal size: 6 mm2 8 mm3 10 mm4 12 mm5 16 mm6 20 mm7 25 mm8 32 mm or greater

8 Separation and waterproofmembranes m2

6 Joints in concrete pavements m 1 Transverse joints2 Expansion joints3 Contraction joints4 Warping joints5 Longitudinal joints6 Construction joints

1 Depth of joint:not exceeding 30 mm

2 30–60 mm3 60–100 mm4 100–150 mm5 150–200 mm6 200–250 mm7 250–300 mm8 exceeding 300 mm

7 Kerbs, channels, edgings, footways and paved areas 1 Precast concrete kerbs2 Precast concrete channels3 Precast concrete edgings4 Asphalt kerbs

1 Straight or curved to radiusexceeding 12 m m

2 Curved to radius notexceeding 12 m m

3 Quadrants nr4 Drops nr5 Transitions nr

5 Precast concrete, natural stone,block and clay slabs and pavers m2

6 Flexible surfacing m2

7 In situ concrete surfacing m2

8 Grass concrete paving m2

8 Ancillaries 1 Traffic signs 1 Non-illuminated nr2 Illuminated nr

2 Surface markings 1 Non-reflecting road studs nr2 Reflecting road studs nr3 Letters and shapes nr4 Continuous lines m5 Intermittent lines m6 Raised rib m

MEASUREMENT RULES DEFINITION RULES COVERAGE RULES ADDITIONAL DESCRIPTIONRULES

A7 Item descriptions for wetlean concrete shall state the mix.

M3 The areas of additionalfabric reinforcement in laps shallnot be measured.

M4 The mass of steelreinforcement shall be taken as0.785 kg/m per 100 mm2 ofcross-section (7.85 t/m3). Themass of other reinforcingmaterials shall be taken as statedin the Contract.

M5 The mass of reinforcementmeasured shall include the massof steel supports to topreinforcement.

C3 Items for reinforcement shallbe deemed to include supportingreinforcement other than steelsupports to top reinforcement.

A8 Item descriptions for steelfabric reinforcement or size andmass per square metre.

A9 Item descriptions for steelbar reinforcements shall statethe type of reinforcement.

M6 The areas of additional inseparation and waterproofmembranes in laps shall not bemeasured.

A10 Item descriptions forseparation and waterproofmembranes shall state theirmaterials and thickness.

M7 Construction joints shall bemeasured only where they are atlocations where constructionjoints are expressly required.

A11 The dimensions, spacingand nature of sealed groovesand rebates, waterstops, dowelsand other components shall bestated in item descriptions forjoints in concrete pavements.

C4 Items for kerbs, channels andedgings shall be deemed toinclude beds, backings,reinforcement, joints and cutting.

C5 Item descriptions for kerbs,channels and edgings shall bedeemed to include for earthworksand concrete ancillaries.

C6 Items for precast concretenatural stone block and clay slabsand pavers shall be deemed toinclude for beds, joints andcutting.

C7 Items for flexible surfacing andin situ concrete surfacing shall bedeemed to include for beds andjoints.

C8 Items for grass concretepavings shall be deemed toinclude for beds, joints, soilingand seeding.

A12 Materials and cross-sectional dimensions of kerbs,channels and edgings and theirbeds and backings shall bestated in item descriptions

A13 The material, size andthickness for precast concretenatural stone block and clayslabs and pavers shall be statedin item descriptions.

A14 The materials andthicknesses for flexible surfacingin situ concrete surfacing andgrass concrete pavings shall bestated in item descriptions.

M8 The width of each course ofmaterials shall be measured atthe top surface of that course.The areas of manhole covers andother intrusions into a courseshall not be deducted where thearea of the intrusion is less than1 m2.

M9 Lengths measured for linearsurface markings shall excludegaps in intermittent markings.

M10 Items for support gantriesand other substantial structuresassociated with traffic signswhich are constructed inconcrete, structural metalworkor other materials shall be givenin the appropriate classes.

C9 Items for traffic signs otherthan traffic signs measured inaccordance with rule M10 shall bedeemed to include foundations,supporting posts, excavation,preparation of surfaces, disposalof excavated material, removal ofexisting services, upholding sidesof excavation, backfilling,concrete, reinforcement andjoints.

A15 The material, size and typeshall be stated in itemdescriptions for traffic signs andsurface markings.

A16 The shape and colour ofaspects shall be stated in itemdescriptions for reflecting roadstuds.

77

CLASS R

78

CLASS S: RAIL TRACK

Includes: Track foundations, rails, sleepers, fittings, switches and crossingsExcludes: Overhead crane rails (included in class M)

Concrete track foundations (included in classes F and G)

FIRST DIVISION SECOND DIVISION THIRD DIVISION

1 Track foundations 1 Bottom ballast m3

2 Top ballast m3

3 Blinding m2

4 Blankets and vibration mats m2

5 Waterproof membranes m2

6 Ballast cleaning m3

7 Tamping m8 Pneumatic ballast injection:

stone blowing m

2 Taking up 1 Bullhead rails2 Flat bottom rails3 Dock and crane rails

1 Plain track m2 Turnouts nr3 Diamond crossings nr

4 Check and guard rails m5 Conductor rails m

6 Sundries nr 1 Buffer stops nr2 Retarders nr3 Wheel stops nr4 Lubricators nr5 Switch heaters nr6 Switch levers nr7 Eutectic strip m

3 Lifting, packing and slewing and works to existingtrack nr

1 Bullhead rail track2 Flat bottom rail track3 Spot replacement of sleepers4 Existing rail turning and refixing5 Rerailing6 Stressing rail

1 Plane track m2 Plane track: with conductor rail m3 Plain track: with turnout nr4 Plain track: with conductor rail

and turnout nr5 Buffer stops

MEASUREMENT RULES DEFINITION RULES COVERAGE RULES ADDITIONAL DESCRIPTIONRULES

M1 The volume of top ballastmeasured shall include thevolume occupied by sleepers.

M2 The areas of additionalwaterproof membranes in lapsshall not be measured.

M3 Item descriptions for ballastcleaning shall state the depth ofmaterial to be cleaned and thecleaning material to be used tofill voids.

M4 Item description for tampingshall state the width of theballast to be tamped.

M5 Item description forpneumatic ballast injection shallstate the width of the ballast tobe treated.

D1 Bottom ballast shall beballast placed before the track islaid.

D2 Top ballast shall be ballastplaced after the track is laid.

C1 Items for ballast cleaning shallbe deemed to include theprovision of ballast to fill voids.

A1 Item descriptions for trackfoundations shall state the typeof material.

A2 Item descriptions forblinding, blankets, vibrationmats and waterproofmembranes shall state theirmaterial and thickness.

M6 The length of taking upplain track shall be measuredalong the centre line of the track(two rail) and shall excludelengths occupied by turnoutsand diamond crossings.

M7 The lengths of taking upcheck, guard and conductor railsshall be measured along thelengths of the rail (one rail) andshall exclude lengths withinturnouts and diamond crossings.

C2 Items for taking up turnoutsand diamond crossings shall bedeemed to include check, guardand conductor rails.

A3 Item descriptions for takingup track shall state the amountof dismantling, details ofdisposal of the track and thetype of rail, sleeper and joint.

A4 Item descriptions for takingup buffer stops shall state theirapproximate weight and type ofconstruction.

M8 The length of track stated initem descriptions for lifting,packing and slewing track shallbe the length measured alongthe centre line of the track (tworail) and shall be taken over allroads. Switch roads shall bemeasured from the toes ofswitches.

M9 The length track for rerailingstressing rail shall be the lengthof a single rail and excludelength of turnouts and crossings.

M10 Item descriptions for spotreplacement of sleepers shallstate the type of rail fixingsrequired and the method offixing to track and to thesleeper.

D3 Spot replacement of sleepersshall cover the replacement ofsleepers in track neither suppliednor laid by the contractor.

