SPECIAL REPAIR OF EXTERNAL WATER SUPPLY SYSTEM IN MD ACCN/OTM ACCN AND PROVN OF 18 CEILING FANS FOR TPS WAITING AREA AT BORJHAR UNDER GE GUWAHATI

Excavation in trenches, not exceeding 1.5m wide and not exceeding 1.5m in depth; taking out/laying CI/GI/PPR pipe etc. not exceeding 10sq.m on plan and getting out including forming bottom surface in soft/loose soil complete all as specified and as directed.

Removing excavated materials to a distance not exceeding 50m and depositing where directed at a level not exceeding 1.5m above the starting point, complete all as specified.

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

Taking up old UNSV cast iron water mains (including all fittings) of size 100 mm bore, with spigot and socket ends, tail pieces, sluice valves and lead joints including burning out joints and recovering lead complete all as specified and as directed.

Taking up old UNSV cast iron water mains (including all fittings) of size 80 mm bore, with spigot and socket ends, tail pieces, sluice valves and lead joints including burning out joints and recovering lead complete all as specified and as directed.

Supply, laying, jointing and testing centrifugally cast (spun) Ductile Iron pipes with spigot and socket ends (Class K-9) of 100mm bore (Heavy duty) conforming to the latest version of IS 8329 (equivalent to ISO 2531, Internal Lining: Cement mortar lining as per relevant standards (e.g., IS 8329, using Ordinary Portland Cement or Sulphate Resisting Cement as required), External Coating: External protection shall include a metallic zinc coating (at least 130 gm/m² or as specified) with a finishing layer of epoxy or black bitumen coating as per IS 8329 must be ISI marked (BIS certified) laid in trenches including rubber gasket (tyton ring) jointing material etc complete all as specified & as directed. Note :- Excavation & earthwork, DI fittings / PCC shall be measured & paid for separately under relevant items of this Schedule.

Supply, laying, jointing and testing centrifugally cast (spun) Ductile Iron pipes with spigot and socket ends (Class K-9) of 80mm bore (Heavy duty) conforming to the latest version of IS 8329 (equivalent to ISO 2531, Internal Lining: Cement mortar lining as per relevant standards (e.g., IS 8329, using Ordinary Portland Cement or Sulphate Resisting Cement as required), External Coating: External protection shall include a metallic zinc coating (at least 130 gm/m² or as specified) with a finishing layer of epoxy or black bitumen coating as per IS 8329 must be ISI marked (BIS certified) laid in trenches including rubber gasket (tyton ring) jointing material etc complete all as specified & as directed. Note :- Excavation & earthwork, DI fittings / PCC shall be measured & paid for separately under relevant items of this Schedule.

Supply and fixing, in repair, Ductile iron/cast iron specials of spigot/socket/flanged ends like bends ( any type, radius and angle) tapers of any type, straight, bend, increasing, decreasing or double socket etc , Tee pieces single branch, 'Y' junction, double branch cross ( all sockets or socket and spigot or flanged), collars, caps and plugs any shape etc for upto 300 mm dia pipes complete all as specified and directed. (Run lead joints shall be measured and paid seperately)

Supply and fixing in repair 100 mm bore cast iron flanged type sluice valve, (ISI marked), conforming to IS 14846-2000; Class PN-1.6 with stainless steel spindle and brass check nut (non raising spindle type) including all jointing materials and mild steel nuts, bolts, washers, rubber / fibre board gaskets (neouprene) etc and testing complete all as specified and directed.

Supply and fixing in repair 80 mm bore cast iron flanged type sluice valve, (ISI marked), conforming to IS 14846-2000; Class PN-1.6 with stainless steel spindle and brass check nut (non raising spindle type) including all jointing materials and mild steel nuts, bolts, washers, rubber / fibre board gaskets (neouprene) etc and testing complete all as specified and directed.

M&L for Cutting cast iron pipes of size 100/80 mm bore and reducing to required length before laying in position for insertion of new tees, branches etc taking branch connection complete all as specified and directed.

Taking up or down old UNSV 50 mm bore GI pipe and connection complete all as specified and as directed.

Taking up or down old UNSV 25 mm bore GI pipe and connection complete all as specified and as directed.

M&L for 50mm bore GI pipe medium grade water tube with all fittings like socket/union/Tee/Reducer/ Nipple etc laid in trenches /floor/pillar and connection in position complete all as specified and as directed. Note : Cost of earth work like Excavation, returing and filling and removal will be measured and paid seperatley under relevant item of schedule.

M&L for 25mm bore GI pipe medium grade water tube with all fittings like socket/union/Tee/Reducer/ Nipple etc laid in trenches /floor/pillar and connection in position complete all as specified and as directed. Note : Cost of earth work like Excavation, returing and filling and removal will be measured and paid seperatley under relevant item of schedule.

S&F 50mm Gun-metal, globe or gate valves confirming to IS with iron wheel head screwed both ends for iron pipe including taking down old unserviceable gate valve complete all as specified and as directed.

S&F 25mm Gun-metal, globe or gate valves confirming to IS with iron wheel head screwed both ends for iron pipe including taking down old unserviceable gate valve complete all as specified and as directed.

M&L for construction of brick masonry valve chamber of size 600x600x750mm (internal dimension) with one brick thick (230mm) wall built in CM (1:6), 150mm thick PCC (1:3:6) type C1 (using 40mm graded stone aggregate) as in foundation, 50mm thick PCC (1:3:6) type C1 (using 20mm graded stone aggregate) as in coping, 15mm thick rendering in cement mortar (1:4) both externally and internally, external plaster shall be up to 25cm below GL, MS sheet cover 3mm thick fixed with angle iron frame 30x30x4mm including hinges of size 125mm, handle and locking arrangement, embedded in PCC (1:2:4) type B-1 (using 20mm graded stone aggregate) including painting of MS cover with two coats of synthetic enamel paint over a coat of red oxide zinc chrome primer and necessary earth work in soft/loose soil complete all as specified and as directed.

M&L for construction of brick masonry valve chamber of size 1200x1200x1200mm (internal dimension) with one brick thick (230mm) wall built in CM (1:6), 150mm thick PCC (1:3:6) type C1 (using 40mm graded stone aggregate) as in foundation, 50mm thick PCC (1:3:6) type C1 (using 20mm graded stone aggregate) as in coping, 15mm thick rendering in cement mortar (1:4) both externally and internally, external plaster shall be up to 25cm below GL, MS sheet cover 3mm thick fixed with angle iron frame 30x30x4mm including hinges of size 125mm, handle and locking arrangement, embedded in PCC (1:2:4) type B-1 (using 20mm graded stone aggregate) including painting of MS cover with two coats of synthetic enamel paint over a coat of red oxide zinc chrome primer and necessary earth work in soft/loose soil complete all as specified and as directed.

Supply and fixing 1200mm sweep BEE 5 stra rated ceiling fan complete with brushless direct current (BLDC) motor class of insulation B, power factor not less than 0.9, service value (CMM/W) minimum 6.85 air delivery not less than 230 cum/min, 350 RPM (tolerance as per IS 374-2019), THD less than 10% including remote and electronic regulator unit for speed control and all remaining accessories including safety pin, nuts, bolts, washer, temparture rise =75 degree C (maximum), insulation resistance more than 2 megha ohm suitable for 230V, 50Hz, single phase AC, complete all as specified and directed.

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