REPAIR AND MAINTENANCE OF OHT CLEANING OF SERVICE TANKS AND CERTAIN MISC B/R WORKS AT 58 SU AF STATION CHIMNEY HILL

Amount

Dismantling existing tanks of exc 250 litres and not exc 500 litres capacity and removing to stores or disposed off unserviceable tanks

Dismantling existing tanks of exc 500 litres and not exc 1000 litres capacity and removing to stores or disposed off unserviceable tanks

Dismantling existing tanks of exc 1000 litres and not exc 2000 litres capacity and removing to stores or disposed off unserviceable tanks

Supply and Fixing of 500 ltrs capacity rotational moulded polyethylene water storage tanks,Triple layers (cylindrical vertical with closed top) as per IS-12701-1996 hoisted and fixed in position all as specified and as directed.

Supply and Fixing of 1000 ltrs capacity rotational moulded polyethylene water storage tanks ,Tripe layers (cylindrical vertical with closed top) as per IS-12701-1996 hoisted and fixed in position all as specified and as directed.

Supply and Fixing of 2000 ltrs capacity rotational moulded polyethylene water storage tanks ,Tripe layers (cylindrical vertical with closed top) as per IS-12701-1996 hoisted and fixed in position all as specified and as directed.

Taking up or down 20 mm steel or CPVC tubing and connections, including cleaning for re-fixing or removal to store

Re fixing old steel Tubing and connections in new or old positions 20 mm dia, with all tube fittings (such as bends, elbows, tees, short pieces, connectors, backnuts, diminishing pieces, caps, plugs and unions, etc.) and fixing complete with clips, wall hooks, wooden plugs, or laying in trenches, etc., fitting and fixed complete to walls and ceilings or laid in floors.

S&F of CPVC pipes SDR 11 & plain CPVC SDR 11, 25 mm outer dia, with all tube fillings (such as bends, elbows, tees, short pieces, connectors, backnuts, diminishing pieces, caps, plugs and unions, etc.) and fixing complete with clips, wall hooks, wooden plugs, or laying in trenches, etc., fitting and fixed complete to walls and ceilings or laid in floors.

Taking up or down 25 mm steel or PVC tubing and connections, including cleaning for re-fixing or removal to store

Re fixing old steel Tubing and connections in new or old positions 20 mm dia, with all tube fittings (such as bends, elbows, tees, short pieces, connectors, backnuts, diminishing pieces, caps, plugs and unions, etc.) and fixing complete with clips, wall hooks, wooden plugs, or laying in trenches, etc., fitting and fixed complete to walls and ceilings or laid in floors.

S&L of CPVC pipes SDR 11 & plain CPVC SDR 11, 32 mm outer dia, with all tube fillings (such as bends, elbows, tees, short pieces, connectors, backnuts, diminishing pieces, caps, plugs and unions, etc.) and fixing complete with clips, wall hooks, wooden plugs, or laying in trenches, etc., fitting and fixed complete to walls and ceilings or laid in floors.

S&F in Repairs Gun Metal Globe or Gate Valves 20 mm dia size, with iron wheel head or any type, screwed both ends for iron pipe.

All as per above but 25 mm size

M &L for cleaning of PVC Service tanks at any height (on accessible /inaccessible roofs) by removing all scale ,dirt ,mud ,any foreign material,accumulated silt,other dirty substance ,algae,fungus and any other bacterial material from sides/bottom of tank ,cleaning shall be done by draining /pumping out water /sludge from bottom, by high pressure water jet of pressure not less than 120 PSI for removing clogged mud /scales etc and cleaning the same again with self priming pumped water and disinfecting the water tank by using UV radiator and approved chemical (chlorite),after cleaning writing letter of size not less then 6 CM /figures (Date of cleaning and next due date of cleaning) on black back ground with white synthetic enamel paint including removing existing letter/figures complete all as specified and as directed for water tank of capacity exceeding and equal to 250 ltrs and not exceeding and equal to 500 ltrs complete all as specified. Note: (i) Water shall be supplied by contractor for cleaning of service tank. (ii)Cleaning of Terrace/roofs by water after cleaning of service tank shall be done by contractor at any no extra cost.

All as per Item No 15 but of Capacity exceeding 501 Ltrs and not exceeding and equal to 1000 Ltrs .

All as per Item No 15 but of Capacity exceeding 1001 Ltrs and not exceeding and equal to 2000 Ltrs .

All as per Item No 15 but of Capacity exceeding 2001 Ltrs and not exceeding and equal to 5000 Ltrs .

Supply and Fixing of 25 mm bore Ball brass valve high pressure, with polythene float and fly nut complete suitable for screwed for existing GI Pipe all as specified and as directed.

S&F in Repairs PVC Water tanks Lids / covers with PVC Locking device for tank capacity in liters upto not exc 2000 litres.

Dismantling wrought iron or mild steel work of any description not otherwise provided for complete all as specified and directed.

M&L for framed work such as grills, gratings, gates etc with ends of bars shouldered and / or riveted or forged into spikes, framed guard bars, barred iron doors, ladders, framed balusters, walkways, railings, framework of water tank and similar works including fixing to channel section using MS bearing hinges to frame confirming to Fe-290 grade-E-165.

M&L preparation of new steel surface of any description over 10 cm width or girth and applying two coats of synthetic enamel paint over a coat of red oxide primer.

M&L preparation of old steel surface of any description over 10 cm width or girth and applying one coat of synthetic enamel paint complete all as specified.

Demolition of cement concrete (unreinforced) in ground floors & pavings n exc 15 cm thickness (below or above ground level).

M&L for cement concrete 100 mm thick type B-1,1;2;4 using (20 mm graded aggregate) as in Roof kerbs or mud stops finished even and fair and making impression white the concrete is green.

A.GOVINDARAJ (BID ID -3249788)

KUZHIKKAL ENTERPRISES (BID ID -3249901)

Aditya Associates (BID ID -3251245)

chowdeshwariconstructionco (BID ID -3249911)

M/S AMRITHESH ENTERPRISES (BID ID -3249694)

JM Engineering (BID ID -3249831)