REPAIR /REPLACEMENT OF SEWAGE LINE, MANHOLES, SEPTIC TANK, BRICK DRAIN AND CERTAIN MISC B/R WORKS IN DOMESTIC AREA AT 20 WING AF STN UNDER GE (AF) BAGDOGRA.

Cleaning of blocked sewage line of 150mm bore of pipe by rodding with using steel rod or split bamboo stick thoroughly from inspection chamber to manhole or from both sides between manhole to manhole or from manhole to septic tank of any depth till clear flow of sewage line is observed complete all as specified and directed.

Cleaning of blocked sewage line of 100mm bore of pipe by rodding with using steel rod or split bamboo stick thoroughly from inspection chamber to manhole or from both sides between manhole to manhole or from manhole to septic tank of any depth till clear flow of sewage line is observed complete all as specified and directed.

M & L for cleaning of blocked EWC/IWC/Urinal/Bath, WHB, Sink etc by attending the complaint of Domestic area for day to day maintenance by way of cleaning, desludging forein materials as well as rodding of sewer line and keeping sewer in functional entering from floor trap, Water closet, soil waste pipe, gully etc upto first manhole with necessary T & P complete all as specified and directed. (Note :- Contractor should attend emergency complaint even after working hours including Sunday and holidays if found necessary).

Cleaning of septic tank/soak well, manhole etc completely (including de sludging and de watering) of solid and liquid sludge by pumping or mechanically means from inside the tank including spreading the bleaching powder stable having concentration of minimum chlorine content 65% Grade-I quality and removal of sludge materials out side MoD land complete all as specified and directed.

Cleaning of septic tank/soak well, manhole etc completely (including de sludging and de watering) of solid and liquid sludge by honey sucker and jet machine having sufficient capacity for effective depth upto 10 mtr including 20 HP submersible pump set with and suction hose pipes all fittings, safety equipment mobilization charges and removal of sludge materials outside MoD land complete all as specified and directed.

Excavation in trenches not exc. 1.5m wide and not exc 1.5m in depth for foundation or for taking out or laying pipe lines etc and getting out in soft/loose soil complete all as specified and directed.

All as per ser item No 6 above, but depth exc.1.50mtr but not exc.3.00mtr complete all as specified and directed.

Dismantling and breaking up drain pipes (Salt glazed stone ware or concrete) of 150mm dia (Internal), set in cement mortar including taking out from trenches if required with demolition of concrete bed and removing from the site complete all as specified and directed.

All Ser item No 8 above but 100 mm dia (Internal) complete all as specified and directed.

M & L for PCC (1:3:6) type C-2 using 40mm graded stone aggregates as in concrete bed to drain pipes including packing under and haunching against the side of pipes after they are laid, jointed and tested for 150mm bore of pipe lines complete all as specified and directed.