C3 Items for lifting, packing andslewing shall be deemed toinclude opening out, packing andboxing in with ballast andinsertion of closure rails.

C4 Items for spot replacement ofsleepers shall be deemed toinclude opening out of ballast,disposal of existing sleeper andreplacing ballast.

C5 Items for rerailing shall bedeemed to include for grinding,milling and planning.

C6 Items for spot replacement ofsleepers shall be deemed toinclude opening out of ballastremoving old sleeper, the supplyand laying of new sleepers andrepacking ballast.

A5 Item descriptions for lifting,packing and slewing shall statethe length of track, themaximum distance of slew andthe maximum lift.

A6 Where extra ballast isrequired item descriptions forlifting, packing and slewing shallso state.

A7 Items for spot replacementof sleepers shall state the typeof sleeper and type of fixing.

A8 Items for existing rail turningand refixing shall state the typeof rail and type of fixing.

A9 Items for rerailing shall statethe type of joints.

A10 Items for stressing rail shallstate when the work isrestressing.

79

CLASS S

80

CLASS S

FIRST DIVISION SECOND DIVISION THIRD DIVISION

4 Supplying 1 Bullhead rails t2 Flat bottom rails t3 Dock and crane rails t4 Check and guard rails t5 Conductor rails t6 Twist rails nr

1 Mass: not exceeding 20 kg/m2 20–30 kg/m3 30–40 kg/m4 40–50 kg/m5 exceeding 50 kg/m

7 Sleepers nr 1 Timber2 Concrete3 Steel

8 Fittings nr 1 Chairs2 Baseplates3 Pandrol rail fastenings4 Plain fishplates5 Insulated fishplates6 Conductor rail insulators7 Conductor rail side ramps

5 Supplying 1 Turnouts and crossings nr 1 Trap points nr2 Catch points nr3 Turnouts nr4 Diamond crossings nr

2 Sundries 1 Buffer stops nr2 Retarders nr3 Wheel stops nr4 Lubricators nr5 Switch heaters nr6 Switch levers nr7 Conductor rail guard boards m

3 Prefabricated track panels 18.288 mlong with rails and bearers m

1 Bullhead track: timber sleepers2 concrete sleepers3 steel sleepers4 Flat bottom track: timber sleepers5 concrete sleepers6 steel sleepers

4 Prefabricated turnouts andcrossings nr

1 Turnouts: type stated timberbearers

2 Turnouts: type stated concretebearers

3 Turnouts: type stated steelbearers

4 Diamond crossings: type statedtimber bearers

5 Diamond crossings: type statedconcrete bearers

6 Diamond crossings: type statedsteel bearers

6 Laying: with bearers on ballast 1 Bullhead rails2 Flat bottom rails3 Dock rails4 Crane rails

1 Plain track m2 Form curve in plain track

radius not exceeding 300 m m3 Form curve in plain track

radius exceeding 300 m m4 Turnouts nr5 Diamond crossings nr6 Welded joints nr

5 Check rails6 Guard rails7 Conductor rails

1 Rail m2 Length ends nr3 Side ramps nr4 Welded joints nr

MEASUREMENT RULES DEFINITION RULES COVERAGE RULES ADDITIONAL DESCRIPTIONRULES

M11 The mass measured forsupplying rails shall include themass of twist rails.M12 Fishplates shall bemeasured by the number ofpairs.

C7 Items for supplying shall bedeemed to include delivery ofcomponents to the Site.C8 Items for supplying sleepersshall be deemed to include fittingsattached by the supplier.C9 Items for supplying fittingsshall be deemed to include fixings,keys, clips, bolts, nuts, screws,spikes, ferrules, track circuitinsulators, pads and conductor railinsulator packings.

A11 Item descriptions forsupplying rails shall state eitherthe section reference and themass per metre or the cross-sectional dimension and themass per metre.A12 Item descriptions forsupplying sleepers and fittingsshall state the type.A13 Hollow sleepers shall beidentified in item descriptionsfor sleepers.A14 Items for supplying sleepersshall state the size of thesleepers and identify the fittingswhich are attached by thesupplier. Sleepers with integralducts for services shall be sodescribed.

M13 Conductor rail guardboards shall be measured eachside of the rail.

C10 Items for supplying shall bedeemed to include delivery ofcomponents to the Site.C11 Items for supplying turnoutsand diamond crossings shall bedeemed to include timbers,fittings and check rails.C12 Items for supplying conductorrail guard boards shall be deemedto include fixings.

A15 Item descriptions forsupplying prefabricated trackpanels shall state the length ofpanels.A16 Item descriptions forsupplying turnouts and crossingsshall state the type.A17 Item descriptions forsupplying sundries shall state thetype.A18 Item descriptions forsupplying buffer stops shall statetheir approximate weight.A19 Item descriptions forsupplying buffer stops shall statethe type and approximateweight.

M14 The length of laying plaintrack shall be measured alongthe centre line of the track (tworail) and shall include the lengthsoccupied by turnouts anddiamond crossings.M15 The lengths of layingcheck, guard and conductor railsshall be measured along thelengths of the rail (one rail).M16 Conductor rail guardboards shall be measured eachside of the rail.M17 Laying rails direct toconcrete bases shall bemeasured separately.

D4 Laying rails direct to concretebases shall be classed as slabtrack.

C13 Items for laying shall bedeemed to include work carriedout after delivery of componentsto the Site or, where track is notto be supplied by the Contractor,to the location stated inaccordance with rule A14.C14 Laying rails direct to concrete,slab track, shall be deemed toinclude fixings and pads.

A20 Item descriptions for layingrail track not supplied by thecontractor shall indentify theform in which it is to besupplied.A21 Item descriptions for layingprefabricated track shall identifypre-fabricated lengths.A22 Item descriptions for layingrails shall state the type andmass per metre of rail and thetype of joint and sleeper.A23 Item descriptions for layingprefabricated track panels shallstate the panel length.A24 Item descriptions for layingturnouts and diamond crossingsshall state their type and weight.A25 Item descriptions forwelded joints shall state the railsection and the type of weld.A26 Item descriptions for layingbuffer stops shall state theirapproximate weight.

81

CLASS S

82

CLASS S

FIRST DIVISION SECOND DIVISION THIRD DIVISION

7 Laying 1 Bullhead rails: slab track2 Flat bottom rails: slab track

1 Plain track m2 Form curve in plain track

radius not exceeding 300 m m3 Form curve in plain track

radius exceeding 300 m m4 Turnouts nr5 Diamond crossings nr6 Welded joints nr

3 Prefabricated track panels 1 Bullhead rail: timber sleepers m2 Bullhead rail: concrete sleepers m3 Flat bottom rail: timber sleepersm4 Flat bottom rail: concrete

sleepers m5 Flat bottom rail: steel sleepers m

4 Prefabricated turnouts and crossings:with bearers

1 Turnouts: timber bearers nr2 Turnouts: concrete bearers nr3 Turnouts: steel bearers nr4 Diamond crossings: timber

bearers nr5 Diamond crossings: concrete

bearers nr6 Diamond crossings: steel

bearers nr

5 Sundries 1 Buffer stops nr2 Retarders nr3 Wheel stops nr4 Lubricators nr5 Switch heaters nr6 Switch levers nr7 Conductor rail guard boards m8 Static sander nr9 Eutectic strip m

MEASUREMENT RULES DEFINITION RULES COVERAGE RULES ADDITIONAL DESCRIPTIONRULES

M14 The length of laying plaintrack shall be measured alongthe centre line of the track (tworail) and shall include the lengthsoccupied by turnouts anddiamond crossings.

M15 The lengths of layingcheck, guard and conductor railsshall be measured along thelengths of the rail (one rail).

M16 Conductor rail guardboards shall be measured eachside of the rail.

M17 Laying rails direct toconcrete bases shall bemeasured separately.

D4 Laying rails direct to concretebases shall be classed as slabtrack.

