PUNJAB AAB-E-PAK AUTHORITY GOVERNMENT OF PUNJAB Provision of Clean Drinking Water by Punjab Aab-e-Pak Authority (Phase-I) NORTH ZONE DELIVERABLE NO. 5 BIDDING DOCUMENTS (VOLUME-II:TECHNICAL SPECIFICATIONS) (RAWALPINDI DIVISION) FEBRUARY 2021 PUNJAB AAB-E-PROJECT (PAPA) SUPPLY, CONSTRUCTION, INSTALLATION OF CONTRACT DOCUMENTS WATER FILTRATION PLANTS IN RAWALPINDI TECHNICAL SPECIFICATIONS DIVISION TECHNICAL SPECIFICATIONS FOR SUPPLY, CONSTRUCTION, INSTALLATION OF WATER FILTRATION PLANTS IN RAWALPINDI DIVISION Contents 1 GENERAL PROJECT DESCRIPTION .................................................................................................................... 1 1.1 Introduction ........................................................................................................................................ 1 1.2 Objectives ............................................................................................................................................ 1 1.3 Description of Work ............................................................................................................................ 2 1.4 Contract Area ...................................................................................................................................... 2 1.5 Project Description .............................................................................................................................. 3 2 GENERAL REQUIREMENTS .............................................................................................................................. 9 2.1 General ................................................................................................................................................ 9 2.2 Responsibility for Information ............................................................................................................. 9 2.3 Workmanship ...................................................................................................................................... 9 2.4 Standards .......................................................................................................................................... 10 2.5 Contractor’s Staffing and Labour Force............................................................................................. 10 2.6 Material and Equipment ................................................................................................................... 11 2.7 Accesses, Use of Land and Trespassing ............................................................................................. 12 2.8 Contractor Activities on Private Property .......................................................................................... 13 2.9 Safe Working Conditions ................................................................................................................... 13 2.10 Inspections and Tools ........................................................................................................................ 17 2.11 Testing of Materials and Goods ........................................................................................................ 17 2.12 Report Preparation, Meeting and Taking Photographs ..................................................................... 18 2.13 Measurement and Payment .............................................................................................................. 19 2.14 Temporary Site Facilities ................................................................................................................... 20 2.15 Review of Technical Documents ........................................................................................................ 23 2.16 Review Procedure for Drawings ........................................................................................................ 23 2.17 Submittal of Documents .................................................................................................................... 23 2.18 System of Units ................................................................................................................................. 27 3 CIVIL WORKS ................................................................................................................................................. 29 3.1 Excavation, Trenching and Backfilling ............................................................................................... 29 TOC-I PUNJAB AAB-E-PROJECT (PAPA) SUPPLY, CONSTRUCTION, INSTALLATION OF CONTRACT DOCUMENTS WATER FILTRATION PLANTS IN RAWALPINDI TECHNICAL SPECIFICATIONS DIVISION 3.2 Concrete ............................................................................................................................................ 34 3.3 Brick and Cement Concrete Block Work ............................................................................................ 48 3.4 Surface Rendering ............................................................................................................................. 51 3.5 Damp Proofing .................................................................................................................................. 52 3.6 Roof Insulation .................................................................................................................................. 54 3.7 Flooring ............................................................................................................................................. 55 3.8 Painting Work ................................................................................................................................... 56 3.9 Measurement and Payments ............................................................................................................ 58 4 MECHANICAL / PLUMBING WORKS ................................................................................................................ 60 4.1 Installation of Piping ......................................................................................................................... 60 4.2 Skid Mounted Equipment Packages .................................................................................................. 68 4.3 Fabrication and Assembly ................................................................................................................. 76 4.4 Water Supply Pipes, Pipe Laying and Appurtenances ........................................................................ 77 4.5 Installation ........................................................................................................................................ 79 5 CONSTRUCTION OF TUBE WELLS ................................................................................................................... 81 5.1 SCOPE ................................................................................................................................................ 81 5.2 GROUND WATER INVESTIGATION ..................................................................................................... 81 5.3 INSTALLATION OF WELL CASING ....................................................................................................... 83 5.4 GRAVEL SHROUDING ......................................................................................................................... 87 5.5 GROUTING OF PUMP HOUSING CASING ........................................................................................... 88 5.6 DEVELOPMENT AND TESTING ........................................................................................................... 89 5.7 MEASUREMENT AND PAYMENT ....................................................................................................... 97 6 TUBE WELL PUMPING FACILITIES ................................................................................................................... 97 6.1 SCOPE ................................................................................................................................................ 97 6.2 MATERIALS AND CONSTRUCTION REQUIREMENTS .......................................................................... 97 6.3 CIVIL WORKS ..................................................................................................................................... 97 6.4 MECHANICAL WORKS ........................................................................................................................ 98 6.5 LIFTING GEAR (CHAIN PULLY) .......................................................................................................... 104 6.6 CHLORINATION EQUIPMENT ........................................................................................................... 104 6.7 GUARANTEE .................................................................................................................................... 105 6.8 OPERATION AND MAINTENANCE MANUAL .................................................................................... 105 6.9 SPARES AND TOOLS ......................................................................................................................... 105 6.10 MEASUREMENT AND PAYMENT ..................................................................................................... 105 TOC-II PUNJAB AAB-E-PROJECT (PAPA) SUPPLY, CONSTRUCTION, INSTALLATION OF WATER CONTRACT DOCUMENTS FILTRATION PLANTS IN RAWALPINDI DIVISION,