Method Statements and Risk Assessment

Refurbishment Works at Walton Hall Riding School

Works to Underpinning of brick buttresses along north elevation

June 2017

Revision A

CONTENTS

1.0 Methodology

2.0 Method Statement for underpinning and piling – Total Piling Ltd

Appendix A - Photographic record of condition of buttresses

Appendix B – Drawings

North Elevation with buttress references

Hand dig and piling location

Underground Services

Temporary Work J578-T01

Appendix C - Programme

1.0 Methodology

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WALTON HALL RIDING SCHOOL METHODOLOGY FOR PILING

Preparation for piling

Set up/establish segregation/site fencing. Create access to canal side. Clear roof eaves of debris. Replace defective/missing purling in accordance with Drg No 3817-3 Install temporary work support as per drawing Ref J5278-T01. Remove unsafe masonry or detached wall and buttresses, in accordance with Drg 3817-5 and subject to confirmation prior commencement. Identify services/utilities and drainage by CAT scanning excavation areas and mark out. Secure or divert cables contained within high level tray. The above sequence of activities is indicated on the Walton Hall construction programme Rev 1. Install piles and beams

The estimated number and type of piles is 16x150mm, driven by a pneumatic, hand held Grundomat hammer and 8 cast in situ needle beams – ref Site Instruction Sheet. Work to be carried out

Driving preformed driven piles, including the following operations: 1. Unloading equipment and materials. 2. Driving piles. 3. Hand digging and breaking out for needle beams. 4. Fixing steel. 5. Concreting piles and beams.

Method 1. The piling equipment will generally be delivered to site in vans and trailers, but

access may be needed for articulated lorries.

2. Hand dig Excavations to minimise impact on tree roots.

3. We will set out the piles and beams by tape references from the buttresses as shown

on the engineers drawings.

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4. Grundomats’ are capable of driving 100mm, 150mm and 168mm diameter steel cased piles. The Grundomat is inserted into the starter tube, which is a welded tube with a crimped end and placed within an initial pack made up of 20mm aggregate so that the Grundomat bed’s in the casing in order to commence the piling.

5. The hose and safety line from the Grundomat is to be threaded through the predicted

amount of follower tubes. The hose in turn connects to the oiler bottle, which is used to increase or decrease the speed of the Grundomat. It is also used to introduce ice free lubricant oil into the Grundomat.

6. Once the starter tube is placed into the ground and is left projecting approximately

500mm the second tube, known as the follower is placed into the pre-swaged end of the starter tube and is then fully seam welded to make a watertight joint.

7. Successive tubes are added exactly as above until an acceptable set is achieved.

The set is usually better than 60mm for 1 minute, unless advised otherwise. This is dependent on the required safe working load of the pile.

8. Once the pile is installed to its full depth and refusals or the set is achieved, a lifting

winch frame is placed over the pile and the backing safety line is attached to an air winch, the Grundomat is then turned into its reverse mode and winched out of the casing.

9. On completion of the pile driving, the empty casings are filled with concrete to the

specification of the consulting engineer or 35 Newton designed mix. A T12 or T16 reinforcing bar is inserted to at least 3m leaving 0.5m protruding for tying into the beam or cap reinforcement cage.

Note: During the operation of driving the pile, at no point must the weight be allowed to be lifted clear of the pile tube. The weight must at all times remain inside the pile tube whilst the pile is under driving conditions.

Excavation for Needles

1. Excavation will be done by hand digging due to the state of the existing buttresses to the size and depth shown on the Engineer’s drawings.

2. Break out the masonry and old foundations where needed to construct the needle

beams. 3. When the excavation/breaking out is half complete a sacrificial permanent jack will be

placed under the foundation and tightened up to support the weight. 4. The excavation will be completed and the steel reinforcement fixed in place.

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Placing Concrete

We will probably use option 3 but may for operational reason use 1 or 2.

1. Placing Concrete with Barrow Mix Companies Concrete should be placed by the concrete company hired to provide the concrete. We should ensure a clear pathway to the placement site is maintained at all times and that a safe discharge point is maintained at all times. If any trench or excavation has to be traversed, suitable planking or youngman board should be provided.