C13 Items for laying shall bedeemed to include work carriedout after delivery of componentsto the Site or, where track is notto be supplied by the Contractor,to the location stated inaccordance with rule A14.

C14 Laying rails direct to concrete,slab track, shall be deemed toinclude fixings and pads.

A20 Item descriptions for layingrail track not supplied by thecontractor shall indentify theform in which it is to besupplied.

A21 Item descriptions for layingprefabricated track shall identifypre-fabricated lengths.

A22 Item descriptions for layingrails shall state the type andmass per metre of rail and thetype of joint and sleeper.

A23 Item descriptions for layingprefabricated track panels shallstate the panel length.

A24 Item descriptions for layingturnouts and diamond crossingsshall state their type and weight.

A25 Item descriptions forwelded joints shall state the railsection and the type of weld.

A26 Item descriptions for layingbuffer stops shall state theirapproximate weight.

83

CLASS S

84

CLASS T: TUNNELS

Includes: Excavation, lining and securing of tunnels, shafts and other subterranean cavitiesExcludes: Geotechnical processes carried out from the ground surface (included in class C)

Filling within tunnels (included in class E)Reinforcement in in situ lining (included in class G)Pipe laying in headings, tunnels and shafts (included in classes I, J, K and L)Cut and cover tunnels

FIRST DIVISION SECOND DIVISION THIRD DIVISION

1 Excavation 1 Tunnels in rock m3

2 Tunnels in other stated material m3

3 Shafts in rock m3

4 Shafts in other stated material m3

5 Other cavities in rock m3

6 Other cavities in other statedmaterial m3

1 Stated diameter: not exceeding2 m

2 2–3 m3 3–4 m4 4–5 m5 5–6 m6 6–7 m7 7–8 m8 exceeding 8 m

7 Excavated surfaces in rock m2

8 Excavated surfaces in other statedmaterial m2

MEASUREMENT RULES DEFINITION RULES COVERAGE RULES ADDITIONAL DESCRIPTIONRULES

M1 Tunnels constructed by cutand cover are excluded from thisclass. The earthworks, in situconcrete and other componentsof tunnels constructed by cutand cover shall be classedappropriately.

D1 Transitions, breakaways andintersections between tunnelsand shafts which include workoutside the normal profiles ofthe tunnels and shafts shall beclassed as other cavities.

A1 Where tunnelling work isexpressly required to beexecuted under compressed air,items shall be so described. Itemdescriptions shall state thegauge pressure in stages. Thefirst stage shall be gaugepressure not exceeding 1 bar.Subsequent stages shall begauge pressures in incrementsof 0.4 bars. The provision andoperation of plant and servicesassociated with the use ofcompressed air shall be classedas specified requirements inclass A.

A2 Item descriptions forexcavation and lining of othercavities shall identify the cavity.

M2 The volume measured forexcavation shall be calculated tothe payment lines shown on theDrawings or, where no paymentlines are shown, to the netdimensions of the volumes to beexcavated. Excavation (otherthan overbreak) outside thenormal cross-sectional profile oftunnels and shafts shall beclassed as excavation of othercavities.

M3 An isolated volume of rockoccurring within other materialto be excavated shall not bemeasured separately unless itsvolume exceeds 0.25 m3.

M4 The area measured forexcavated surfaces shall be thearea of the payment surfacesshown on the Drawings or,where no payment surfaces areshown, the net areas of thesurfaces of the volumes to beexcavated.

D2 The diameter used forclassification and stated in itemdescriptions shall be the externaldiameter of the excavation cross-section of tunnels, shafts andother cavities.

C1 Items for excavation shall bedeemed to include disposal ofexcavated material off the Siteand removal of dead servicesunless otherwise stated in itemdescriptions.

A3 Item descriptions forexcavation shall state whethertunnels and shafts are straight,curved or tapered. Itemdescriptions for excavation shallstate the gradient of tunnelssloping at a gradient of 1 in 25or steeper and the inclination tothe vertical of inclined shafts.

A4 Where material is fordisposal on the Site the locationof the disposal areas shall bestated in item descriptions forexcavation. Where excavatedmaterial is to be used as filling,item descriptions shall so state.

A5 Details of filling for voidscaused by overbreak shall bestated in item descriptions forexcavated surfaces.

A6 Where tunnels, shafts andother cavities are not of circularcross-section, their maximumexternal dimension of cross-section shall be substituted forthe diameter and their externalcross-sectional dimensions shallbe stated in item descriptions.

85

CLASS T

86

CLASS T

FIRST DIVISION SECOND DIVISION THIRD DIVISION

2 In situ lining to tunnels3 In situ lining to shafts4 In situ lining to other cavities

1 Sprayed concrete primary m2

2 Sprayed concrete secondary m2

3 Cast concrete primary m3

4 Cast concrete secondary m3

5 Formwork to stated finish m2

1 Stated diameter: not exceeding2 m

2 2–3 m3 3–4 m4 4–5 m5 5–6 m6 6–7 m7 7–8 m8 exceeding 8 m

5 Preformed segmental lining to tunnels6 Preformed segmental lining to shafts7 Preformed segmental lining to other cavities

1 Precast concrete bolted rings nr2 Precast concrete expanded rings nr3 Cast iron bolted rings nr4 Cast iron expanded rings nr5 Nodular iron rings nr6 Fabricated steel rings nr

7 Lining ancillaries 1 Parallel circumferentialpacking nr

2 Tapered circumferentialpacking nr

3 Stepped junctions nr4 Caulking of stated material m

MEASUREMENT RULES DEFINITION RULES COVERAGE RULES ADDITIONAL DESCRIPTIONRULES

M5 The thickness of in situ liningshall be measured to thepayment lines shown on theDrawings or, where no paymentlines are shown, to the netdimensions of the volumes to belined (see rule M2).

M6 The volume of in situ castconcrete lining shall becalculated as set out in class F.

M7 The measurement unit forpacking shall be the number ofrings of segments packed.

D3 Reinforcing materials addedto the mix for sprayed concreteshall not be classed asreinforcement.

D4 The diameter of lining usedfor classification and stated initem descriptions shall be theinternal diameter.

C2 Items for lining shall bedeemed to include joints andfinishes.

C3 Items for preformed lining shallbe deemed to includereinforcement and formwork.

A7 Item descriptions for liningshall state whether tunnels andshafts are straight, curved ortapered. Item descriptions forlining shall state the gradient oftunnels sloping at a gradient of1 in 25 or steeper and theinclination to the vertical ofinclined shafts.

A8 Item descriptions for in situlining shall state thespecification of the concrete andwhether it is reinforced andidentify those linings which areto form head walls, shaftbottoms and other similarcomponents. Item descriptionsfor sprayed concrete lining shallstate the minimum thickness.

A9 Item descriptions forpreformed segmental liningrings shall identify thecomponents of each ring andstate the nominal ring widthand the maximum piece weight.

A10 Item descriptions forpreformed segmental lining inpilot tunnels or shafts shall sostate. Where the materials usedin preformed segmental lining topilot tunnels and shafts are toremain the property of theemployer item descriptions shallso state.

A11 Item descriptions forprecast concrete segmentallining rings shall state whetherthe segments are flanged orsolid. Item descriptions for metalsegmental lining rings whichhave machined abuttingsurfaces shall so state.

A12 The internal diameter ofthe lining shall be stated in itemdescriptions for lining ancillaries.

A13 Where linings are not ofcircular cross-section theirmaximum internal dimension ofcross-section shall be substitutedfor the diameter and theirinternal cross-sectionaldimensions shall be stated initem descriptions.

