87663E8 REPAIRS AND MAINTENANCE OF WATER SUPPLY LINES IN ARMY AND AF AREA UNDER GE AVADI CHENNAI

Amount

BOQ UPLOADED ON 07 FEB 2022

SCH "A" PART-I (EXTERNAL WATER SUPPLY)

Earthwork in excavation by mechanical means (hydraulic excavator) in foundation trenches or drains (not exceeding 1.5m in width or 10 sqm on plan), including dressing of sides and ramming of bottoms, lift upto 1.5m, including getting out the excavated soil and disposal of surplus excavated soil as directed within a lead of 50m in any type of soil complete all as specified and as directed.

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

Taking up / down water mains of galvanised iron tubing including all fittings from trenches / walls / roof / floor etc., and removal from site under Sch of credit of the following bore of pipe complete all as specified and as directed.

Earthwork as required shall be measured and paid separately.

20mm bore of pipe.

25mm bore of pipe.

40mm bore of pipe.

50mm bore of pipe.

uPVC pipes of Sch 40 pressure rating with ISI marking with all fittings such as bends, elbows, tees, male adapter plastic threaded, reducing male adapter plastic threaded, union, female adapter plastic threaded etc., laid in trenches of the following bore of pipes complete all as specified and as directed.

Earthwork as required shall be measured and paid separately.

20mm bore of pipe.

25mm bore of pipe.

40mm bore of pipe.

50mm bore of pipe.

Taking up cast iron water mains (including all fittings), with spigot and socket ends and lead joints including burning out joints and recovering lead, from trenches and removal from site under Sch of credit of the following bore of pipe complete all as specified and as directed.

Earthwork as required shall be measured and paid separately.

150mm bore of pipe.

200mm bore of pipe.

250mm bore of pipe.

300mm bore of pipe.

Ductile iron pipes, spigot and socket joints of "K-9" class laid in trenches of the following bore of pipes complete all as specified and as directed.

Earthwork as required shall be measured and paid separately.

CI specials and lead joints as required shall be measured and paid separately.

150mm bore of pipe.

200mm bore of pipe.

250mm bore of pipe.

300mm bore of pipe.

Cast iron fittings such as Bends (any type, radius and angle) tapers 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) collars, caps and plugs as required, suitable for cast iron / ductile iron pipes upto 150mm bore of pipe, (flanged / socket) complete all as specified and as directed

Cast iron fittings such as Bends (any type, radius and angle) tapers 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) collars, caps and plugs as required, suitable for cast iron / ductile iron pipes 200mm to 300mm bore of pipe, (flanged / socket) complete all as specified and as directed

Cutting cast iron pipes in position for insertion of new tees, branches etc., of the following bore of pipes complete all as specified and as directed.

80mm bore of pipe.

100mm bore of pipe.

150mm bore of pipe.

200mm bore of pipe.

250mm bore of pipe.

300mm bore of pipe.

Run lead joints including spun yarn or tarred gasket for the cast iron / Ductile iron pipes, spigot and socket joints of the following bore of pipes complete all as specified and as directed.

80mm bore of pipe.

100mm bore of pipe.

150mm bore of pipe.

200mm bore of pipe.

250mm bore of pipe.

300mm bore of pipe.

Dismantling and taking up unserviceable sluice valve and removal from site under Sch of credit and provision of Cast iron sluice valve with flanged ends drilled with holes, Class PN 1.6, ISI marked (conforming to IS 14846) with stainless steel (AISI 410) non rising spindle, gun metal working parts with hand wheel and checknut, rubber gasket 3mm thick, mild steel nut, bolts and washers, necessary machining works of the following bore of pipe complete all as specified and as directed.

80mm bore of pipe.

100mm bore of pipe.

150mm bore of pipe.

200mm bore of pipe.

250mm bore of pipe.

300mm bore of pipe.

Dismantling and taking up unserviceable non return valve and removal from site under Sch of credit and provision of cast iron non return valve with flanged ends drilled with holes, Class PN 1.6, ISI marked (conforming to IS 5312) with rubber gasket 3mm thick, mild steel nut, bolts and washers, necessary machining works of the following bore of pipe complete all as specified and as directed.

80mm bore of pipe.

100mm bore of pipe.

150mm bore of pipe.

Dismantling and taking up unserviceable foot valve and removal from site under Sch of credit and provision of cast iron foot valve with flanged ends drilled with holes, Class PN 1.6, ISI marked (conforming to IS 4038) with rubber gasket 3mm thick, mild steel nut, bolts and washers, necessary machining works of the following bore of pipe complete all as specified and as directed.

80mm bore of pipe.

100mm bore of pipe.

150mm bore of pipe.

Dismantling and opening up in situ of Cast iron sluice valve, and removing old worn out spindle, check nut, gasket, gland rope, mild steel nut, bolts and washers, taken on Sch of credit and replacing the same with new suitable parts, with necessary machining worksassembling back and testing for proper function for the following bore of pipe complete all as specified and as directed.

80mm bore of pipe.

100mm bore of pipe.

150mm bore of pipe.

200mm bore of pipe.

250mm bore of pipe.

300mm bore of pipe.

SCH "A" PART-II (REPAIR TO HOT APPARATUS)

Taking down electric water heaters / geysers from its mounting, opening up as required for repair, reassembling after repairs and refixing, connecting and testing for satisfactory performance for the following capacities complete all as specified and as directed.

(a) Spares replaced in repair shall be measured and paid separately.

(b) Any damage occuring during the process of repair shall be made good by the contractor at his own cost.

Geyser 25 litres capacity

Geyser 50 litres capacity

Replacing of heating element of double tube type with cup type of circular / triangular shape including rubber washers suitable to fit in existing geyser without any water leakage for the following rating complete all as specified and as directed.

Heating element 1.5 kW rating.

Heating element 2.0 kW rating.

Replacing of heat proof rubber PVC gasket suitable to fit in existing geyser for the following capacity geysers complete all as specified and as directed.

Geyser 25 litres capacity

Geyser 50 litres capacity

Replacing of apparatus plate (geyser assembly) of copper complete with nuts, bolts and rubber washer to suit in existing geyser for the following capacity geysers complete all as specified and as directed.

Geyser 25 litres capacity

Geyser 50 litres capacity

Replacing of stainless steel inner tank 18 gauge heavy duty having pressure bearing capacity 4 kg / sqcm to suit in existing geyser for the following capacity geysers complete all as specified and as directed.

Geyser 25 litres capacity

Geyser 50 litres capacity

Replacing of thermostat to suit in existing geyser for the following capacity geysers complete all as specified and as directed.

Geyser 25 litres capacity

Geyser 50 litres capacity

Replacing of gun metal vertical non return valve to suit site requirement of 15mm bore of pipe complete all as specified and as directed.

Replacing of safety valve / high pressure valve to suit site requirement of 15mm bore of pipe complete all as specified and as directed.

Replacing of insulating material of glass wool complete all as specified and as directed.

Replacing of copper connecting pipe chromium plated 450mm long with two brass nuts and nylon washer to suit site requirement of 15mm bore of pipe complete all as specified and as directed.

Replacing of PVC connecting pipe, heavy duty braided, 450mm long with brass adapters to suit site requirement of 15mm bore of pipe complete all as specified and as directed.

Replacing of PVC connecting pipe, heavy duty braided, 600mm long with brass adapters to suit site requirement of 15mm bore of pipe complete all as specified and as directed.

R K ARUMUGAM

KRA Constructions