2. Operatives Placing Concrete with Own Wheelbarrows

Concrete should be poured into wheelbarrow to the quantity so as not to overload the wheelbarrow or to an excess that the operative’s ability to comfortably handle it is affected. Manual handling rules are in force. We should ensure a clear pathway to the placement site is maintained at all times and a safe discharge point is maintained at all times. If any trench or excavation has to be traversed, suitable planking or youngman board should be provided.

3. Placing Concrete with Concrete Pumps

Concrete pump is to be hired in and set up for safe operation by the companies own pump operator. Place concrete pump delivery hose flat on the ground and slowly pump an adequate amount of concrete through to ensure there are no blockages. This operation should be done on the 1st load of concrete and on all following loads and most important, whilst there are no operatives in contact with or near to the delivery hose. Once it has been determined that there are no blockages, the pouring of concrete can proceed. Delivery hose should be controlled by the concrete pump operator with general assistance given by our operatives.

Emergency Plan

Employees will cooperate with the Client’s site representative in the implementation of procedures arising from the Site Emergency Plan. The procedure to access and provide first aid treatment for an injured person is stated in the Plan.

2.0 Method Statement for underpinning and piling – Total Piling Ltd

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Mini Piling and Underpinning Method Statement for

Link Contracting at Walton Hall Riding School, Warrington WA4 5LU

Produced PRB 26/05/2017

Scope of Work

The estimated number and type of piles is 16x150mm, driven by a pneumatic, hand held Grundomat hammer and 8 cast in situ needle beams – ref Site Instruction Sheet. Crew

Hurst Kurtis

Macdonald Danny 05485115 Specific Hazards Identified The risk assessments identified the following hazards as being particularly associated with the work – ref attached Site Safety Inspection Sheet

1. Underground obstructions and services. 2. Excavations. 3. Driving piles. 4. Fuelling and greasing plant. 5. Vibration damage. 6. Welding.

Employee Consultation Record

The following employees were consulted during the production of this Method Statement and the relevant Risk assessment. Name Signature Date

Signed: Philip Bates

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Method Statement produced by: Mr. P Bates Managing Director Total Piling Ltd Unit A2(5) Sandy Court, Moss Industrial Estate, Leigh, Lancs, WN7 3PT And Mr. S Geddes Safety Measures Ltd. Foxhall Lodge Foxhall Road Nottingham NG7 6LH Tel: 0115 911 0595 *Competent Person as defined by the Management of Health & Safety Regulations 1999 Responsible Person

Mr. Ian Rushworth is responsible for ensuring that the project is carried out safely and in accordance with all relevant health & safety legislation. He will ensure that all relevant information that may affect the safe undertaking of the project will be exchanged with the health & safety representative of the client/ or his representative. He will also ensure that all employees and sub-contractors (if appropriate) involved in the project will be consulted during completion of the risk assessment and will be briefed on all safety considerations affecting their work. Day to day responsibility for the activities of employees on site rests with our Site Supervisor. He will ensure that all employees under his control work safely and in accordance with Company, customer and local site rules. Any variation(s) to the final Method Statement can be authorised only with the written approval of Mr. P Bates or Mr A Bennett and will be communicated either verbally or in writing to employees and the Customer’s representative.

Work to be carried out Driving preformed driven piles, including the following operations: 1. Unloading equipment and materials. 2. Driving piles. 3. Hand digging and breaking out for needle beams. 4. Fixing steel. 5. Concreting piles and beams.

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Personnel Involved 1. All employees of have received appropriate training relevant to all proposed activities

and are considered competent to undertake the work described and possess CPCS/CSCS cards.

2. All the work is to be carried out in an area accessible to other contractors but not normally used by the public.

Training 1. We have a policy of on going training and personal development. Within the last two

years all our operatives have undergone the following training: 1.1. H&S awareness and passed the H&S test. 1.2. First Aid 1.3. Use of petrol saw 1.4. Abrasive wheels 1.5. Manual handling 1.6. Slinger banksman 1.7. COSHH 1.8. Lifting equipment 1.9. Hand arm vibration 1.10. Dust and Fumes 1.11. Face fit dust masks

2. Additional training has been given where appropriate for specialised operations, such as: 2.1. Piling rig operator 2.2. Telehandler operator 2.3. Dumper driver 2.4. Excavator operator.