87

CLASS T

88

CLASS T

FIRST DIVISION SECOND DIVISION THIRD DIVISION

8 Support and stabilization 1 Rock bolts m 1 Mechanical2 Mechanical grouted3 Pre-grouted impacted4 Chemical end anchor5 Chemical grouted6 Chemically filled

2 Internal support 1 Steel arches: supply t2 erection t3 Timber supports: supply m3

4 erection m3

5 Lagging m2

6 Sprayed concrete m2

7 Mesh or link m2

3 Pressure grouting 1 Sets of drilling and groutingplant nr

2 Face packers nr3 Deep packers of stated size nr4 Drilling and flushing to stated

diameter m5 Re-drilling and flushing m6 Injection of grout materials of

stated composition t

4 Forward probing m

NOTE

Concrete work in lining to tunnels, shafts and other cavities which involves other than simple shapes may be classed as concrete (class F) andconcrete ancillaries (class G).

MEASUREMENT RULES DEFINITION RULES COVERAGE RULES ADDITIONAL DESCRIPTIONRULES

M8 Both temporary andpermanent support andstabilization shall be measured.

M9 The mass measured for steelarches shall be calculated as setout in class M. The volume oftimber support measured shallbe the volume of support intimber components calculated asset out in class O. The area ofsprayed concrete support shallbe measured at the paymentlines shown on the Drawings or,where no payment lines areshown, to the net dimensions ofthe support to be provided.

M10 The number of facepackers and deep packersmeasured shall be the number ofinjections.

M11 The mass measured forinjection of grout materials shallnot include the mass of mixingwater.

D3 Reinforcing materials addedto the mix for sprayed concreteshall not be classed asreinforcement.

D5 Mesh or link reinforcementin sprayed concrete support shallbe classed as mesh or linksupport.

C4 Items for face packers shall bedeemed to include collaring,securing and making good liningson completion.

A14 Item descriptions for rockbolts shall state their size, type,shank detail and maximumlength.

A15 The materials used forlagging and for packing orgrouting behind lagging shall bestated in item descriptions.

A16 Item descriptions forsprayed concrete support shallstate the specification of theconcrete and whether it isreinforced and the minimumthickness. Item descriptions formesh or link support shall statethe size and mass of mesh orlink fabric.

A17 The lengths of holes shallbe stated in stages of 5 m initem descriptions for drilling andre-drilling holes for pressuregrouting and in itemdescriptions for forwardprobing.

89

CLASS T

90

CLASS U: BRICKWORK, BLOCKWORK AND MASONRY

Excludes: Brickwork in manholes and other brickwork incidental to pipework (included in class K)Brickwork in sewer renovation (included in class Y)

FIRST DIVISION SECOND DIVISION THIRD DIVISION

1 Common brickwork2 Facing brickwork3 Engineering brickwork4 Lightweight blockwork5 Dense concrete blockwork6 Artificial stone blockwork7 Ashlar masonry8 Rubble masonry

1 Thickness: not exceeding150 mm m2

2 150–250 mm m2

3 250–500 mm m2

4 500 mm–1 m m2

5 exceeding 1 m m2

1 Vertical straight walls2 Vertical curved walls3 Battered straight walls4 Battered curved walls5 Vertical facing to concrete6 Battered facing to concrete7 Casing to metal sections

6 Columns and piers of stated cross-sectional dimensions m

7 Surface features 1 Copings and sills, materialstated m

2 Rebates and chases m3 Cornices m4 Band courses m5 Corbels m6 Pilasters m7 Plinths m8 Fair facing m2

MEASUREMENT RULES DEFINITION RULES COVERAGE RULES ADDITIONAL DESCRIPTIONRULES

M1 Each skin of brickwork,blockwork or masonry which isin cavity or compositeconstruction shall be measured.

M2 Volumes and areasmeasured for brickwork,blockwork and masonry shallinclude the volumes and areas ofjoints, and exclude those ofcopings and sills. No deductionfrom or addition to volumes andareas measured shall be madefor intruding or projectingsurface features. No deductionfrom the volumes and areasmeasured shall be made forholes and openings in walls orsurfaces each not exceeding0.25 m2 in cross-sectional area.

M3 Mean dimensions shall beused to calculate the areas andvolumes of walls, facing toconcrete and casing to metalsections and the heights ofcolumns and piers.

D1 Walls or facing battered onone or both sides shall beclassed as battered walls orbattered facing.

D2 Isolated walls having a lengthon plan not exceeding four timestheir thickness shall be classed aspiers.

D3 In determining thethicknesses of walls, facing andcasing, the presence of surfacefeatures shall be ignored.

D4 The thicknesses of batteredwalls shall be their meanthicknesses.

C1 Items for masonry shall bedeemed to include fair facing.

A1 Item descriptions for walls,facing to concrete, casing tometal sections, columns andpiers shall either state thematerials, nominal dimensionsand types of brick, block andstone or give equivalentreferences to applicable BritishStandard specifications.

A2 Item descriptions formasonry walls, facing toconcrete, casing to metalsections, columns and piers shallstate the surface finish.

A3 The bonding pattern, type ofmortar and type of jointing andpointing shall be stated in itemdescriptions for walls, facing toconcrete, casing to metalsections, columns and piers.

A4 Item descriptions for walls,facing to concrete, casing tometal sections, columns andpiers which are in cavity orcomposite construction shall sostate.

A5 The nominal thickness ofwalls, facing to concrete andcasing to metal sections shall bestated in item descriptions.

M4 The lengths of surfacefeatures measured shall be meanlengths. The areas measured forfair facing shall be thoseexpressly required and shall bemeasured at the face.

D5 Columns and piers attachedto walls or facing of the samematerial shall be classed aspilasters.

A6 Item descriptions for surfacefeatures shall include sufficientdetail to identify special masonryand special or cut bricks andblocks. The spacing ofintermittent surface featuresshall be stated in itemdescriptions.

A7 The cross-sectionaldimensions of surface featuresshall be stated in itemdescriptions where the cross-sectional area of the surfacefeature exceeds 0.05 m2.

91

CLASS U

92

CLASS U

FIRST DIVISION SECOND DIVISION THIRD DIVISION

8 Ancillaries 1 Joint reinforcement m2 Damp proof courses m3 Movement joints m4 Bonds to existing work m2

5 Infills of stated thickness m2

6 Fixings and ties m2

7 Built-in pipes and ducts, cross-sectional area: not exceeding0.05 m2 nr

8 stated exceeding 0.05 m2 nr

MEASUREMENT RULES DEFINITION RULES COVERAGE RULES ADDITIONAL DESCRIPTIONRULES

M5 The length of additionalmaterial in laps of jointreinforcement and damp proofcourses shall not be measured.

M6 The areas of fixings and tiesmeasured shall be the areas ofbrickwork, blockwork ormasonry fixed or tied. Wheretwo areas of brickwork,blockwork or masonry are fixedor tied to each other, only thesmaller of the two areas shall bemeasured.

C2 Items for built-in pipes andducts shall be deemed to includetheir supply unless otherwisestated.

A8 The materials anddimensions of jointreinforcement and damp proofcourses, the materials of infillsand the type and spacing offixings and ties shall be stated initem descriptions.

A9 The dimensions and natureof components including face orinternal details shall be stated initem descriptions for movementjoints.

A10 The lengths of built-inpipes and ducts shall be statedin item descriptions where theyexceed 1 m.

93

CLASS U

94

CLASS V: PAINTING

Includes: In situ paintingExcludes: Painting carried out prior to delivery of components to the Site

FIRST DIVISION SECOND DIVISION THIRD DIVISION

1 Iron or zinc based primer paint2 Etch primer paint3 Oil paint4 Alkyd gloss paint5 Emulsion paint6 Cement paint7 Epoxy or polyurethane paint8 Bituminous or coal tar paint

1 Metal, other than metal sections andpipework

2 Timber3 Smooth concrete4 Rough concrete5 Masonry6 Brickwork and blockwork

1 Upper surfaces inclined at anangle not exceeding 308 to thehorizontal m2

2 Upper surfaces inclined at308–608 to the horizontal m2

3 Surfaces inclined at an angleexceeding 608 to thehorizontal m2

4 Soffit surfaces and lowersurfaces inclined at an anglenot exceeding 608 to thehorizontal m2

6 Surfaces of width notexceeding 300 mm m

7 Surfaces of width300 mm–1 m m

8 Isolated groups of surfaces nr

7 Metal sections m2

8 Pipework m2

NOTE

Painting may be measured by the number of isolated groups of surfaces of the same shape and dimensions instead of by the length orarea of the separate surfaces.

