Federal Electricity & Water Authority Water Directorate ... ... with BS 6399 Part 1 'Code of Practice

  • View
    1

  • Download
    0

Embed Size (px)

Text of Federal Electricity & Water Authority Water Directorate ... ... with BS 6399 Part 1 'Code of...

  • WAM

    Client: FEDERAL ELECTRICITY AND WATER AUTHORITY (FEWA) Project: STANDARD SPECIFICATIONS FOR WATER WORKS

    Engineer WATER DIRECTORATE - ASSET MANAGEMENT DEPARTMENT

    Title: Technical Terms / Chapter-4 / Engineering Specifications / Civil Engineering Works Specification

    CS06-GENERAL REQUIRMENTS FOR CIVIL/STRUCTURAL WORKS

    Office :

    DUBAI Order: Document: MWA_PRO_07/WAM-04-CS06 Rev: OCT/2014 sheet: 1 of: 17

    Federal Electricity & Water Authority

    Water Directorate

    Asset Management Department

    STANDARD SPECIFICATIONS

    FOR WATER WORKS

    TECHNICAL TERMS

    Chapter – 4

    Engineering Specifications

    [C-Civil Engineering Works Specifications]

    CS06-General Requirements for Civil/Structural Works

  • WAM

    Client: FEDERAL ELECTRICITY AND WATER AUTHORITY (FEWA) Project: STANDARD SPECIFICATIONS FOR WATER WORKS

    Engineer WATER DIRECTORATE - ASSET MANAGEMENT DEPARTMENT

    Title: Technical Terms / Chapter-4 / Engineering Specifications / Civil Engineering Works Specification

    CS06-GENERAL REQUIRMENTS FOR CIVIL/STRUCTURAL WORKS

    Office: DUBAI Order: Document: MWA_PRO_07/WAM-04-CS06 Rev: OCT/2014 sheet: 2 of: 17

    CS06-General Requirements for Civil/Structural Works

    TABLE OF CONTENT

    1. GENERAL

    2. DESIGN

    2.1 Architectural Design

    2.2 Structural Design

    3. LOADINGS

    3.1 Imposed Loads

    3.2 Dynamic Loads

    3.2.1 Static Deformation

    3.2.2 Dynamic Analysis

    3.2.3 Existing Force

    3.2.4 Schematic Mechanical Model

    3.2.5 Additional Requirements

    3.3 Crane Loads

    3.4 Thermal Effects

    3.4.1 Thermal Loads

    3.4.2 Thermo-Mechanical Forces and Stresses

    3.5 Loads During Erection and Maintenance

    3.6 Piping Loads

    4. BEARING PRESSURES

    5. DESIGN LEVELS

    6. METEOROLOGICAL AND AMBIENT CONDITIONS

    7. WATER TIGHTNESS

    8. FOUNDATIONS

    8.1 General

    8.2 Calculations

    8.3 Factors of Safety

    8.4 Settlements

    8.5 Foundation Bolts

    8.5.1 Grouting Below Base Plates

    8.6 Reinforcement in Concrete Upstand Over Floor

    8.6.1 Particular Requirements

  • WAM

    Client: FEDERAL ELECTRICITY AND WATER AUTHORITY (FEWA) Project: STANDARD SPECIFICATIONS FOR WATER WORKS

    Engineer WATER DIRECTORATE - ASSET MANAGEMENT DEPARTMENT

    Title: Technical Terms / Chapter-4 / Engineering Specifications / Civil Engineering Works Specification

    CS06-GENERAL REQUIRMENTS FOR CIVIL/STRUCTURAL WORKS

    Office: DUBAI Order: Document: MWA_PRO_07/WAM-04-CS06 Rev: OCT/2014 sheet: 3 of: 17

    9. STRUCTURAL STEEL DESIGN REQUIREMENTS

    9.1 Type Of Construction And Bracing

    9.2 Minimum Sizes Of Structural Members/Components

    9.3 Definition of Loads In Various Conditions Of Application

    9.3.1 Dead loads

    9.3.1.1 Dead load Conditions

    9.3.1.2 Weights of Building Materials

    9.3.1.3 Equipment Weights

    9.3.1.4 Additional Forces from Equipment/Piping

    9.3.1.5 Electrical and Instrument Loads on Structures and Piperacks.

    9.3.2 Imposed Loading

    9.3.3 Contingency

    9.4 Load Combinations

    9.5 Load Factors For Limit State Design

    9.6 Material Strength

    9.7 Deflections

    9.8 Miscellaneous Loading

    9.9 Pre-Engineered Buildings

  • WAM

    Client: FEDERAL ELECTRICITY AND WATER AUTHORITY (FEWA) Project: STANDARD SPECIFICATIONS FOR WATER WORKS

    Engineer WATER DIRECTORATE - ASSET MANAGEMENT DEPARTMENT

    Title: Technical Terms / Chapter-4 / Engineering Specifications / Civil Engineering Works Specification

    CS06-GENERAL REQUIRMENTS FOR CIVIL/STRUCTURAL WORKS

    Office: DUBAI Order: Document: MWA_PRO_07/WAM-04-CS06 Rev: OCT/2014 sheet: 4 of: 17

    CS06-General Requirements for Civil/Structural Works

    1. GENERAL

    Unless specifically mentioned hereafter, any work or supply of material shall be subjected to the compliance of internationally recognized Standards or Codes, such as BSI, ASTM, DIN or approved equivalent.

