In case the Contractor fails to maintain traffic with a reasonably smooth and dust free riding surface, to the satisfaction of the Engineer, the Engineer may so certify in writing to the Employer and the Employer may thereupon employ any other person(s) to carry out the same and recover all expenses consequent thereon and incidental thereto from the Contractor without avoiding the Contract or releasing the Contractor from any of his obligations or liabilities under the Contract or affecting the rights and power conferred on the Employer or the Engineer by the Contract.
SP–1 Location of Project and Contract
Construction of Intake & Water Treatment Plant at Jari Khud is a component of the Project, “Water Supply and Sewerage Schemes in
SP–2 Definition of Site
2.1 The Site of the work is defined as the area for the construction of Intake and Water Treatment Plant comprising the following components:
- Intake Structure: comprising Inlet Pipes , Sump & Pump House, rising main from Intake Structure to Water Treatment Plant
- Water Treatment Plant comprising Reception Tank (1 No), Flash Mixer (1 No), Clarifier Feeding Channel (1 No), Clarifiers Cum Flocculators (2 No), Filter Beds Feeding Channel (1 No), Filtration Plant Building comprising Filter Distribution Channel, Rapid Sand Gravity Filters (8 No), Machine Hall, Pipe Gallery, Filter Control Gallery, Backwash & Service Water Sump, Laboratory & Conference Room, Clear Water Tank (1 No), Chemical House (1 No), Chlorination Building (1 No), Generator Room (1 No), Workshop & Store (1 No), Staff Residences, Development of Parks, Roads Network, Car Parking Shed (1 No) and Barbed wire Fencing and mechanical / electrical components of the project.
The above mentioned components shall be constructed within the right of way lines, boundaries and limits shown on the Drawings and such additional areas adjacent thereto as may be designated by the Engineer from time to time for the construction to be performed under the Contract, and all such areas and additional areas shall be comprised in the Site as defined in Clause 1 of the Conditions of C
SP - 3 Climatic Data
The Project area has a hot tropical climate, the hottest months being May and June when maximum temperatures can approach 45°C. The coolest months are December to February and frosts are possible. Rainfall is erratic, but most likely in July and August. Average annual rainfall is about 500 mm but as high as 1000 mm has been observed. The project area is subject to severe local storms, which may precipitate in excess of the average monthly rainfall in a matter of hours, and disrupt Works and access on the Site. Evaporation rates vary from 11 mm/day in the hottest months to only 2.5 mm/day in the winter.
SP - 4 Ground water
The ground water level in the site of Water Treatment Plant is around 30
SP - 5 Geology
5.1 The site area of Jari Khud comprises predominantly silty sandy gravel beds with subordinate sand
stone and clay beds at places. All rock belongs to Siwalik Group of Miocene to Pliocene age. The rocks at the Site specifically belong to Soan Formation., which makes upper part of the Siwalik Group.
Saiwak beds are covered with a layer of alluvium which comprises silty clay / clayey silt. At some places, silty sandy gravel derived mainly from the nearby Siwalik gravel beds are aslo observed. Some cultivated pockets of land are also observed in the vicinity of the project area.
There is no appreciable cover of vegetation due to less precipitation in the area. Ridges and hillocks of the area are generally barren. Because of high porosity of the gravel beds, rain water is generally not retained in the plant root zone.
The area has been used as a quarry for the supply of earth in the filling of Dam under Mangla Dam Raising Project. Therefore, area has been denuded by removing large volumes of top soil from the project site.
5.2
The employer doesnot guarantee the correctness of the designation of any material described in this Clause nor any interpretations, deductions or conclusion relative to sub surface conditions. Each bidder and the contractor must form his own opinion of the character of the work and the materials to be excavated; he must make his own interpretations, and satisfy himself by his own investigations and research regarding all conditions affecting the work to be done. Bidders and contractors must assume all responsibility for deductions and conclusions as to the nature of condition of the materials to be excavated and of doing other work affected by the geology at the Site of Works.