MEASUREMENT RULES DEFINITION RULES COVERAGE RULES ADDITIONAL DESCRIPTIONRULES

M1 No deduction from the areasmeasured shall be made forholes and openings in thepainted surfaces each notexceeding 0.5 m2 in area.

C1 Items for painting shall bedeemed to include preparation ofsurfaces before painting.

A1 Item descriptions forpainting shall state the materialused and either the number ofcoats or the film thickness.

A2 Preparation of surfaces shallbe identified in item descriptionswhere more than one type ofpreparation is specified for thesame surface.

M2 Surfaces of width notexceeding 1 m shall not bedistinguished by inclination.

M3 Isolated groups of surfacesof different shape or dimensionsshall be measured as separateitems.

D1 Isolated groups of surfacesshall be classed as such onlywhere the total surface area ofeach group does not exceed6 m2.

A3 Item descriptions for isolatedgroups of surfaces shall identifythe work to be painted and itslocation.

M4 In calculating the paintedarea of metal sections thepresence of connecting plates,brackets, rivets, bolts, nuts andsimilar projections shall beignored.

M5 The area measured forpainting pipework shall be thelength multiplied by the girth ofeach length of pipe or laggedpipe with no deductions oradditions for flanges, valves,other projecting fittings andhangers.

C2 Painting of metal sections shallbe deemed to include painting thesurfaces of connecting plates,brackets, rivets, bolts, nuts andsimilar projections.

C3 Painting of pipework shall bedeemed to include painting thesurfaces of flanges, valves, otherprojecting fittings and hangers.

95

CLASS V

96

CLASS W: WATERPROOFING

Includes: Damp proofing, tanking and roofingExcludes: Waterproofed joints (included in classes C, G, H, I, J, K, R, T, U, X and Y)

Damp proof courses in brickwork, blockwork and masonry (included in class U)Surface finishes and linings in simple building works incidental to civil engineering works (included in class Z)

FIRST DIVISION SECOND DIVISION THIRD DIVISION

1 Damp proofing2 Tanking3 Roofing

1 Asphalt2 Sheet metal3 Waterproof sheeting4 Waterproof coating5 Rendering in ordinary cement mortar6 Rendering in waterproof cement

mortar7 Tiles

1 Upper surfaces inclined at anangle not exceeding 308 tothe horizontal m2

2 Upper surfaces inclined at308–608 to the horizontal m2

3 Surfaces inclined at an angleexceeding 608 to thehorizontal m2

4 Curved surfaces m2

5 Domed surfaces m2

6 Surfaces of width notexceeding 300 mm m

7 Surfaces of width300 mm–1 m m

8 Isolated groups of surfaces nr

4 Protective layers 1 Sand asphalt2 Flexible sheeting3 Sand4 Sand and cement screed5 Tiles

1 Upper surfaces inclined at anangle not exceeding 308 tothe horizontal m2

2 Upper surfaces inclined at308–608 to the horizontal m2

3 Surfaces inclined at an angleexceeding 608 to thehorizontal m2

4 Curved surfaces m2

5 Domed surfaces m2

6 Surfaces of width notexceeding 300 mm m

7 Surfaces of width300 mm–1 m m

8 Isolated groups of surfaces nr

5 Sprayed or brushed waterproofing m2

6 Sheet linings membrane 1 Butyl rubber2 EPDM rubber3 PVC4 Polypropylene5 Polyethylene6 Polyurethane7 Proprietary system

1 Upper surfaces inclined at anangle not exceeding 308 tothe horizontal m2

2 Upper surfaces inclined at308–608 to the horizontal m2

3 Surfaces inclined at an angleexceeding 608 to thehorizontal m2

4 Curved surfaces m2

5 Domed surfaces m2

6 Surfaces of width notexceeding 300 mm m

7 Surfaces of width300 mm–1 m m

8 Isolated groups of surfaces nr

NOTE

Waterproofing may be measured by the number of isolated groups of surfaces of the same shape and dimensions instead of by the lengthor area of the separate surfaces.

MEASUREMENT RULES DEFINITION RULES COVERAGE RULES ADDITIONAL DESCRIPTIONRULES

M1 The areas measured shall bethose of the surfaces covered.No deduction from the areasmeasured shall be made forholes and openings in thewaterproofed surfaces each notexceeding 0.5 m2 in area.

C1 Items for waterproofing shallbe deemed to include preparingsurfaces, forming joints, overlaps,mitres, angles, fillets, built-upedges and laying to falls orcambers.

A1 Item descriptions forwaterproofing shall state thematerials used and the numberand thickness of coatings orlayers.

M2 Surfaces of width notexceeding 1 m shall not bedistinguished by inclination or bycurvature.

M3 Waterproofing classed as tocurved or domed surfaces shallnot be distinguished byinclination.

D1 Waterproofing shall beclassed as to curved or domedsurfaces only where a radius ofcurvature of the surface is lessthan 10 m.

M4 Isolated groups of surfacesof different shape or dimensionsshall be measured as separateitems.

D2 Isolated groups of surfacesshall be classed as such onlywhere the total surface area ofeach group does not exceed6 m2.

A2 Item descriptions for isolatedgroups of surfaces shall identifythe work to be waterproofedand state its location.

M2 Surfaces of width notexceeding 1 m shall not bedistinguished by inclination or bycurvature.

M3 Waterproofing classed as tocurved or domed surfaces shallnot be distinguished byinclination.

D1 Waterproofing shall beclassed as to curved or domedsurfaces only where a radius ofcurvature of the surface is lessthan 10 m.

M4 Isolated groups of surfacesof different shape or dimensionsshall be measured as separateitems.

D2 Isolated groups of surfacesshall be classed as such onlywhere the total surface area ofeach group does not exceed6 m2.

A2 Item descriptions for isolatedgroups of surfaces shall identifythe work to be waterproofedand state its location.

97

CLASS W

98

CLASS X: MISCELLANEOUS WORK

Includes: Fences, gates and their foundationsDrainage to structures above groundRock filled gabions

FIRST DIVISION SECOND DIVISION THIRD DIVISION

1 Fences m 1 Timber post and rail2 Timber post and wire3 Concrete post and wire4 Metal post and wire5 Coated metal post and wire6 Timber close boarded7 Metal guard rails8 Road restraint system

1 Height: not exceeding 1 m2 1–1.25 m3 1.25–1.5 m4 1.5–2 m5 2–2.5 m6 2.5–3 m7 exceeding 3 m

2 Gates and stiles nr 1 Timber gates2 Metal gates3 Stiles

1 Width: not exceeding 1.5 m2 1.5–2 m3 2–2.5 m4 2.5–3 m5 3–4 m6 4–5 m7 exceeding 5 m

3 Drainage to structures above ground 1 Mild steel2 Cast iron3 Plastics

1 Gutters m2 Fittings to gutters nr3 Downpipes m4 Fittings to downpipes nr

4 Rock filled gabions 1 Box of stated size nr2 Mattress of stated thickness m2

5 Open cell block systems nr

MEASUREMENT RULES DEFINITION RULES COVERAGE RULES ADDITIONAL DESCRIPTIONRULES

M1 Lengths of fences shallexclude lengths occupied bygates and stiles.

D1 The heights used forclassification of fences shall bemeasured from the CommencingSurface.

C1 Items for fences shall bedeemed to include excavation,preparation of surfaces, disposalof excavated material, upholdingsides of excavation, backfilling,removal of existing services,concrete, formwork andreinforcement.

