SPECIAL REPAIR TO CONVERSION OF MAIN WATER SUPPLY PIPE LINE FROM CI TO DI NEAR BASE HOSP, TCP AREA, DODA AREA AND KV AREA AND PROVN OF APPROACH FROM HOSHIAR VIHAR BHAGAT VIHAR AT BARRACKPORE UNDER GE BARRACKPORE

Amount

M&L for broken bricks hardcore of gauge not exceeding 63mm, deposited spread and levelled in layers not exceeding 15cm thick, watered and rammed to a true surface complete all as specified and directed.

M&L for PCC (1:4:8) type D-2 (using 40 mm graded crushed stone aggregate) as in foundation filling and mass concrete complete all as specified and directed.

M&L for brick work with sub class 'B' bricks locally available best quality straight or curved on plan exceeding 6m mean radius, built in cement mortar (1:4) complete all as specified and directed.

M&L for 75mm thick PCC (1:3:6) type C2 (using 40mm graded crushed stone aggregate) as in subbase of floor complete all as specified and directed.

Providing and laying at or near ground level factory made kerb stone of M-25 grade cement concrete in position to the required line, level and curvature, jointed with cement mortar 1:3 (1 cement: 3 coarse sand), including making joints with or without grooves (thickness of joints except at sharp curve shall not to more than 5 mm), including making drainage opening wherever required complete all as specified and directed.

Providing and laying 80mm thick factory made chamfered edge cement concrete paver block of M-30 grade with approved colour, design & pattern as in footpath, parks, lawns, drive ways or light traffic parking etc., of required strength, thickness & size/shape, made by table vibratory method using PU mould, laid in required colour & pattern over and including 50mm thick compacted bed of coarse sand, compacting and proper embedding/ laying of inter locking paver blocks into the sand bedding layer through vibratory compaction by using plate vibrator, filling the joints with fine sand and cutting of paver block as per required size and pattern, finishing and sweeping extra sand; complete all as specified and directed.

M&L for rendering 15mm thick in cement mortar (1:4) on brick work or concrete surfaces of wall, finished even and smooth without using extra cement complete all as specified and directed.

Excavation in trenches in soft / loose soil not exceeding 1.5 metre wide and not exc 1.5 metre in depth and getting out for taking out / laying of GI / DI pipe line and making bottom surfaces of excavation leveled and to a gradient complete all as specified and directed .

Excavation in trenches in Hard /dense soil not exceeding 1.5 metre wide and not exc 1.5 metre in depth and getting out for taking out / laying of GI / DI pipe line and making bottom surfaces of excavation leveled and to a gradient complete all as specified and directed .

Removing surplus excavated materials to a distance not exceeding 50m and depositing where directed at a level not exceeding 1.5m above the starting points in soft/loose soil complete all as specified and directed.

Returning, filling in, including spreading leveling, watering and well ramming in layers not exceeding 25cm, soil complete all as specified and directed.

Supply and laying GI tubing (Medium grade) of 50 mm bore, with all fittings in trenches or in floor including taking down old unserviceable pipe complete all as specified and as directed. (Note: Excavation, returning, filling & removing of earth work shall be measured and paid seperately).

Ditto all as per Item No. 12.00 above but 40mm bore complete all as specified and directed.

Ditto all as per Item No. 12.00 above but 25mm bore complete all as specified and directed.

Taking up or down Cast Iron/ Ductile Iron water mains of size 250 mm bore, any class including all fittings, with spigot and socket ends and rubber gasket joints, complete all as specified and directed. (Note: Excavation, returning, filling and removing of earth works shall be measured and paid seperately)

Supply and laying in trenches of DI pipe K7 of size 250 mm bore, with tighten joint spigot and socket ends complete all as specified and as directed including all required fittings. (Note: Excavation, returning, filling and removing of earth works shall be measured and paid seperately).

Taking up or down Cast Iron/ Ductile Iron water mains of size 100mm bore, any class including all fittings, with spigot and socket ends and rubber gasket joints, complete all as specified and directed. (Note: Excavation, returning, filling and removing of earth works shall be measured and paid seperately)

Supply and laying in trenches of DI pipe K7 of size 100mm bore, with tighten joint spigot and socket ends complete all as specified and as directed including all required fittings. (Note: Excavation, returning, filling and removing of earth works shall be measured and paid seperately).