SP - 6 General Scope of Work of Intake Structure & Water Treatment Plant
(a) Conducting Survey of the project site, verify the influent characteristics and checking the design of Inlet Pipes, Intake Structure, Rising Main and Water Treatment Plant including command levels and other project components with respect to assuring the delivery of project requirements in terms of both quantity and quality. The project requirements are as follows:
(b) Treated water shall meet the WHO Drinking Water Quality Guidelines
(c) Overall capacity of the plant shall be 18 MGD in future, however, the present development activity have been designed for 12 MGD
(d) The common units which shall also be utilized in the future extension as well have been designed for full capacity of 18 MGD.
(e) Pumps at the Intake Structure have been designed for 12 MGD with a certain standby arrangement and a space for the installation of remaining 6 MDG have been made in the Pump House with a certain standby arrangement.
(f) The Intake Structure comprises of Inlet Pipes, Sump (Wet Well) & Pump House.
(g) A rising main has been provided from Intake Structure to Reception Tank which is a first unit of the Water Treatment Plant.
(h) The Water Treatment Plant comprises: Reception Tank, Flash Mixer, Clarifier Feed Channel, Clarifiers, Filter Feed Channel,
(i) The work shall include all construction related activities such as excavation, providing & laying of pipe lines, backfilling, Providing & Laying Plain Cement Concrete, Providing & Laying Reinforced Cement Concrete, fabrication of mild steel, Masonry Work, Plastering, Roof treatment, Water Supply & Sewerage Pipe Network, Plumbing Work for Water Supply & Sanitation, Providing & installation of Railing, road construction work etc but not limited to these.
(j) Mechanical Works shall include welded / flanged pipes (Steel, uPVC & HDPE), Diffuser couplings, valves, penstocks, tees, bends, Pumps, Air Scour Blowers, Chemical Dosing Pumps with allied piping, Adjustable Weirs, Sludge Scrappers, Mechanical Mixers, Flow Meters, Level Probes, Sensors, Rate Controllers, Hydrophore Tank, Compressors, Chlorination System, Cranes with Hoist, etc including but not limited to these.
(k) Electrical works shall include External Illumination Works including light poles, earth work & foundations for light poles, Mercury Vapor Lamps & Holders, Service Terminal Boxes, automatic switching devise, all plant equipment electrification works, WAPDA Metering Room, Metering Panel, HT Switchgear Panels, LT Switchgear Panels, Power Factor Improvement Plants, Transformer Protection Panels, Housing Facilities for Electrical Panels, HT & LT Power & Control Cables, Cable Trays, Earthing Systems, Electrical Protection Works, Provision for Manual / Automatic Switching Controls for different Plant Equipment etc but not limited to these.
(l) Start the work after satisfying with the design of the above mentioned works.
(m) Testing & Commissioning of all the above mentioned works and related paraphernalia.
(n) Operation & Maintenance of the Intake Structure, Rising Main & Water Treatment Plant for a specified period of 365 days.
(o) Final site clearing as per requirement of the Project Director.
SP–7 Drawings
7.1 The Drawings, issued with the Bid Documents and listed in Drawing Section, show the Scope of the Works (SOW) to be performed by the Contractor. The Bid Drawings shall not be used as a basis for construction but may be used as a basis for placing preliminary orders for materials, subject to corrections based on the future issue of Drawings as provided under Sub-clause (5.2) hereof.
7.2 After award of Contract, the Bid Drawings will be replaced by Drawings issued for construction including supplements to the Specification as may be necessary. The Drawings issued for construction will include Re-issued Bid Drawings, Modified Bid Drawings, and Additional Drawings as required to develop the Works in greater detail. Further modifications will be made as necessary to detail the construction requirements. The Drawings issued for construction that show changes from the Bid Drawings and Specification will be reviewed by the Contractor for his quotation for adjustments (if any) of the Contract Price in accordance with the provision of Clause 51 “Variations”, of the Conditions of Contract. The Works shall be executed in conformity with the Drawings issued for construction.
