2006 Edition
The Government of the Hong Kong Special Administrative Region
GENERAL SPECIFICATION
FOR CIVIL ENGINEERING
WORKS
VOLUME 1
2006 Edition
2
The Government of the Hong Kong Special Administrative Region The 1992 Edition was first published in March 1992 First Reprint, April 1993 Second reprint, March 1994 Third reprint, July 1995 Fourth reprint, August 1996 Fifth reprint, December 1997 Sixth reprint, November 1998 Seventh reprint, March 2001 Eighth reprint, October 2002 The 2006 Edition was published in March 2007 Prepared by: Standards Unit, Civil Engineering and Development Department, Civil Engineering and Development Building, 101, Princess Margaret Road, Homantin, Kowloon, Hong Kong. Members of Steering Committee for the General Specification for Civil Engineering Works: Assistant Director (Technical), CEDD (Chairman) Chief Engineer/Land Works, CEDD Chief Geotechnical Engineer/LPM3, CEDD Technical Secretary 1, DSD Chief Highway Engineer/R & D, HyD Chief Civil Engineer, HD Technical Secretary, NTE DevO, CEDD Chief Engineer/Design, WSD Senior Engineer/Standards, CEDD (Secretary) This publication is available from: Publications Sales Unit Information Services Department Room 402, 4th Floor, Murray Building Garden Road, Central Hong Kong (Telephone No.: (852) 2537 1910) The book can be ordered both locally and overseas through the following channels: Visit the online Government Bookstore at www.bookstore.gov.hk Download the order form from the Information Services Department website at www.isd.gov.hk
and submit the order direct online or by fax to (852) 2523 7195 By e-mail at [email protected] Future amendments of this publication will be published on the website of the Civil Engineering and Development Department at http://www.cedd.gov.hk/eng/publications/standards_handbooks/stan_gs_2006.htm.
Price in Hong Kong: HK$192.00 (in set of 2 volumes) An additional bank charge of HK$60 or US$7.7 is required per cheque made in currencies other than Hong Kong dollars.
Cheques, bank drafts or money orders must be made payable to The Government of the Hong Kong Special Administrative Region
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FOREWORD
The General Specification for Civil Engineering Works lays down the quality of materials, the
standards of workmanship, the testing methods and the acceptance criteria for civil engineering works undertaken for the Government of the Hong Kong Special Administrative Region. Where necessary, this General Specification should be supplemented by a particular specification.
The 2006 Edition of the General Specification comprises considerable greening of the Eighth Reprint of the 1992 Edition (October 2002) according to the current green practices of the construction industry. It was produced over a 15-month period from March 2005 under the guidance of a Steering Committee comprising members from the main Government departments involved in civil engineering works. The greening of each section was undertaken by a works department with the appropriate expertise. The Standards Unit of Civil Engineering and Development Department (CEDD) was responsible for the overall co-ordination of comments received from departmental circulation, editing and production of the document.
Sustainability is the prime objective of the 2006 Edition. Two new sections, viz.
Environmental Protection (Section 25) and Preservation and Protection of Trees (Section 26) have been created. The original Section 22 for Railways Works has been deleted, as construction of railways is no more the responsibility of works departments. The 2006 Edition comprises 26 sections and is posted on the CEDD Homepage on the Internet. The General Specification will be updated continuously. The electronic files of the sections affected by any amendment issued will be kept up-to-date on the CEDD Homepage.
September 2006
2006 Edition
4
GENERAL SPECIFICATION FOR CIVIL ENGINEERING WORKS
CONTENTS
VOLUME 1
SECTION 1 GENERAL
2 SITE CLEARANCE
3 LANDSCAPE SOFTWORKS AND ESTABLISHMENT WORKS
4 FENCING
5 DRAINAGE WORKS
6 EARTHWORKS
7 GEOTECHNICAL WORKS
8 PILING WORKS 9 CARRIAGEWAYS: SUB-BASE MATERIAL AND BITUMINOUS
MATERIALS 10 CONCRETE CARRIAGEWAYS
11 MISCELLANEOUS ROADWORKS
12 TRAFFIC SIGNS, ROAD MARKINGS AND ROAD STUDS
VOLUME 2
SECTION 13 WORK FOR ELECTRICAL AND MECHANICAL INSTALLATIONS
14 FORMWORK AND FINISHES TO CONCRETE
15 STEEL REINFORCEMENT
16 CONCRETE AND JOINTS IN CONCRETE
17 PRESTRESSING
18 STEELWORK
19 HANDRAILING, LADDERS, STAIRS AND FLOORING
20 BRIDGEWORKS
21 MARINE WORKS
22 WATER SUPPLY PIPEWORKS
23 WATER RETAINING STRUCTURES
24 BUILDING WORKS
25 ENVIRONMENTAL PROTECTION
26 PRESERVATION AND PROTECTION OF TREES
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CONTENT OF VOLUME 1 SECTION 1
GENERAL Page No.
INTERPRETATION OF DOCUMENTS
1.01 Application of the General Specification for Civil Engineering Works ................................. 1.3 1.02 Abbreviations ............................................................................................................................. 1.3 1.03 Glossary of terms ....................................................................................................................... 1.5 1.04 Trials and approval .................................................................................................................... 1.5 1.05 British Standards, Codes of Practice and other standards ....................................................... 1.6 1.06 Specifications in metric and imperial units .............................................................................. 1.6 1.07 Dimensions from Drawings ...................................................................................................... 1.6
PROGRAMME
1.08 Programme ................................................................................................................................. 1.6
CONTRACTOR'S SUPERINTENDENCE
1.09 Surveyor ..................................................................................................................................... 1.7 1.10 Foreman for concrete work ....................................................................................................... 1.7 1.11 Supervision of piling works ...................................................................................................... 1.7 1.12 Particulars of agent and employees .......................................................................................... 1.8
SAFETY
1.13 Safety ......................................................................................................................................... 1.9
WORK ON ROADS
1.14 Approval for temporary traffic arrangements and control ....................................................... 1.9 1.15 Temporary traffic arrangements and control ........................................................................... 1.10 1.16 Particulars of temporary traffic arrangements and control ..................................................... 1.10 1.17 Use of roads and footways ....................................................................................................... 1.11 1.18 Work on roads and footways .................................................................................................... 1.11 1.19 Reinstatement of roads and footways ...................................................................................... 1.12
CARE OF THE WORKS
1.20 Protection from water ............................................................................................................... 1.12 1.21 Protection from weather ........................................................................................................... 1.12 1.22 Protection of work .................................................................................................................... 1.12
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Page No.
DAMAGE AND INTERFERENCE
1.23 Damage and interference .......................................................................................................... 1.13 1.24 Watercourses and drainage systems .......................................................................................... 1.13 1.25 Utilities ....................................................................................................................................... 1.14 1.26 Structures, roads and other property ......................................................................................... 1.16 1.27 Access ........................................................................................................................................ 1.16
RECORDS
1.28 Records of wage rates ............................................................................................................... 1.16 1.29 Records of correspondence ....................................................................................................... 1.16 1.30 Records and reports ................................................................................................................... 1.16
LIAISON WITH OTHERS
1.31 Liaison with others .................................................................................................................... 1.17
SITE CLEANLINESS
1.32 S