C2 Items for fences shall bedeemed to include end posts,angle posts, straining posts andgate posts.

A1 Item descriptions for fenceswhich are erected to a curve ofradius not exceeding 100 m oron a surface inclined at an angleexceeding 108 shall so state.

A2 The types and principaldimensions of fences and oftheir foundations shall be statedin item descriptions.

D2 The width used forclassification of gates and stilesshall be measured between theinside faces of posts.

A3 The types and principaldimensions of gates and stilesshall be stated in itemdescriptions.

A4 Item descriptions for gatescomposed of more than oneleaf shall identify the number ofleaves in item descriptions.

D3 Fittings to gutters shallinclude bends, angles, stop endsand outlets. Fittings todownpipes shall include bends,swan necks, shoes and roofoutlets fixed directly todownpipes.

C3 Items for drainage tostructures above ground shall bedeemed to include supports.

A5 Item descriptions fordrainage to structures aboveground shall state the type,principal dimensions andmaterials of the components.

D4 Rock filled gabions exceeding300 mm thick shall be classed asbox gabions and those notexceeding 300 mm thick asmattress gabions. Filling shall bedeemed to be imported unlessotherwise stated.

A6 Item descriptions for rockfilled gabions shall state the typeand grading of filling, the size ofmesh and the diameter of meshwire. Details of protectivecoatings shall be stated.

A7 The material, cross sectiontype and principal dimensions ortype shall be stated for open cellblock systems.

99

CLASS X

100

CLASS Y: SEWER AND WATER MAIN RENOVATION AND ANCILLARY WORKS

Includes: Preparation and renovation of existing sewers and water mainsNew manholes within the length of existing sewersWork to existing manholes

Excludes: Grouting carried out from outside the sewer (included in class C)New pipework (included in classes I–L)New fittings and valves used in water main renovation (included in class J)Extras to excavation and backfilling for new manholes and other chambers (included in class L)

FIRST DIVISION SECOND DIVISION THIRD DIVISION

1 Preparation of existing sewers 1 Cleaning m

2 Removing intrusions nr 1 Laterals, bore not exceeding150 mm

2 Laterals, stated profile and sizeexceeding 150 mm in one ormore dimension

3 Other stated artificial intrusions

3 Closed-circuit television surveys m

4 Plugging laterals, materials stated nr5 Filling laterals and other pipes,

materials stated m3

1 Bore not exceeding 300 mm2 Stated profile and size exceeding

300 mm in one or moredimension

6 Local internal repairs nr 1 Area: not exceeding 0.1 m2

2 0.1–0.25 m2

3 stated exceeding 0.25 m2

2 Stabilization of existing sewers 1 Pointing, materials stated m2

2 Pipe joint sealing, materialsstated nr

3 External grouting 1 Number of holes nr2 Injection of grout, materials

stated m3

MEASUREMENT RULES DEFINITION RULES COVERAGE RULES ADDITIONAL DESCRIPTIONRULES

M1 Lengths of sewers shall bemeasured along their centre linesbetween the inside surfaces ofmanholes but shall excludelengths occupied by pipes andfittings comprising backdrops tomanholes.

M2 Where work is expresslyrequired to be carried out byexcavation, crossings,reinstatement and otherpipework ancillaries shall bemeasured in class K and extrasto excavation and backfillingshall be measured in class L.

C1 Items for work which isexpressly required to be carriedout by excavation shall be deemedto include preparation of surfaces,disposal of excavated material,upholding sides of excavation,backfilling and removal of deadservices.

A1 The location of the work ineach item or group of itemsshall be stated so that the workcan be identified by reference tothe Drawings.

A2 Principal dimensions andprofiles of sewers shall be statedin item descriptions.

A3 Work which is expresslyrequired to be carried outmanually or by remotelycontrolled methods shall eachbe so stated in itemdescriptions.

A4 Item descriptions shallidentify work which is expresslyrequired to be carried out byexcavation and (except formanholes) shall state themaximum depth of excavationin stages of 1 m measured tothe invert of the sewer or watermain.

A5 Item descriptions forpreparation, stabilization,renovation and laterals shallstate the material forming theexisting sewer or water main.

C2 Items for cleaning shall bedeemed to include making goodresultant damage.

D1 Items shall be classed asremoving intrusions whereintrusions into the bores ofexisting sewers are to beremoved prior to renovation.

C3 Items for removing intrusionsshall be deemed to includemaking good.

A6 Item descriptions forremoving intrusions shall statethe materials forming theintrusions.

D2 The areas stated in itemdescriptions for local internalrepairs shall be the finishedsurface areas.

C4 Items for local internal repairsshall be deemed to include cuttingout and repointing.

M3 No deduction shall be madefrom the areas of sewer surfacesmeasured for pointing foropenings or voids each notexceeding 0.5 m2 in area.

C5 Items for pointing and pipejoint sealing shall be deemed toinclude preparation of joints.

M4 External grouting shall bemeasured only where grouting isexpressly required to be carriedout as a separate operation fromannulus grouting (Y 3 6 0).

D3 External grouting shall begrouting of voids outside theexisting sewer from within theexisting sewer other than voidsgrouted in the course of annulusgrouting.

A7 Where external grouting iscarried out through pipe joints,descriptions of items for thenumber of holes shall so state.

101

CLASS Y

102

CLASS Y

FIRST DIVISION SECOND DIVISION THIRD DIVISION

3 Renovation of existing sewers 1 Sliplining m 1 Polyethylene2 Polypropylene

2 In situ jointed pipe lining m 1 Polyethylene2 Polypropylene3 Glass reinforced plastic

3 Segmental lining m 3 Glass reinforced plastic4 Glass reinforced concrete5 Cast gunite6 Resin concrete

4 Stated proprietary lining m

5 Gunite coating of stated thickness m

6 Annulus grouting, materialsstated m3

4 Laterals to renovated sewers 1 Jointing nr 1 Bore: not exceeding 150 mm2 150–300 mm3 Stated profile and size exceeding

300 mm in one or moredimension

2 Flap valves of stated size nr 1 Remove existing2 Replace existing3 New flap valve of stated type

5 Water main renovation and ancillary works 1 Cleaning m2 Removing intrusions nr3 Pipe sample inspections nr4 Closed-circuit television surveys m5 Cement mortar lining m6 Epoxy lining m

1 Nominal bore: not exceeding200 mm

2 200–300 mm3 300–600 mm4 600–900 mm5 900–1200 mm6 stated exceeding

1200 mm

6 New manholes nr 1 Brick2 Brick with backdrop3 In situ concrete4 In situ concrete with backdrop5 Precast concrete6 Precast concrete with backdrop

1 Depth: not exceeding 1.5 m2 1.5–2 m3 2–2.5 m4 2.5–3 m5 3–3.5 m6 3.5–4 m7 stated exceeding 4 m

7 Existing manholes nr 1 Abandonment

2 Alteration

8 Interruptions h 1 Preparation of existing sewers2 Stabilization of existing sewers

3 Renovation of existing sewers 1 Sliplining2 In situ jointed pipe lining3 Segmental lining4 Stated proprietary lining5 Gunite coating6 Annulus grouting

4 Work on laterals to renovated sewers5 Work on manholes

NOTE

Manholes may be measured in detail as set out in other classes of CESMM3.

MEASUREMENT RULES DEFINITION RULES COVERAGE RULES ADDITIONAL DESCRIPTIONRULES

A8 Item descriptions for slip-lining, in situ jointed pipe lining,segmental lining and statedproprietary lining shall state thetype of lining, its minimumfinished internal size and itsthickness or grade.

A9 Item descriptions for in situjointed pipe lining andsegmental lining shall state theoffset where the lining is curvedto an offset which exceeds35 mm per metre.

M5 The volume measured forannulus grouting shall notinclude the volume measured forexternal grouting (Y 2 3 2).

