Maintenance of RWS SCHEMES under Gomati District Tripura/ SH- Mtc. of PVC, CI, DI, and GI pipeline including extension and washing of pipeline, repairing of leakage, fitting fixing of sluice valves etc. in different water supply Schemes in Amarpur RD

"Charges for repairing of leakage in UPVC / HDPE pipe line with PVC coupler & solvent cement etc. including necessary earth excavation, backfilling of soil as required after laying of pipeline, in layers not exceeding 200 mm in depth including consolidating each deposited layer by ramming, watering etc. complete as per specification & direction of the Engineer-in-charge. i)90 mm OD

ii)110 mm OD

iii)140 mm OD

Making road crossing by horizontal boring for smooth laying of UPVC/CI/DI/GI pipes etc. of required dia complete as per specification and the direction of the Er. -in -Charge A) By manual means.

Excavating trenches of required width for pipes, cables etc. including exacavation for sockets, dressing of sides where required, ramming of bottoms, depth upto 1500 mm (slope-1 in 200)including getting out the excavated soil and backfilling of soil as required after laying of pipeline, in layers not exceeding 200 mm in depth including consolidating each deposited layer by ramming, watering etc. and disposing of surplus excavated soil with all required leads as per Chapter - 2 of CPWD specification and direction of the Engineer - in - charge. A) For UPVC pipes in new work . a. In all kinds of soil. i) For pipes not exceeding 90 mm dia

For pipes exceeding 90 mm dia but not exceeding 300 mm dia

Providing, fixing and laying rigid UPVC pipes conforming to IS: 4985 jointing with couplers of same class conforming to IS: 10124(Pt-II) with solvent cement conforming to IS: 14182 including testing of joints complete (but excluding the cost of specials like bend, tees etc. which will be paid separately ) as per CPWD specification and direction of the Engineer - in - charge. A. Class-3(working pressure 6.0kg/cm2 i)40 mm OD

ii) 90 mm OD

iii) 110 mm OD

iv) 140 mm OD