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GS (2020 Edition) - CEDD

GS (2020 Edition). General Specification for Civil Engineering Works (GS), 2020 Edition Volume 1 of 2. (This Version is Continuously Updated to include Amendments issued). This Electronic File has incorporated the following Amendments:- Rev Issue Date Amendment Incorporated First Issue 31 December 2020 - 2. GS (2020 Edition). 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 2020 Edition of the General Specification comprises mainly the latest update on the review of obsolete standards with the updated text printed in green colour for easy reference.

The 2020 Edition of the General Specification mainly the lacomprises test update on the review of obsolete standardswith the updated text printed in green colour for easy reference .

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Transcription of GS (2020 Edition) - CEDD

1 GS (2020 Edition). General Specification for Civil Engineering Works (GS), 2020 Edition Volume 1 of 2. (This Version is Continuously Updated to include Amendments issued). This Electronic File has incorporated the following Amendments:- Rev Issue Date Amendment Incorporated First Issue 31 December 2020 - 2. GS (2020 Edition). 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 2020 Edition of the General Specification comprises mainly the latest update on the review of obsolete standards with the updated text printed in green colour for easy reference.

2 It was produced under the guidance of a Steering Committee comprising members from the main Government departments involved in civil engineering works. The Quality Management &. Standards Unit of the 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. The 2020 Edition comprises 26 sections and is posted on 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 CEDD Homepage. December 2020. 3. GS (2020 Edition). GENERAL SPECIFICATION FOR. CIVIL ENGINEERING WORKS. CONTENTS. VOLUME 1. SECTION 1 GENERAL. 2 SITE CLEARANCE. 3 LANDSCAPE SOFTWORKS AND ESTABLISHMENT WORKS.

3 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. 4. GS (2020 Edition). CONTENT OF VOLUME 1. SECTION 1. GENERAL. INTERPRETATION OF DOCUMENTS. Application of the General Specification for Civil Engineering Works.

4 Glossary of terms .. Trials and approval .. British Standards, European Standards adopted as British Standards, Codes of Practice and other standards .. Specifications in metric and imperial Dimensions from Drawings .. PROGRAMME. CONTRACTOR'S SUPERINTENDENCE. Foreman for concrete works .. Supervision of piling works .. Particulars of Agent and employees .. CONSTRUCTION SAFETY AND SAFETY OF THE PUBLIC. Construction safety and safety of the WORK ON ROADS. Approval for temporary traffic arrangements and control .. Temporary traffic arrangements and Particulars of temporary traffic arrangements and control .. Use of roads and Work on roads and footways .. Reinstatement of roads and footways .. CARE OF THE WORKS. Protection from water .. Protection from weather .. Protection of works .. DAMAGE AND INTERFERENCE.

5 Damage and interference .. Watercourses and drainage systems .. 5. GS (2020 Edition). Utilities .. Structures, roads and other property .. Access .. RECORDS. Records of wage rates .. Records of correspondence .. Records and reports .. LIAISON WITH OTHERS. Liaison with others .. SITE CLEANLINESS. Site cleanliness .. Prevention of mosquito breeding .. Prevention of dust .. Control of Dogs on Construction Sites .. MATERIALS AND EQUIPMENT. Materials and equipment provided by the Employer .. Materials .. TESTING. Not used .. Batches, samples and specimens .. Samples for testing .. Testing .. Compliance of a batch .. Raw records of tests and test reports .. WORKMANSHIP AND TOLERANCES. Workmanship .. Tolerances .. SITE ESTABLISHMENT. Use of the Occupancy and Rental of Private Land of Ecological Values.

6 Submission of particulars .. Survey of the Site .. Fences and signs on the Site .. The Engineer's Site The Contractor's Site accommodation .. Site utilities and access .. Transport for the Engineer .. Clearance of the Site .. 6. GS (2020 Edition). MEETINGS. Meetings .. PHOTOGRAPHS. Progress photographs and record photographs .. APPENDIX STANDARDS. BRITISH STANDARDS .. AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) STANDARDS .. AMERICAN ASSOCIATION OF STATE HIGHWAY AND TRANSPORTATION. OFFICIALS (AASHTO) STANDARD .. AMERICAN WATER WORKS ASSOCIATION (AWWA) STANDARDS/ AMERICAN. NATIONAL STANDARDS INSTITUTE (ANSI) .. CONSTRUCTION STANDARDS OF THE GOVERNMENT OF THE HKSAR .. AMERICAN PUBLIC HEALTH ASSOCIATION (APHA) STANDARDS .. EUROPEAN STANDARDS ADOPTED AS BRITISH STANDARDS (BS EN) .. EUROPEAN STANDARDS (EN) and/or INTERNATIONAL ORGANIZATION FOR.