D4 Annulus grouting shall begrouting of the annular voidsbetween new linings andexisting sewers and of othervoids grouted in the course ofgrouting annular voids.

C6 Items for laterals shall bedeemed to include the workinvolved in connecting to thelining within 1 m from the insideface of the lined sewer.

A10 Item descriptions forjointing laterals shall state thetype of lining to which thelaterals are to be connected andidentify those laterals which areto be regraded.

M6 Lengths of water mains shallbe measured along their centrelines and shall include lengthsoccupied by fittings and valves.

D5 Pipe sample inspections andclosed-circuit television surveysshall include work carried outeither before or after cleaningand lining.

C7 Items for pipe sampleinspections shall be deemed toinclude replacing the lengthremoved by new pipework.

A11 Item descriptions for liningshall state the materials,nominal bores and thicknessesof the lining.

D6 The depth of manholes shallbe measured from the tops ofcovers to channel inverts or topsof base slabs, whichever is thelower.

C8 Items for new manholes shallbe deemed to include excavation,preparation of surfaces, disposalof excavated material, upholdingsides of excavation, backfilling,concrete, reinforcement,formwork, joints, finishes andreinstatement.

C9 Items for new manholes shallbe deemed to include all items ofmetalwork and pipework whichoccur within or at the surface ofthe manhole.

C10 Items for new manholes withbackdrops shall be deemed toinclude the pipes and fittingscomprising the backdrop.

C11 Items for new manholeswhich replace existing manholesshall be deemed to includebreaking out and disposal ofexisting manholes.

A12 Type or mark numbers shallbe stated in item descriptionsfor manholes of which detailsare given elsewhere in theContract. Item descriptions shallidentify different configurationsof manholes.

A13 Types and loading duties ofcovers shall be stated in itemdescriptions for new manholes.

A14 Item descriptions shallseparately identify newmanholes which replace existingmanholes.

A15 Item descriptions forexisting manholes shall statedetails of the work required.

M7 Interruptions shall bemeasured only where aminimum pumping capacity isexpressly required and forperiods of time during normalworking hours when the flow inthe sewer exceeds the installedpumping capacity and work isinterrupted.

103

CLASS Y

104

CLASS Z: SIMPLE BUILDING WORKS INCIDENTAL TO CIVIL ENGINEERING WORKS

Includes: Carpentry and joineryInsulationWindows, doors and glazingSurface finishes, linings and partitionsPiped building servicesDucted building servicesCabled building services

FIRST DIVISION SECOND DIVISION THIRD DIVISION

1 Carpentry and joinery 1 Structural and carcassing timber 1 Floors m2 Walls and partitions m3 Flat roofs m4 Pitched roofs m5 Plates and bearers m6 Struts m7 Cleats nr8 Trussed rafters and roof

trusses nr

2 Strip boarding m2

3 Sheet boarding m21 Floors2 Sloping upper surfaces3 Walls4 Soffits

4 Stairs and walkways nr 1 Stairways and landings2 Walkways and platforms3 Isolated balustrades4 Ladders

5 Miscellaneous joinery m 1 Skirtings2 Architraves3 Trims4 Shelves

6 Units and fittings nr 1 Base units2 Wall units3 Work tops4 Notice-boards

2 Insulation m2 1 Sheets2 Quilts3 Boards4 Loose fill

1 Floors2 Sloping upper surfaces3 Walls4 Soffits

3 Windows, doors and glazing 1 Timber nr2 Metal nr3 Plastics nr

1 Windows2 Window sub-frames3 Doors4 Frames or lining sets5 Screens and borrowed lights6 Roof lights

4 Ironmongery nr 1 Hinges2 Door closers3 Locks4 Bolts5 Handles6 Plates7 Brackets

Excludes: Drainage below ground (included in classes I–L)Ducts and trenches for electrical services below ground or outside the building (included in classes I–L)Metalwork (included in class N)Civil engineering timber works (included in class O)Brickwork, blockwork and masonry (included in class U)Painting (included in class V)Asphalt work (included in class W)Roofing, cladding and coverings (included in class W)Drainage to structures above ground (included in class X)

MEASUREMENT RULES DEFINITION RULES COVERAGE RULES ADDITIONAL DESCRIPTIONRULES

M1 The lengths and areasmeasured for carpentry andjoinery items shall be measurednet with no allowance for jointsor laps.

M2 No deduction from the areasmeasured shall be made forholes and openings each notexceeding 0.5 m2 in area.

M3 Struts between joists shall bemeasured on plan across joists.

D1 Sizes stated in itemdescriptions for carpentry andjoinery shall be nominal sizesunless otherwise stated.

D2 Ceiling joists shall be classedas pitched roofs where they areassociated with pitched roofs.

D3 Timber and othermanufactured boards shall beclassed as sheet boarding.

D4 Boarding and insulation shallbe classified according to theirangle of inclination as follows:

Surfaces of columns shall beclassed as walls. Surfaces ofbeams shall be classed as soffits.

C1 Items for carpentry and joineryshall be deemed to include fixing,boring, cutting, jointing, supply offixing components and drilling orcutting associated work.

A1 Item descriptions forcarpentry and joinery shall statethe materials used and identifywhether they are sawn orwrought and any treatment,selection or protection forsubsequent treatment.

A2 Item descriptions shall statethe nominal thickness ofboarding.

A3 The width of boarding shallbe stated in item descriptions in100 mm stages where it doesnot exceed 300 mm.

A4 Item descriptions forstructural and carcassing timber(other than cleats, rafters andtrusses) and miscellaneousjoinery shall state the overallnominal gross cross-sectionaldimensions and the number ofdifferent cross-section shapeswhere there are more than one.

A5 Item descriptions shallidentify applied laminates andcoverings.

A6 Item descriptions shallidentify the shape, size andlimits of stairs and walkwaysand units and fittings.

A7 Item descriptions forinsulation shall state thematerials and their overallnominal thickness.

C2 Items for windows, doors andglazing shall be deemed to includefixing, supply of fixingcomponents and drilling or cuttingof associated work.

A8 Item descriptions forwindows, doors and glazing (Z 31-3 *) shall identify the shape,size and limits of the work.

A9 Materials shall be stated initem descriptions forironmongery.

105

CLASS Z

Class Angle ofinclination tothe vertical

FloorsSlopinguppersurfacesWallsSoffits

758–908158–758Not exceeding158158–908

106

CLASS Z

FIRST DIVISION SECOND DIVISION THIRD DIVISION

5 Glazing 1 Glass m2

2 Glass in large panes m2

3 Special glass nr4 Hermetically sealed units nr5 Mirrors nr

6 Patent glazing m2 1 Roofs2 Opening lights3 Vertical surfaces

4 Surface finishes, linings and partitions 1 In situ finishes, beds and backings2 Tiles3 Flexible sheet coverings4 Dry partitions and linings

1 Floors m2

2 Sloping upper surfaces m2

3 Walls m2

4 Soffits m2

5 Surfaces of width notexceeding 300 mm m

6 Surfaces of width300 mm–1 m m

5 Suspended ceilings 1 Depth of suspension:not exceeding 150 mm m2

2 150–500 mm m2

3 exceeding 500 mm m2

4 Bulkheads m5 Access panels nr6 Fittings nr

6 Raised access floors m2

7 Proprietary system partitions 1 Solid m2 Fully glazed m3 Partially glazed m4 Door units nr

8 Framed panel cubicle sets nr

MEASUREMENT RULES DEFINITION RULES COVERAGE RULES ADDITIONAL DESCRIPTIONRULES

D5 Panes which exceed 4 m2

shall be classed as large panes.

D6 The following materials usedin glazing shall be classed asspecial glass

(a) glass whose thicknessexceeds 10 mm

(b) non-rectangular panes ofglass

(c) toughened, laminated, solarcontrol and other specialityglass

(d) acrylic, polycarbonate andsimilar materials.

C2 Items for windows, doors andglazing shall be deemed to includefixing, supply of fixingcomponents and drilling or cuttingof associated work.