    The Specifications of the CIRIA Guide to concrete construction in the Gulf/GCC region are also applicable.

    2. DESIGN

    All designs and details must be prepared to comply with the best Engineering practice, the appropriate Standards and Codes of Practice and the requirements of this Specification.

    The Specification gives the minimum acceptable Standards for the design, workmanship and

    materials with which the Contractor shall comply. The drawings supplied with the Tender documents are included only for guidance and indicate the

    minimum requirements to be provided by the Contractor. The Contract price shall include the cost of any enlarged structures or modified layout required to

    meet FEWA's design parameters.

    In general the Contractor shall be responsible for but not limited to the following:

     Preparation of detailed design calculations, construction and maintenance of the whole of the works in accordance with the relevant American/International/British Codes/Authorised local and national bodies taking into account the most unfavourable condition of dead load, live load, wind load, erection load etc. for foundation, sub- structures, superstructures for reservoirs, pump stations, service building, chlorination buildings, accommodation buildings, surge vessel foundations, auxiliary structures e.g. gate house, sun shades etc., external works e.g. boundary wall, fence, septic tanks, soak-way pits, trenches, roads, thrust blocks, chambers, cable/pipe RC trenches and other miscellaneous works...etc. (Minimum concrete grade, cover, reinforcement grade etc. shall be as per detailed specifications for materials submitted separately).

     Preparation of detailed working drawings, reinforcement schedules, material lists, bill of quantities etc.

     The works also include interface connections with the FEWA’s existing pipelines and tanks wherever mentioned.

    2.1 Architectural Design

    The design of the whole work shall be in accordance with the best standards of modern industrial practice.

  • WAM

    Client: FEDERAL ELECTRICITY AND WATER AUTHORITY (FEWA) Project: STANDARD SPECIFICATIONS FOR WATER WORKS

    Engineer WATER DIRECTORATE - ASSET MANAGEMENT DEPARTMENT

    Title: Technical Terms / Chapter-4 / Engineering Specifications / Civil Engineering Works Specification

    CS06-GENERAL REQUIRMENTS FOR CIVIL/STRUCTURAL WORKS

    Office: DUBAI Order: Document: MWA_PRO_07/WAM-04-CS06 Rev: OCT/2014 sheet: 5 of: 17

    Finishing materials shall be selected so as to match each other and to present ample guarantees of durability. Samples shall be submitted for the FEWA’s approval, as well as selection of colours and textures. The structures as a whole with external works shall give a good aesthetic effect from every angle of look. The perspective drawings with 3D effect shall be prepared by the contractor as required by the Authority.

    2.2 Structural Design 1. Calculation Methods Designs shall be carried out in accordance with accepted FEWA principles and shall meet

    the requirements of the applicable Standards and Codes of Practice. Any static and dynamic calculation is to be submitted for the FEWA’s approval.

    When the Contractor uses computerised calculation methods for special kinds of structure,

    he shall provide a full explanation of such method, should the FEWA require it, together with adequate documentation and reference. Structural analysis shall be done with the latest software programmes with new technique and presentation.

    2. Structural Design Principles

    a) Foundations shall be so designed based on soil investigation report to minimize settlements, especially differential settlements, which shall be kept within limits preventing any danger to the construction and the equipment. When necessary, piles of suitable type shall be provided.

    b) The requirements related to fire protections shall be taken into consideration. c) The requirements related to seismic force, wind force, erection loads, bouancy

    effects and other unexpected forces shall be taken into consideration.

    3. LOADINGS

    The design loadings shall conform to the requirements of adopted standards and codes of practice, as well as special Site Conditions and Technical Specifications.

    The loadings to be used in the design of structures and buildings shall generally be inaccordance with BS 6399 Part 1 'Code of Practice for Dead and Imposed Loads',Part 2 'Code of Practice for Wind Loads' or BSCP 3 Chap V (Part 2) Wind Loads Part 3 imposed roof loads, BS 2573 loads for crane Gantry Girders, BS 2655 'loads due to lifts' and loads due to machinery, vibration, construction, test loads etc.

    Where known loads exceed those of BS 6399 the higher loading shall be adopted. The minimum

    earthquake factor shall be taken as 0.15g a