SPECIAL REPAIRS TO WATER SUPPLY AT DOMESTIC AND TECH AREA AT AF STN UTARLAI

Amount

Excavation in trenches as in any type of soil, not exc 1.5 mtr wide and not exc 1.5 mtr depth for laying of GI/CI pipe lines etc getting out including forming bottom surface to required level and gradient all as specified and directed by Engineer-in-Charge.

Returning and filling in excavated soil including spreading leveling, watering, well ramming in layers not exc 25 cm thick complete, all as specified and directed by Engineer-in-Charge.

Removing of excavated materials not exceeding 50 Mtrs and depositing at a level not exceeding 1.5 M above the starting point, all as specified and directed by Engineer-in-Charge.

Taking up or down 80/100 mm bore of CI/DI pipe line and connections complete all as directed by the Engineer-in-Charge. Note: Excavation shall be measured and paid seperately

S&F of GI pipe, "medium grade" ISI marked with all fittings laid in trenches and including taking up or down steel water tubing and connections complete all as specified and as directed for the following sizes:-

15mm dia of bore

20mm dia of bore

25mm dia of bore

50mm dia of bore

80mm dia of bore

Material and labour 80/100mm bore of DI pipe (Ductile iron pipe) spigot and socket ends, class "K-9" with rubber gasket (tighten joint) , laid in trenches including necessary cut to length to match the existing fitting/pipes or insertion of new DI specials complete all as specified and directed by the Engineer-in-charge Note: DI specials shall be measured and paid seperately

Supply and fix of Gun - metal globe or gate valve with iron wheel head, screwed both ends for iron pipes and for unions and fixing including taking down existing unserviceable valves complete all as specified and directed for following sizes:-

50mm dia of bore

40mm dia of bore

25 mm dia of bore

20mm dia of bore

15 mm dia of bore

Material and labour for CI/DI specials such as bends, tees, collars, tail pieces, straight/angle connecting pieces any type (flanged ends, socketed ends or flanged/socketed ends) complete suitable for CI/DI mains of sizes upto 200 mm complete all as specified and directed.

Supply and fixing in repairs of CI sluice valve with drilled flanged ends, stainless steel spindle with gun metal working parts with hand wheel, pressure type PN 1.0 including disconnection and removing the unserviceable sluice valves from the existing pipe line/valve chamber for the following sizes complete all as directed by the Engineer-in-Charge :-

80mm bore

100 mm bore

150mm bore

Dismantling the old valve pit chamber and construct valve pit chamber 1000x1000x1000 mm (internal ) with PCC block masonary valve chamber, PCC foundation, plastering and necessary earth work in hard/ dense soil, MS sheet cover 3.15 mm thickness along with angle iron frame of size 40 x 40 x 6mm with locking arrangement with necessary fixing materials like hinges, nut/bolts etc (valve chamber cover shall be opened in two halves) and painting to MS cover with one coat of red oxide and two coats of synthetic enamel paint etc all as specified and directed by Engineer-in-Charge. Note:-For reference Drg No. CEAA/TD/57 Sheet 1/1 dt 28 May 1992 with revision upto 31 Dec 1992 shall be followed in consultation with engr-in-charge.

All as per item No. 11.00 above but size of valve chamber is 1200x1200x1200mm (internal)

M & L for boring of holes upto 200 mm dia under road, pavement, hard standing by trenchless technology using ultra sound technique and necessary machine complete all as directed by Engineer-in-Charge.

Material and labour for repairing of valve pit chamber of any size by taking down the old plaster and 10mm thick in 1:4 mixed with water proof liquid in complete surface of valve pit and preparing of old steel surfaces and painting to MS cover with one coat of red oxide and two coats of synthetic enamel paint including removing debris/ sludge etc from valve chamber all as specified and directed by Engineer-in-Charge.

S&F in repair saddle piece made out of MS flat iron of size 50 x 6mm duly welded with 25 to 50mm dia GI socket and 2 Nos nut/bolts of suitable size/length, necessary rubber packing for branch connections for the sizes of 80 to 150mm dia CI/DI mains complete including necessary earth work all as directed by the Engineer-in-Charge

Devi Engineeing

M/S Tanisha Traders

Rasam Engg Co.

Anil Builders