7.3 The Contractor shall conduct Survey of all the project site and develop detail maps and Drawings and check all design used and Drawings issued for construction carefully as far as practicable after receipt hereof, and shall promptly bring to the notice of the Engineer any errors which are discovered, and then make “As Built” Drawings and submit them along with every Monthly Interim Payment Certificate (IPC).
7.4 During the course of the Contract, information will be given by the Engineer in respect of individual structures to be constructed in accordance with issued Drawings which show typical structures of the same form. It shall be the Contractor’s own responsibility to prepare from this information such Working Drawings as he may require for the proper setting out and construction of such structures. Work shall not commence on an individual structure or line until the Site Survey of that particular area have been completed and relevant Working Drawings have been approved by the Engineer.
7.5 The Contractor shall be responsible for the preparation of all record or “As Built Drawings” as the Work proceeds. These drawings shall be for the permanent record of the Employer and shall be in the form of a black-line reproducible film negative together with 5 prints for each drawing produced, and in digital format in AutoCAD files. The quality and format of these drawings shall be subject to the approval of the Engineer.
7.6 The approval of the Monthly IPC and the making of “As Built” or “Working” Drawing, and issue of Certificate of Completion for the whole or a section of the Works, in accordance with the Conditions of Contract Clause 48, shall be conditional upon the Contractor having completed the said Works a complete draft set of the record drawings to the satisfaction of the Engineer. Thereafter the Contractor shall submit the completed drawings in hardcopy and in electronic copy (AutoCAD files) in accordance with this Clause not later than two months after the issue of the Certificate of Completion.
SP–8 Right to Change
When additional information from Site Survey conducted by the Contractor or new information regarding the geological formations, or other conditions becomes available as a result of excavation, testing, model studies, or exploratory Work, the Engineer may find it desirable to change dimensions, or design of one or more of the features of the Works to conform to the newly observed conditions and due to these conditions, the Engineer reserves the right to make any such reasonable changes, and the Contractor’s Equipment shall be deployed and his operations shall be conducted so as to accommodate any such reasonable changes in the Works with no increase in cost to the Employer.
SP–9 Drawings and Data Furnished by Contractor
(i) Whenever required by the Specifications of the Drawings and for all materials or Plant to be fabricated, manufactured, furnished and installed by the Contractor for the Works, the Contractor shall make Site and topographic Survey of all streets and Project area, and detailed Shop Drawings as required before proceeding with the Works.
(ii) All such drawings shall be adequately and properly checked before submittal to the Engineer for approval and shall be so designated. All unchecked drawings received by the Engineer for approval will be “Returned for Correction”.
(iii) Four copies of such drawings shall be submitted to the Engineer in the form of prints from the original checked drawings. One print of each of these drawings will be returned to the Contractor by the Engineer, marked “Approved”, “Approved Except as Noted” or “Returned for Correction”. The notes “Approved” or “Approved Except as Noted” will authorize the Contractor to proceed with the fabrication and manufacture of the Plant covered by such drawings, subject to the corrections, if any, noted thereon.
(iv) When prints of drawings have been marked “Returned for Correction”, the Contractor shall make the necessary revisions on the Drawings and shall, within 30 days, submit prints for approval in the same manner as before and any delay in submittal will be on risk and cost of the Contractor.
(v) Any installation, fabrication or manufacturing undertaken during or before the approval of the Drawings will be at the Contractor’s risk. The Engineer shall have the right to require the Contractor, to check the design and make any changes in the design which may be necessary, in the opinion of the Engineer, to make the network, materials or Plant conform to the requirements and intent of the Specifications without additional cost to the Employer.
(vi) Approval of the Contractor’s drawings shall not be held to relieve the Contractor of any part of his obligation to meet all of the requirements of the Site Survey and Specification or the responsibility for the correctness of his Survey Report and Drawings.
(vii) At the time of delivery of the Plant or materials, the Contractor, if requested, shall furnish CD of AutoCAD files to the Engineer as well as two complete sets of reproducible negatives of all final approved Drawings.
SP–10 Cooperation with other Contractors
During the period of the Contract, it is envisaged that further contracts will be awarded for installation of water supply system, sewers network, connecting pipelines and wastewater treatment plants. Access for these other contracts will be through the Site. Notwithstanding the Conditions of Contract, Clause 20, the Contractor shall coordinate with and permit all reasonable access to the Contractors undertaking the above Works.