7 STANDARDIZATION (ISO) STANDARDS ADOPTED AS BRITISH STANDARDS. (BS EN ISO) .. JAPANESE INDUSTRIAL STANDARDS (JIS) .. INTERNATIONAL ORGANIZATION FOR STANDARDIZATION (ISO). WATER INDUSTRY SPECIFICATION, WATER RESEARCH NATIONAL WATER COUNCIL, UK .. AUSTRALIAN/NEW ZEALAND STANDARDS (AS/NZS) .. CANADIAN STANDARD .. PUBLICLY AVAILABLE SPECIFICATION .. GEO PUBLICATION .. DESIGN MANUAL PUBLISHED BY HIGHWAYS DEPARTMENT .. IEC SYSTEM OF CONFORMITY ASSESSMENT SCHEMES FOR. ELECTROTECHNICAL EQUIPMENT AND COMPONENTS (IECEE) .. APPENDIX REQUIREMENTS FOR STEEL CONTAINER ROOM. APPENDIX REQUIREMENTS FOR CURING TANK. 7. GS (2020 Edition). SECTION 2. SITE CLEARANCE. GENERAL. General requirements .. Pipes and manholes to be abandoned .. Earthworks .. SITE CLEARANCE. Demolition .. Pipes and cables .. Trees .. Reinstatement.

8 Materials and equipment for re-use and storage .. SECTION 3. LANDSCAPE SOFTWORKS AND ESTABLISHMENT WORKS. GENERAL. General requirements .. Site clearance .. Earthworks .. Landscape hardworks .. Geotechnical works .. Weather and ground conditions .. Use of chemicals .. GLOSSARY OF TERMS. Landscape softworks .. Landscape hardworks .. Establishment works .. MATERIALS. Seedling Whip trees .. Light standard trees .. Standard Heavy standard trees .. Semi-mature trees .. Small shrubs .. Large Conifers .. 8. GS (2020 Edition). Palms .. Bamboos .. Herbaceous plants .. Ground Containerised plants .. Grass seed .. Turf .. Sprigs .. Plant name .. Soil-mix .. Soil Mulch .. Mulch for Soil Stakes, ties and guys .. Protective fabric SUBMISSIONS. Particulars of seed mixture, turf, sprigs, soil conditioner, soil-mix and water.

9 Particulars of hydroseeding .. Samples of materials .. HANDLING, STORAGE AND TRANSPORT. Handling and storage of rootballed stock .. Handling and storage of container grown and containerised stock .. Transport of plants .. Storage of plants .. Storage of trees and shrubs .. Handling and storage of turf and sprigs .. Storage of grass seed .. Storage of fertilizer .. PRE-PLANTING WORKS. Preparatory works .. Cleaning ground .. Ripping .. Contaminated ground .. Cultivation .. Protection of prepared ground .. Removal of material .. PLANTING. Use of excavated Planting .. Staking, tying and guying .. Notch planting of seedlings .. 9. GS (2020 Edition). Pit planting of seedlings, shrubs, whips, climbers, ground covers and herbaceous plants .. Pit planting of light standard trees and standard trees .. Pit planting of heavy standard tree and semi-mature trees.

10 Pit planting of bamboo, conifers and palms .. Pit planting on slopes .. GRASSING. Hydroseeding .. Hydroseeding cover .. Surface conditions for hydroseeding .. Application of Protective material .. Patching up .. Post-planting fertilizer .. Turfing .. Sprigging .. Completion of turfing and sprigging .. ESTABLISHMENT WORKS. Establishment works .. Inspection of establishment Replacement of plants and Security of stakes, ties and guys .. Firming up plants .. Weeding .. Grass cutting .. Litter Post-planting fertilizer .. Control of pests, fungi and disease .. Forking over .. Completion of work .. TESTING: GRASS COVER. Testing: grass cover .. Compliance criteria: grass cover .. Non-compliance: grass cover .. TREE TRANSPLANTING. Transplanting of existing trees .. SECTION 4. FENCING. GENERAL. General requirements.


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