A10 Item descriptions forglazing shall identify thematerials, their nominalthicknesses, the method ofglazing and the method ofsecuring the glass.

A11 Item descriptions shallidentify the construction ofhermetically sealed units.

A12 Item descriptions for specialglass, hermetically sealed unitsand mirrors shall identify theshape and size of panes.

A13 Item descriptions forglazing shall identify work whichis curved.

M2 No deduction from the areasmeasured shall be made forholes and openings each notexceeding 0.5 m2 in area.

M4 The areas measured forpatent glazing shall include areasoccupied by glazing bars.

A14 Item descriptions shallidentify the shape, size andlimits of patent glazing.

A15 Incidental metalworksupporting patent glazing shallbe identified in itemdescriptions.

A16 Item descriptions for patentglazing shall identify work whichis curved.

M2 No deduction from the areasmeasured shall be made forholes and openings each notexceeding 0.5 m2 in area.

M5 The length measured forproprietary system partitionsshall exclude the length of voidswhich extend to the full heightof the partition.

D7 Surface finishes, linings andpartitions (Z 4 1-4 *) exceeding1 m wide shall be classifiedaccording to their angle ofinclination as follows:

Surface of columns exceeding1 m wide shall be classed aswalls. Surfaces of beamsexceeding 1 m wide shall beclassed as soffits.

C3 Items for surface finishes,linings and partitions shall bedeemed to include fixing, supplyof fixing components and drillingor cutting of associated work.

C4 Items for surface finishes,linings and partitions shall bedeemed to include preparingsurfaces, forming joints, mitres,angles, fillets, built-up edges andlaying to cambers or falls.

C5 Items for surface finishes,linings and partitions shall bedeemed to include forming holes,cutting and making good forservices.

C6 Items for suspended ceilingsshall be deemed to includeassociated primary supportsystems and edge trims.

A17 The materials, surface finishand finished thickness shall beidentified in item descriptionsfor surface finishes, linings andpartitions.

A18 Lathing and baseboardingassociated with in situ finishes,bed and backings shall beidentified in item descriptions.

A19 The girth of bulkheads shallbe identified in itemdescriptions.

A20 The overall dimensions ofaccess panels and fittings inceilings, door units in proprietarysystem partitions and framedpanel cubicle sets shall beidentified in item descriptions.

A21 Item descriptions forsuspended ceilings shall statethe depth of the suspensionwhere it exceeds 500 mm instages of 500 mm.

107

CLASS Z

Class Angle ofinclination tothe vertical

FloorsSlopinguppersurfacesWallsSoffits

758–908158–758Not exceeding158158–908

108

CLASS Z

FIRST DIVISION SECOND DIVISION THIRD DIVISION

5 Piped building services 1 Pipework 1 Pipes m2 Fittings nr3 Insulation m

2 Equipment nr 1 Boiler plant and ancillaries2 Convectors and radiators3 Pumps4 Cisterns and tanks

3 Sanitary appliances and fittings nr

6 Ducted building services 1 Circular ductwork2 Rectangular ductwork

1 Straight m2 Curved m3 Fittings nr4 Insulation m

3 Equipment nr 1 Conditioning and handling units2 Heaters3 Fans4 Filters

MEASUREMENT RULES DEFINITION RULES COVERAGE RULES ADDITIONAL DESCRIPTIONRULES

M6 Lengths of pipes shall bemeasured along their centre linesand shall include lengthsoccupied by fittings.

D8 Taps shall be classed as pipefittings.

C7 Items for piped servicessystems shall be deemed toinclude fixing and supply of fixingcomponents.

C8 Items for piped servicessystems shall be deemed toinclude commissioning.

A22 The location or type ofpiped building services in eachitem or group of items shall bestated in item descriptions sothat the work included can beidentified by reference to theDrawings.

A23 The materials, joint types,and nominal bores of pipeworkshall be stated in itemdescriptions and reference givento applicable specifications andspecified qualities. Fittings onpipes of different nominal boresshall be identified by their largerbore.

A24 The type of equipment orsanitary appliances and fittingsand the materials, size orcapacity, and the method offixing shall be stated in itemdescriptions and reference givento applicable specifications andspecified qualities.

A25 Traps shall be identified initem descriptions for sanitaryappliances and fittings.

M7 Lengths of ducted servicessystems shall be measured alongtheir centre lines and shallinclude lengths occupied byfittings.

C9 Items for ducted buildingservices shall be deemed toinclude fixing and supply of fixingcomponents.

C10 Items for ducted buildingservices shall be deemed toinclude commissioning.

A26 The location or type ofducted building services in eachitem or group of items shall bestated in item descriptions sothat the work included can beidentified by reference to theDrawings.

A27 The materials, joint types,and size of ductwork shall bestated in item descriptions andreference given to applicablespecifications and specifiedqualities. Fittings on ducts ofdifferent sizes shall be identifiedby their largest size.

A28 The type of equipment andthe materials, size or capacity,and the method of fixing shallbe stated in item descriptionsand reference given toapplicable specifications andspecified qualities.

109

CLASS Z

110

CLASS Z

FIRST DIVISION SECOND DIVISION THIRD DIVISION

7 Cabled building services 1 Cables m 1 Laid or drawn into conduits,trunking or ducts

2 Laid on trays3 Fixed to surfaces4 Laid in trenches5 Suspended

2 Conduits 1 Plain m2 Flexible m3 Box fittings nr

3 Trunking4 Busbar trunking5 Trays

1 Plain m2 Fittings nr

6 Earthing and bonding 1 Tapes m2 Fittings nr

7 Final circuits nr 1 Cable only2 Cable and conduit

8 Equipment and fittings nr 1 Equipment2 Switches3 Lighting outlets4 Sockets

NOTE

Windows and their sub-frames (Z 3 1-3 1-2), doors and their frames or lining sets (Z 3 1-3 3-4) and the associated ironmongery may be included inthe measurement of doors or windows provided that the work included is identified in item descriptions in accordance with paragraph 5.12 andthe appropriate statements are given in the Preamble in accordance with paragraph 5.4.

NOTE

Taps may be included in item descriptions for sanitary appliances and fittings instead of by separate items for pipe fittings provided that the workincluded is identified in item descriptions in accordance with paragraph 5.12 and the appropriate statements are given in the Preamble inaccordance with paragraph 5.4.

MEASUREMENT RULES DEFINITION RULES COVERAGE RULES ADDITIONAL DESCRIPTIONRULES

M8 Lengths measured for cablesshall exclude lengths occupied insags and tails.

M9 Lengths measured forconduits, trunking, busbartrunking and cable trays shallinclude lengths occupied byfittings.

M10 Lengths measured forcables laid or drawn intoconduits, trunking or ducts orlaid on trays shall be measuredas the length of conduit,trunking, duct or tray.

D9 Simple low voltage powerand lighting circuits which loopfrom distribution boards shall beclassed as final circuits.

C11 Items for cabled buildingservices shall be deemed toinclude determining circuits,terminations and connections,providing draw wires and drawcables, cleaning trunking, ductsand trays and threading cablesthrough sleeves.

C12 Items for cabled buildingservices shall be deemed toinclude fixing and supply of fixingcomponents.

C13 Items for cabled buildingservices shall be deemed toinclude commissioning.

C14 Items for conduits shall bedeemed to include fittings otherthan boxed fittings.

A29 The location or type ofcabled building services in eachitem or group of items shall bestated in item descriptions sothat the work included can beidentified by reference to theDrawings.

A30 The materials, size orcapacity, and method of fixingshall be identified in itemdescriptions for cabled buildingservices (Z 7 1-7 *) andreference given to applicablespecifications and specifiedqualities.

A31 The type and size orcapacity of equipment andfittings (Z 7 8 *) shall be statedin item descriptions andreference given to applicablespecifications and specifiedqualities.

111

CLASS Z