SP–11 Quality of Materials
11.1 All the materials, fixtures, fittings and supplies furnished under the Contract shall be new and unused, of standard first-grade quality and of the best Workmanship and design. No inferior or low grade materials, supplies or articles will be either approved or accepted, and all Work of assembly and construction shall be done in a first class and professional manner. In asking for prices of materials intended for delivery to the Site and incorporation in the Works under any portion of the Specifications, the Contractor shall provide the manufacturer or supplier with complete information as may be necessary to secure compliance with this Clause and, in every case he shall quote this Clause in full to each such manufacturer or supplier.
11.2 Prior to procurement, the Contractor shall furnish to the Engineer, for his approval, the names of the manufacturers of all Equipment and materials which he plans to incorporate in the Works. With this information the Contractor shall also furnish such pertinent information as to capacities, efficiencies and sizes, and such other information as may be required by the Engineer. Samples of materials shall be submitted to the Engineer for approval before their use at the Project. Equipment, materials, supplies and articles installed or used without the Engineer’s approval shall be at the risk of subsequent rejection and no payment or time shall be awarded to the Contractor.
SP–12 Standards and Specifications
12.1 Except where otherwise specified all materials and workmanship shall conform with the requirements of the relevant British Standards and British Standard Codes of Practice (hereinafter referred to as BS or CP) issued by the British Standards Institution current on 1st January, 2006. Other equivalent National or International Standard Specifications may be substituted at the sole discretion of the Engineer or as may have been agreed in the Contract.
Where relevant British Standards and Codes of Practice now quote metric units only, these are to be interpreted as required to the nearest equivalent imperial (foot/pound) unit for the purposes of this Contract.
All materials and workmanship not fully specified herein or covered by an approved Standard shall be of such a kind as is used in first class Work and suitable to the climate in the Project Area.
12.2 If the Contractor, at any time and for any reason, wishes to deviate from the above standards or desires to use material or Plant not covered by the above standards, he shall state the exact nature of the changes, the reason for making the change and shall submit complete Specifications of the material and Plant to the Engineer for approval.
SP–13 Soil and Materials Testing Laboratory
The Contractor will provide, maintain the equipment and instruments and shall employ experienced staff to run the tests as per Contract Specifications. If the Contractor is unable to furnish such a Site Laboratory, then approved Laboratories will be contacted by the Contractor to perform the Tests at the risk and cost of the Contractor.
The approved laboratories listed on ISO might be utilized for conducting all types of tests on the Project and payment will be made by the Contractor for these tests. Any test which is not available will be conducted by laboratory specified by the Engineer.
13.1 Tests
The list of tests likely to be involved on the Project and AASHTO Designation of each test is provided as under:
Sr. # | Test | AASHTO Designation |
| | A – Tests | |
| 1. | Laboratory determination of Moisture Content of soils | T 265 |
| 2. | (i) Determining the Liquid Limit of Soils | T 89 |
| | (ii) Determining the Plastic Limit and Plasticity Index of Soils | T 90 |
| | (iii) Soil Classification | M 145 |
| 3. | The Moisture Density Relationship of Soils using 5.5 lb (2.5 Kg) Rammer and a 12 in (305 mm) drop | T 99 |
| 4. | Moisture Density Relationship of Soils using 10 lb (4.54 Kg) Rammer and an 18 in (457 mm) drop | T 180 Method D |
| 5. | In–place Density of Compacted Base Courses containing large sizes of Coarse Aggregate | T 181 |
