REPAIR/MAINT/IMPV OF WATER SUPPLY INSTALLATION, BLDG, STORAGE TANKS, DISTRIBUTION MAINS AND ALLIED WORK AT KALIMATA AND 107 AREA AT LEBONG UNDER AGE (I) DARJEELING

Amount

Excavation in trenches n.exc 1.5m wide and n.exc 1.5 m in depth for foundation etc or for shafts, wells, cesspits, manholes, pier holes etc n.exc 10 sqm on plan and n.exc 1.5m in depth and getting out in soft/loose soil complete all as per specified and as directed by Engineer-in-charge.

Returning, filling in, including spreading, leveling, watering and well ramming in layers n exc 25cm complete all as per specified and as directed by Engineer-in-charge.

Removing excavated material not exc. 50 m & depositing where directed at a level not exc. 1.5 m above starting point complete all as per specified and as directed by Engineer-in-charge.

Taking out old existing galvanised iron water mains 20 mm bore (including all fittings) with spigot and socket ends and fittings for re-use in the work and removing unserviceable pipes and fittings from site complete all as per specified and as directed by Engineer-in-charge.

All as per serial item No.04 above but for pipe of size 25 mm.

All as per serial item No.04 above but for pipe of size 40 mm.

All as per serial item No.04 above but for pipe of size 50 mm.

All as per serial item No.04 above but for pipe of size 80 mm.

Refixing of 20 mm bore old steel tubing and connection in new or old position including cutting threads if required, fittings with old/new bends, elbows, socket, nipple, tapers, and reducers etc as per site requirement and laid in trenches or fixed to walls etc. and testing for leakages, complete all as per specified and as directed by Engineer-in-charge.

All as per serial item No.09 above but for pipe of size 25 mm.

All as per serial item No.09 above but for pipe of size 40 mm.

All as per serial item No.09 above but for pipe of size 50 mm.

All as per serial item No.09 above but for pipe of size 80 mm.

Supply and laying 20 mm bore steel water tubing GI medium grade, in old/new position or in place of PVC/PPR pipe as per site requirement with all fitting, laid in trenches or floors, walls and ceilings and testing for leakages, complete all as per specified and as directed by Engineer-in-charge.

All as per serial item No. 14 above but for pipe of size 25 mm.

All as per serial item No. 14 above but for pipe of size 40 mm.

All as per serial item No. 14 above but for pipe of size 50 mm.

All as per serial item No. 14 above but for pipe of size 80 mm.

Supply and fix in repairs of stop valve, cast copper alloy screwed down, high pressure with crutch or butterfly handle screwed both ends of size 20 mm bore, complete all as specified and directed by Engineer-in-Charge.

All as per serial item No. 19 above but for stop valve of size 25 mm.

All as per serial item No. 19 above but for stop valve of size 40 mm.

All as per serial item No. 19 above but for stop valve of size 50 mm.

S&F in repair gun metal globe or gate valve, with iron wheel head screwed both ends for iron pipe of 80 mm bore including dismantling unserviceable one, complete all as per specified and as directed by Engineer-in-charge.

S&F in repair 20 mm ball brass valves, high pressure, with polythene float and flynut complete, screwed for iron pipe or brass ferrule and fixed complete all as specified and as directed by Engineer-in-charge.

S&F in repair 25 mm ball brass valves, high pressure, with polythene float and flynut complete, screwed for iron pipe or brass ferrule and fixed complete all as specified and as directed by Engineer-in-charge.

M&L for cross arms, bracings, supports, clamps and back plates fabricated from structural steel sections including nuts, bolts, washers, welding, bending cold or hot, drilling holes for bolts, in any shape or size as indicated or directed and inclusive of one coat of red oxide primer and two coats of synthetic anamel paint, complete all as specified and as directed by Engineer-in-charge.

M&L for PCC (1:3:6) type C-1 ( using 20 mm grade crushed stone aggregate) as in in lintels upto 1.5m clear span, cills, steps; seismic and other similar bands, plinth courses, string courses, lacing courses, parapets and railings upto 60 cm in height, copings, kneelers, apex stones, bed plates, kerbs, water troughs and the like including weathering, slightly rounded or chamfered angles and throating complete all as specified and as directed by Engineer-in-charge.

M & L for applying two coats of Aqua Arm Top Guard inside of the wall & floor of the tank, a two components ready to use polymer modified cementatious coating. First Coat should be applied horizontzlly and second coat should be applied vertically and the thickness of coating shall not be less than 1.5mm, complete all as specified and as directed by Engineer-in-charge. Note: Work to be executed by the authorized applicator of manufacturer only.

M & L for applying two coats of Sikagard 67 or AquArm Tank Coat, a water based epoxy coating certified for portable water on all over the concrete surface from inside. Apply the first coat by brush allow it to dry for 6-8 hrs and then apply 2nd coat and allow it to cure after complete 24 hrs. The coating shall be applied using brush application. The Thickness after two coating should not be less than 500 microns, complete all as specified and as directed by Engineer-in-charge. Note: Work to be executed by the authorized applicator of manufacturer only.

M & L for repairing of Sluice valves of size 80 mm raising / non raising types after dismentling the same by replacing stem , gate/ disc , stuffing box, Seat, Gland packing, gland bush, gland falange, nutbolts, gasket, packing material, threading , welding as required for proper functioning of Sluice valves, complete all as specified and as directed by Engineer-in-charge. Note: Quoted rates inclusive of all the materials mentioned above like stem, gate/ disc, Seat stuffing box Gland packing, gland bush, gland falange, nutbolts, gasket, packing materia etc as required for proper functioning of the valves.

M&L for painting of sluice valve 80/100mm by using two coats of black synthetic enamel paint after scrapping /cleaning / preparing, complete all as specified and as directed by Engineer-in-charge.

M&L for painting of pipeline of 80mm bore by using two coats of (red/yellow/sky blue) synthetic enamel paint after scrapping / cleaning / preparing, complete all as specified and as directed by Engineer-in-charge.

M&L for repair/rectification of leakages to water supply distribution lines 20mm/25mm bore GI tubing with provision of necessary excavation, cutting of hard standing, returning and filling in as required, tightening of loose joints of union, elbow, sockets etc, threading if required including replacement of GI unions / sockets / nipples as required at site, complete all as specified and as directed by Engineer-in-charge. Note - GI fittings shall be measured and paid separately.

All as per serial item No. 32 above but for pipe of size 40-50 mm.

All as per serial item No. 32 above but for pipe of size 80 mm.

Collection & testing of water samples from pump houses situated at different location for bacteriological and chemical testing of water samples from approved Govt. Approved Labs as per relevent IS code, complete all as specified and as directed by Engineer-in-charge.

M&L for painting of water distribution header including all control valves and all exposed pipe of any size by using two coats of synthetic enamel paint after scrapping/cleaning, complete all as specified and as directed by Engineer-in-charge. Note:- The contract sum shall be calculated by deducting the amount shown in Credit Schedule attached to this tender, from total amount of Schedule 'A'/BOQ.

JALAPAHAR HARDWARE (BID ID -3371405)

TSHERING WANGYAL BHUTIA (BID ID -3370615)

HIRA SINGH (BID ID -3370318)

RAI CONSTRUCTION (BID ID -3369822)

THUKKEPA & PANGDOK (BID ID -3367934)

Darjeeling Enterprises (BID ID -3372235)