| 3 | "Laying submerged crossings using pipes with or without concrete sheathing across major water course crossings and providing all wor ks,labour, inputs and materials/consumable necessary to perform and complete the work in all respects in accordance with the contrac t, including taking delivery and transportation of Owner-supplied coated pipes to the work site from designated stockpile location, inspection of the coated pipes visually and with holiday detector for defects, arranging all necessary intermediate storage area req uired thereof till the pipes are installed in permanent position, arranging the required additional land for construction purpose, p reparation of site, aligning, bending, lining up and welding the pipe, 100% radiographic inspection of weld joints, coating of field weld joints, holiday detection and repair of coating, hydrotesting (both pre- & post-installation) and replacement of pipes/ defect s, excavation of the trench to required depth, as per specifications, in all kinds of soil and conditions including rock trenching a nd maintenance of trench in all kinds of soil including rocky strata, if any, making bunds for stoppage of water flow, de-watering i ncluding installation of well-point system, and laying of the pipeline in approved trench, including de-watering, providing in-situ concreting at coated weld joints to effectively secure the HDPE conduit with mainline pipe, providing ""Band IT"" make stainless ste el (SS) strips / clamps of 3/4"" width for tying HDPE conduit with mainline pipe (two strips per pipe length), backfilling and final clean-up, stabilisation of the excavated banks by additional means, disposal of waste and surplus in accordance with the contract, and supply of materials (other than those specifically undertaken to be supplied by the Owner under the contract) necessary for or i n the performance of the work or for temporary or permanent incorporation in the works and all other acts, matters and things nec essary to complete the pipeline/ crossings in all respects according to the contract and as per directions of Site Engineer/ Enginee r-in-Charge. NOTE : I)Depending upon the site condition & location of each submerged crossing, the Engineer-in-Charge, in consultation with the Contract or, shall decide upon the precise operations necessary for the performance of the work to lay the pipeline across the canal/ drain/ rivers and the cost of all such operations necessary shall be deemed to have been included in the rate for this item. II)Profile of drain / canal bed, ground & top of laid pipe shall be established jointly in presence of Owner both before and after l aying the crossing, by taking levels with reference to nearby permanent structure. III)The banks of the crossing shall be stabilised and suitable brick/ stone masonry bank protection works shall be carried out for t he entire ROW width to prevent bank erosion leading to exposure of the pipeline. The procedure for such measures shall be submitted for Owner's approval prior to execution. IV)Concrete sheathing work for submerged crossings shall be paid for separately under relevant item of Schedule of Rates." | | |
| 5 | "Laying pre-coated pipes in Water Logged/High Water Table Areaincluding providing all equipment, works,labour, inputs and materials/ consumable necessary to perform and complete the work in allrespects, submission of construction procedure for Owner's approval,arra nging the required additional land for construction purpose,preparation of site including dewatering, aligning, bending, lining upan d welding the pipe, 100% radiographic inspection of weld joints,coating of field weld joints, holiday detection and repair of coatin g,hydrotesting testing and replacement of pipes/ defects, excavation ofthe trench to required depth in all kinds of soil and conditi onsincluding rock trenching and maintenance of trench in all kinds of soilincluding rocky strata, if any, and laying of the pipeline in approvedtrench, backfilling and final clean-up, stabilisation of the excavatedbanks, disposal of waste and surplus in accordance with the contract,and supply of materials (other than those specifically undertaken to besupplied by the Owner under the contract) necessary for or in theperformance of the work or for temporary or permanent incorporation inthe works and all other acts, matters a nd things necessary to completethe work in all respects according to the contract. NOTE:1. Depending upon the site condition, the Engineer-in-Charge, inconsultation with the Contractor, shall decide upon the precise operations necessary for the performance of the work to lay the pipeline across the canal/drain/rivers and the cost of all such oper ationsnecessary shall be deemed to have been included in the rate for this item." | | |