| 6. | Specific Gravity of Soils | T 100 |
| 7. | The | T 193 |
| 8. | Particle Size Analysis of Soils and Aggregates | T 88 & T 27 |
| 9. | Specific Gravity and Absorption of Fine Aggregates | T 84 |
| 10. | Specific Gravity and Absorption of Coarse Aggregates | T 85 |
| 11. | Unit Weight of Aggregates | T 19 |
| 12. | Resistance to Abrasion of Small Size Coarse Aggregate by Abrasion and Impact in the | T 96 |
| 13. | Chemical Tests | |
| | Suitability of water for use in concrete : | |
| | (a) Organic Impurities Test | |
| | (b) Inorganic Impurities / Chloride, Sulphate and Nitrate contents with PH Value | |
| | (c) Potential Reactivity of Aggregate (Chemical Method) | ASTM–C 289 |
| 14. | Material Finer than 0.75 mm (No. 200) Sieve in Mineral Aggregates by Washing | T 11 |
| 15. | Soundness of Aggregate by use of Sodium Sulphate or Magnisum Sulphate | T 104 |
| 16. | Sand Equivalent Test | T 176 |
| 17. | Clay Lumps and Friable Particles in Aggregate | T 112 |
| 18. | (i) Making and Curing Concrete Test Specimens in the Field | T 123 |
| | (ii) Slump of Portland Cement Concrete | T 119 |
| | (iii) Compressive Strength of Cylindrical Concrete Specimens | T 22 |
| | (iv) Sampling Fresh Concrete | T 141 |
| 19. | Sampling Bituminous Materials | T 40 |
| 20. | (i) Resistance to Plastic Flow of Bituminous Mixtures using Marshall Apparatus | T 245 |
| | (ii) Bulk Specific Gravity of Compacted Bituminous Mixtures using Saturated Surface – Dry Specimens | T 166 |
| 21. | Quantitative Extraction of Bitumen from Bituminous Paving Mixtures | T 164 |
| 22. | Viscosity of Bitumen | T 72 |
| 23. | Penetration of Bituminous Material | T 49 |
| 24. | Solubility of Bituminous Materials | T 44 |
| 25. | Coating and Stripping of Bitumen – Aggregate Mixture | T 182 |
| 26. | (i) Loss on Heating of Oil and Asphaltic Compounds | T 47 |
| | (ii) Flash and Fire Points by Cleveland Open Cup | T 48 |
| 27. | Ductility of Bituminous Materials | T 51 |
| 28. | Softening Point of Bitumen (Ring–and–Ball Apparatus) | T 53 |
| 29. | Effect of Heat and Air on Asphalt Materials (Thin–Film–Oven Tests) | T 179 |
| 30. | Effect of Heat and Air on Asphalt Materials (Rolling–Thin–Film–Oven Tests) | T 240 |
| 31. | Determining Degree of Particle Coating of Bituminous – Aggregate Mixture | T 195 |
| 32. | Maximum Specific Gravity of Bituminous Paving Mixtures | T 209 |
| 33. | Specific Gravity of Semi Solid Bituminous Materials | T 228 |
| 34. | (i) Determining Degree of Pavement Compaction of Bituminous Aggregate Mixtures | T 230 |
| | (ii) Bulk Specific Gravity of Compacted Bituminous Mixtures using Paraffin – Coated Specimens | T 275 |
| 35. | Spot Test of Asphaltic Materials | T 102 |
| 36. | Petrographic Examination of Aggregates for Concrete | C–295– 90 |
| 37. | Any other test deemed necessary | |
| | B – Manuals | |
| 1. | The latest editions of AASHTO Part–I and Part–II | 1 Copy |
| 2. | The latest edition of ASTM Standards Part 4 and 14 | 1 Copy |
| 3. | Asphalt Institute Test Manual | 1 Copy |
13.2 Testing Equipment – Field Control
The following field tests will be carried out by the Contractor for quality control / spot checking purposes as the work proceeds with his own equipment :
Sr. # | Test | AASHTO Designation |
| 1. | In–place Density by Sand Cone Method (with 15.25 cms and 30.5 cms Cone) | T 191 |
| 2. | In–place Density of Compacted Base Courses Containing Large Sizes of Coarse Aggregates | T 181 |
| 3. | Sampling Fresh Concrete | T 141 |
| 4. | Slump of Portland Cement Concrete | T 119 |
| 5. | Sampling Bituminous Paving Mixture | T 40 |
| 6. | Determining the Temperature of Bituminous Paving Mixtures | – |
| 7. | Coring and Determination of Bulk Specific Gravity of Compacted Bituminous Mixtures | T 166 |
SP–14 Contractor’s Camps
14.1 The Contractor shall provide such camps as are required for the proper and efficient progress of the Works to house his own employees and to provide such Site office facilities for the use of the Engineer and Employer as specified and required by the Project Director. The Contractor’s camps shall be included within his Temporary Works.