Risk Assessments

All employees of Total Piling Ltd. involved in the project will be consulted on the relevant risk assessment, informed of risk control measures and given clear information on any site specific hazards (e.g. utility services, other contractors, specific site hazards, ground conditions, weather, water, adjacent buildings), emergency procedures (e.g. first aid, overhead or other services adjacent to their work area, environmental factors). Relevant information received from the Customer/Site Agent) will be taken into consideration. Key Legislation and Guidance with which Total Piling Ltd. will ensure compliance

1. Legislation

1.1. The Construction (Design and Management) Regulations 2007 1.2. Provision and Use of Work Equipment Regulations 1998 (PUWER) 1.3. The Management of Health & Safety at Work Regulations 1999 (as amended) 1.4. Personal Protective Equipment at Work Regulations 1992 (as amended)

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2. Guidance 2.1. Health & Safety in Construction HSG 150Lifting Operations and Lifting Equipment

Regulations 1998 2.2. Protecting the Public – Your Next Move HS(G) 151 2.3. Guidance issued by the Health & Safety Executive “Avoidance of danger from

overhead power lines” Guidance Note GS 6 will be followed 2.4. BS EN 996:1996 – Piling Equipment: Safety Requirements

Control Measures Personal Protective Equipment (PPE) The following PPE is required on site and will be used: 1. Lace up safety boots. 2. Safety helmet. 3. Ear defenders 4. Gloves, hi viz vest or jacket. 5. Wet weather gear, goggles, welding gloves (all as required). Method

A site inspection must be carried out by a competent, experienced person. This inspection should take into account the state of the site, access to the piling position by the rig, access for delivery vehicles, and the proximity of any other structures, cables and services which are considered necessary for safe piling operations. These recommendations should include work to be done to the site to create firm level surface, details of proximity of structures and services, shoring and work required to allow access for delivery vans or wagons. All operators will be suitably trained and experiences in the operation of the equipment. All operators must hold certificates of competence, which are to be kept on their person if at all possible (CPCS/CSCS). BEFORE WE MOBILISE WE MUST HAVE ASSURANCE THAT THE PRINCIPAL CONTRACTOR/CLIENT HAS IDENTIFIED, LOCATED AND PROTECTED ANY AND ALL UNDERGROUND SERVICES. THE BUTTRESSES ARE IN A POOR STATE OF REPAIR AND MUST BE FULLY SUPPORTED WITH ALL NECESSARY SHORING BY LINK CONTRACTING BEFORE UNDERPINNING WORKS CAN COMMENCE

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1. The piling equipment will generally be delivered to site in vans and trailers, but access may be needed for articulated lorries.

2. We will agree with Warrington from an operational perspective as to the preferred location of the air compressor. It will be fitted with industry appropriate silencer, have approiate omissions and be complete with environmental spillage containment.

3. We will set out the piles and beams by tape references from the buttresses as shown on the engineers drawings.

4. Grundomats’ are capable of driving 100mm, 150mm and 168mm diameter steel

cased piles. The Grundomat is inserted into the starter tube, which is a welded tube with a crimped end and placed within an initial pack made up of 20mm aggregate so that the Grundomat bed’s in the casing in order to commence the piling.

5. The hose and safety line from the Grundomat is to be threaded through the predicted

amount of follower tubes. The hose in turn connects to the oiler bottle, which is used to increase or decrease the speed of the Grundomat. It is also used to introduce ice free lubricant oil into the Grundomat.

6. Once the starter tube is placed into the ground and is left projecting approximately

500mm the second tube, known as the follower is placed into the pre-swaged end of the starter tube and is then fully seam welded to make a watertight joint.

7. Successive tubes are added exactly as above until an acceptable set is achieved.

The set is usually better than 60mm for 1 minute, unless advised otherwise required to achieve an SWL of 100Kn per pile.

8. The depth of each and every pile casing will be recorded against each pile number as

part of a set of completion documents.

9. Concrete cubes will be taken and tested to demonstrate that the 35N specified concrete is achieved. Tested after 7 day and 28 day curing. .

10. Once the pile is installed to its full depth and refusals or the set is achieved, a lifting winch frame is placed over the pile and the backing safety line is attached to an air winch, the Grundomat is then turned into its reverse mode and winched out of the casing.

