REPAIR/ MAINTENANCE OF EXTERNAL WATER SUPPLY SYSTEM AND INSTALLATIONS INCLUDING CERTAIN ALLIED WORKS AT ALG TAWANG AREA UNDER GE 859 EWS

Excavation in trenches n.exc 1.5M wide and n.exc 1.5M in depth for taking out or laying of pipe etc, including forming bottom surfaces of trenches as required level/slope etc and getting out in hard/dense soil complete all as specified and directed.

Removing excavated soil to a distance not exc 50M and depositing where directed at a level n.exc 1.5M above the starting point.complete all as specified and directed.

Returning, filling in, including spreading, leveling, watering and well ramming in hard/dense soil in layers n.exc 25Cms in hard/dense soil complete all as specified & directed.

S&F in repair 3-layer PP-R P o l y p r o p y l e n e random copolymer) pipes 110 mm dia SDR 11 UV, PN 10 stablised and a n t i m i c r o b i a l welded having thermal stability for hot & cold water supply including all PP-R plain & brass threaded p o l y p r o p y l e n e random fittings fixed complete to walls, ceilings in floors or laid in trenches etc.including taking down of old pipe.

All as per item No -4 above but 75 mm dia.

All as per item No -4 above but 63 mm dia.

All as per item No -4 above but 50 mm dia.

All as per item No -4 above but 40 mm dia.

All as per item No -4 above but 32 mm dia.

S& F in repair 110mm outer dia PP-R Gate valve ( brass insert)complete all as specified and as directed.