14.2 The Contractor’s camps shall comply with the rules of the Azad Government of The State of Jammu and Kashmir Labour Camp Rules.
SP–15 Extent of Works
15.1 The Contractor shall execute the work specified under the Contract as contained in Section SP-4, under this Section in a perfect professional manner and strictly according to Contract Drawings, BOQ etc. The Contractor shall do all the Work required for the completion of the Works as specified in the Contract.
15.2 The Contractor shall provide all the necessary electric power, water and services; be responsible for the construction and maintenance of the necessary construction camps, offices and warehouses; and perform all other Work necessary for completion of the Works described here in strict conformity with these Specifications.
SP–16 Phasing of Work
16.1 The Contractor shall observe the sequence of Works directed by the Engineer, as well as according to the approved Baseline Schedule in the Contract or to any other modified schedule of Works.
SP–17 Reporting and Mobile Phones
As part of the Works, the Contractor shall produce regular report as provided for in the Technical Specifications. In addition the Contractor shall provide his senior representative at each active Site with a mobile telephone. Such telephones shall be made available on Site when required by the Engineer’s Site staff for making local telephone calls in connection with the execution or supervision of the Works.
SP–18 Detour Roads and Maintenance of Traffic
18.1 General
The Contractor shall conduct his operations so as to offer the least possible obstruction and inconvenience to the public all in accordance with General Specifications and Special Provisions and he shall have under construction no greater length or amount of Works than he can execute properly with due regard to the rights and convenience of the public.
Unless otherwise directed by the Engineer, all public traffic shall be permitted to pass through the Works with as little inconvenience and delay as possible.
Two–way traffic flow must be provided at all times whether within the existing road or by use of detour roads or by a combination of both, free of cost to the Employer.
The temporary bridge, and walk bridge (pedestrian temporary bridge on trench), if required for detour shall be properly designed, substantially built and maintained for the load it will bear. The Contractor shall prepare and submit the temporary bridge Drawings to the Engineer for approval. Approval of the Contractor's drawings shall not be considered as relieving him of any responsibility for safe designing, constructing, maintaining and providing safety to public due to the temporary bridge and detour.
18.2 Maintenance of Traffic
a) The Contractor will coordinate with the Traffic Police and shall be responsible for the safety and convenience of the public traffic and walk in and around the operations during construction. Traffic control devices as outlined in Special Provisions SP–6 shall be provided and maintained in good working condition throughout the required period.
b) Dismantling and Trench excavation through streets and roadways and reworking and surfacing of streets excavation for water supply network, Sewers, dismantling of streets and roads shall be conducted in such a manner as to provide a reasonably smooth and even surface satisfactory for use by public traffic at all times. During rainy seasons special surface treatment such as bituminous single surface treatment or other method approved by the Engineer shall be executed free of cost. The riding surface shall be maintained smooth by regular grading, water sprinkling and rolling operations.
c) The Public shall not be expected to run within the limits of active construction operations and the Contractor shall programme and carry out his Works in such a way so as to allow an adequate width of unobstructed roadway for the safe passage of the Public.
d) Alternative traffic maintenance proposals by the Contractor ensuring a minimum of 6 meters travel way may be submitted for the approval of the Engineer.
e) The Contractor shall so schedule and carry out his Works that pedestrian and vehicle access to adjoining premises shall be maintained at all times, except with the written agreement of the residents or users of the premises.
18.3 Measurement and Payment
The costs of the Work involved in detour and maintenance of traffic as specified herein shall not be measured for direct payment and its cost shall be deemed to have included in the other Unit Rates of Works.
18.4 Deduction