11. On completion of the pile driving, the empty casings are filled with concrete to the

specification of the consulting engineer or 35 Newton designed mix. A T12 or T16 reinforcing bar is inserted to at least 3m leaving 0.5m protruding for tying into the beam or cap reinforcement cage. Note: During the operation of driving the pile, at no point must the weight be allowed to be lifted clear of the pile tube. The weight must at all times remain inside the pile tube whilst the pile is under driving conditions.

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Excavation for Needles

1. Excavation will be done by hand digging due to the state of the existing buttresses to the size and depth shown on the Engineer’s drawings. The area will be Cat scanned before work commences by a suitably qualified person.

2. Break out the masonry and old foundations where needed to construct the needle

beams. 3. When the excavation/breaking out is half complete a sacrificial permanent jack will be

placed under the foundation and tightened up to support the weight. 4. The excavation will be completed and the steel reinforcement fixed in place. Placing Concrete

We will probably use option 3 but may for operational reason use 1 or 2.

1. Placing Concrete with Barrow Mix Companies Concrete should be placed by the concrete company hired to provide the concrete. We should ensure a clear pathway to the placement site is maintained at all times and a safe discharge point is maintained at all times. If any trench or excavation has to be traversed, suitable planking or youngman board should be provided.

2. Operatives Placing Concrete with Own Wheelbarrows

Concrete should be poured into wheelbarrow to the quantity so as not to overload the wheelbarrow or to an excess that the operative’s ability to comfortably handle it is affected. Manual handling rules are in force. We should ensure a clear pathway to the placement site is maintained at all times and a safe discharge point is maintained at all times. If any trench or excavation has to be traversed, suitable planking or youngman board should be provided.

3. Placing Concrete with Concrete Pumps

Concrete pump is to be hired in and set up for safe operation by the companies own pump operator. Place concrete pump delivery hose flat on the ground and slowly pump an adequate amount of concrete through to ensure there are no blockages. This operation should be done on the 1st load of concrete and on all following loads and most important, whilst there are no operatives in contact with or near to the delivery hose. Once it has been determined that there are no blockages, the pouring of concrete can proceed. Delivery hose should be controlled by the concrete pump operator with general assistance given by our operatives.

Dynamic Pile Testing – not required at time of writing.

1. It is vital to select the pile to be tested before the casing is cut off as the pile must be cast 300-500mm above piling mat level and it good condition. If for any reason the pile head is less than perfect it must be repaired with epoxy grout before testing.

2. It shall of paramount importance that access to the piles to be tested is suitable for the piling rig to avoid damage to other installed piles.

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3. Locating bolts will be drilled into opposite faces of pile to accept accelerometer and strain gauges using a cordless drill. Alternatively, a pre-drilled “dolly”, can be used on top of the pile, which saves time when testing more than 1 pile.

4. The gauges are connected to the analyser equipment via a signal cable. 5. The piling rig is set up on the pile. 6. Information on the pile to be tested is passed to the independent testing engineers in

order to calibrate the analysing equipment. 7. The test is performed by delivering several blows to the pile head using the

installation procedure. 8. A finalised report will be forwarded to the client on completion of contractual terms. Emergency Plan

Employees will cooperate with the Client’s site representative in the implementation of procedures arising from the Site Emergency Plan. The procedure to access and provide first aid treatment for an injured person is stated in the Plan.

Monitoring

The MD (Mr. P Bates) will monitor compliance with all requirements listed in this Method Statement.