Taking up or down Cast Iron/ Ductile Iron water mains of size 150mm bore, any class (including all fittings), with spigot and socket ends and rubber gasket joints, complete all as specified and directed. (Note: Excavation, returning, filling and removing of earth works shall be measured and paid seperately)

Supply and laying in trenches of DI pipe K7 of size 150mm bore, with tighten joint spigot and socket ends complete all as specified and as directed including all required fittings. (Note: Excavation, returning, filling and removing of earth works shall be measured and paid seperately).

Taking up or down Cast Iron water mains of size 80mm bore, any class (including all fittings), with spigot and socket ends and rubber gasket joints, complete all as specified and directed. (Note: Excavation, returning, filling and removing of earth works shall be measured and paid seperately)

Supply and laying in trenches of DI pipe K7 of size 80mm bore, with tighten joint spigot and socket ends complete all as specified and as directed including all required fittings. (Note: Excavation, returning, filling and removing of earth works shall be measured and paid seperately).

S&F of Sluice valve, both end flanged with CI operating wheel, stain less steel spindle etcas per latest IS specification, Class PN - 1.6 including necessory jointing and jointing materials such as gasket, nuts, bolts, washer etc complete of following size:-

Sluice valve of size 250mm dia

Sluice valve of size 150mm dia

Sluice valve of size 100mm dia

Sluice valve of size 80mm dia (Note for Item No. 24.00 to 27.00:- Three times water distribution of Approx timing 5.00AM to 7.30AM, 12:30PM- 1:30PM, 5.00PM-7.00PM is done through said pipe line which has been consider for spl repair in the said work. So, bidder has to do arrangement has to do the work is such a way so that there is no hampering in water distribution to users failing to this necessary suitable action will be taken)

Repairing of valve pit chamber after taking down cracked plaster and perforated MS cover and angle and complete with new plaster inside and outside of valve pit chamber fo any description max upto size of 1.2m X 1.2m X 1m and change of MS cover and angle. The steel surfaces shall be painted with to coats black bituminous paint over a coat of anti corrosive red oxide primer or complete all as specified and directed.

Construction of valve pit chamber with brick masonary with sub class 'B' bricks in cement mortar (1:6) and necessary PCC type D2 (1:4:8) as in foundation and 15mm thick plastering on brick work in CM (1:4) including necessary earthwork etc work having internal dimension 90cm x 90cm x 90cm and providing of 3.15mm thick MS sheet cover duly hinged on 40mm x 40mm x 6mm angle iron frame and embedded on top of chamber by minimum 4 Nos MS hold fast. Necessary locking arrangement shall be provided to the sheet cover for safety. The steel surfaces shall be painted with two coats black bituminous paint over a coat of anti corrosive red oxide primer complete all as specified and directed.

Construction of valve pit chamber with brick masonary with sub class 'B' bricks in cement mortar (1:6) and necessary PCC type D2 (1:4:8) as in foundation and 15mm thick plastering on brick work in CM (1:4) including necessary earthwork etc work having internal dimension 120cm x 120cm x 100cm and providing of 3.15mm thick MS sheet cover duly hinged on 50mm x 50mm x 6mm angle iron frame and embedded on top of chamber by minimum 4 Nos MS hold fast. Necessary locking arrangement shall be provided to the sheet cover for safety. The steel surfaces shall be painted with two coats black bituminous paint over a coat of anti corrosive red oxide primer complete all as specified and directed.

Cutting/Drilling pipe line of any description for connection/addition/inserting of following sizes pipe lines:-

15mm Dia

20/25 mm dia

M&L of PCC (1:3:6) type C2(Volumetric mix)(using 40mm graded crushed stone aggregate) as in filling/levelling of road/hard standing and mass concrete M-10 including necessary form work complete all as specified and directed.

S&F of gun metal gate valves with iron wheel head, screwed both ends for iron pipes of following sizes including taking down old unserviceable gate valve:-

50mm dia gun metal gate valve

40mm dia gun metal gate valve

25mm dia gun metal gate valve

S..S. ELECTRIC CO.

PRESCIENCE TECHNO INDUSTRIES

B.N. SADHUKHAN