Maintenance of RWS schemes at Amarpur under Gomati District Tripura/SH-Maintenance of water supply schemes in/c. maintenance of PVC, CI, DI and GI pipeline, washing of pipeline, fitting fixing of sluice valves, tyton collars, electrical equipments et

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 dia

ii)110 mm dia

iii)140 mm dia

Providing and fixing GI pipes of Medium class as per IS: 1239 with latest amendment complete with GI fittings including trenching and refilling, cutting and making good the walls etc. complete as per CPWD specification and direction of the Engineer-in-charge. A. External work. i) 25 mm dia nominal bore

ii) 40 mm dia nominal bore

iii) 80 mm dia nominal bore

iv) 100 mm dia nominal bore

Clearing of deposited iron in side of laying PVC pipe line in different dia (90/110/140 mm dia) in/c excavating trenching for 100 mtr lead pipe line of required width and depth after 20 mtr distance and 3.00 mtr long in every 100 mtr clearing through UPVC coil pipe and laying the same with necessary couplers and solvent cement etc. ( solvent cement and coupler etc. will be issued by the dept. at free of cost).

Clearing of deposited iron in side of laying CI pipe line in different dia (80/100/125/150 mm dia) and dismantaling old CI pipe in/c trenching , refilling etc. for 100 mtr lead pipe line of required width and depth cutting earth in 25 mtr distance and 12.00 mtr long in each i.e. 36 mtr trenches cutting for every 100 mtr pipe iron through UPVC coil pipe after clearing , washing, laying the same with rubber gasket , pipe lead joints as per direction of Engineer - in - charge ( pig lead will be issued by the dept. at free of cost and rubber gasket and T & P arrange by the agency).

Constructing masonry Chamber 90x90x100 cm, inside with 75 class designation brick work in cement mortar 1:4 (1 cement : 4 fine sand) for sluice valve, with C.I. surface box 100 mm. top diameter, 160 mm bottom diameter and 190 mm deep (inside) with chained lid and RCC top slab 1:2:4 mix (1 cement : 2 coarse sand : 4 graded stone aggregate 20 mm nominal size ) necessary excavation foundation concrete 1:5:10 (1 cement : 5 fine sand:10 graded stone aggregate 40 mm nominal size ) and inside plastering with cement mortar 1:3 (1 cement : 3 coarse sand) 12 mm thick finished with a floating coat of neat cement complete as per standard design (i) With Second Class bricks