Appendix A – Photographic record of condition of buttresses

Buttress Nr 1

Buttress Nr 2

Buttress Nr 3

Buttress Nr 4

Buttress Nr 5

Buttress Nr 6

Buttress Nr 7

Buttress Nr 8

Appendix B - Drawings

B8B1 B2 B3 B4 B5 B6 B7

Appendix D – Programme

ID Task Name Duration Start Finish

1 Dilap survey 1 day Thu 08/06/17 Thu 08/06/17

2 Site set up 3 days Wed 14/06/17 Fri 16/06/17

3 Carry out timber survey 1 day Fri 16/06/17 Fri 16/06/17

4 Asbestos survey 1 day? Mon 12/06/17 Mon 12/06/17

5 Materials samples, brick, mortar, slate & glass offeredfor inspection

1 day Thu 15/06/17 Thu 15/06/17

6 Reclaim/salvage items to storage or return to Client 2 days? Thu 15/06/17 Fri 16/06/17

7 Create access, temp opgs to each side elevation 4 days Mon 19/06/17 Thu 22/06/17

8 Clear roof eaves to canal elevation debris and make safe for Piling2 days Thu 15/06/17 Fri 16/06/17

9 Install temporary works, truss and wall support 4 days? Mon 19/06/17 Thu 22/06/17

10 Remove unsafe or detached masonry to wall and buttresses

3 days Fri 23/06/17 Tue 27/06/17

11 Remove masonry and carry out making good and fixing of trusses (internally off towers/MEWPS)

9 days Wed 28/06/17 Mon 10/07/17

12 Install piles and beams 7 days Wed 28/06/17 Thu 06/07/17

13 Remove tree 2 days Thu 08/06/17 Fri 09/06/17

14 Strip roof to canal side 5 days Mon 19/06/17 Fri 23/06/17

15 Stirp roof to compound side 9 days Mon 26/06/17 Thu 06/07/17

16 Erect scaffolding and edge protection 6 days Fri 07/07/17 Fri 14/07/17

17 Replace Purlins 14 days Mon 19/06/17 Thu 06/07/17

18 Install safety nets 1 day Fri 07/07/17 Fri 07/07/17

19 Masonry replacement/repairs and pointing 25 days Mon 17/07/17 Fri 18/08/17

20 Fix boards to roof 8 days Mon 10/07/17 Wed 19/07/17

21 Demolish ramp 2 days Wed 12/07/17 Thu 13/07/17

22 Infil pit 3 days Mon 19/06/17 Wed 21/06/17

23 Construct new ramp 7 days Fri 14/07/17 Mon 24/07/17

24 Install lighting and fire detection inc test & commission 10 days Tue 25/07/17 Mon 07/08/17

25 Remove nets 1 day Mon 31/07/17 Mon 31/07/17

26 Install insulation, battens, slate, glass and ridge 25 days Mon 17/07/17 Fri 18/08/17

27 Facias and RWG's 6 days Mon 17/07/17 Tue 22/08/17

28 Fit existing doors into new frame 2 days Thu 27/07/17 Fri 28/07/17

29 Clean moss off walls 5 days Thu 27/07/17 Wed 02/08/17

30 Clean floor 5 days Mon 07/08/17 Fri 11/08/17

31 Dismantle scaffolding 2 days Mon 21/08/17 Tue 22/08/17

32 Decant 1.5 days Wed 23/08/17 Thu 24/08/17

33 Handover 1 day Thu 24/08/17 Fri 25/08/17

Dilap survey

Site set up

Carry out timber survey

Asbestos survey

Materials samples, brick, mortar, slate & glass offered for inspection

Reclaim/salvage items to storage or return to Client

Create access, temp opgs to each side elevation

Clear roof eaves to canal elevation debris and make safe for Piling

Install temporary works, truss and wall support

Remove unsafe or detached masonry to wall and buttresses

Remove masonry and carry out making good and fixing of trusses (internally off towers/MEWPS)

Install piles and beams

Remove tree

Strip roof to canal side

Stirp roof to compound side

Erect scaffolding and edge protection

Replace Purlins

Install safety nets

Masonry replacement/repairs and pointing

Fix boards to roof

Demolish ramp

Infil pit

Construct new ramp

Install lighting and fire detection inc test & commission

Remove nets

Install insulation, battens, slate, glass and ridge

Facias and RWG's

Fit existing doors into new frame

Clean moss off walls

Clean floor

Dismantle scaffolding

Decant

Handover

W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S15 May '17 22 May '17 29 May '17 05 Jun '17 12 Jun '17 19 Jun '17 26 Jun '17 03 Jul '17 10 Jul '17 17 Jul '17 24 Jul '17 31 Jul '17 07 Aug '17 14 Aug '17 21 Aug '17

Task

Split

Milestone

Summary

Project Summary

External Tasks

External Milestone

Inactive Milestone

Inactive Summary

Manual Task

Duration-only

Manual Summary Rollup

Manual Summary

Start-only

Finish-only

External Tasks

External Milestone

Progress

Deadline

WALTON HALL RIDING SCHOOL REFURBISHMENT & ALTERATIONS CONSTRUCTION PROGRAMME REV

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Project: WALTON HALL RIDING SCHDate: Wed 07/06/17