REPAIR/ REPLACEMENT OF SEWAGE LINES, SEPTIC TANK, MANHOLES AND SOAK WELL ETC AT PBOR/ MD ACCN AT 21 CSR DRONACHAL BASE UNDER GE DRONACHAL

Maintenance & clearing of blockage manually by rodding, pumping, etc for Water Closet (Indian or European), Wash Hand Basin, Nahani / floor traps, underground external sewage line (main/ branch sewage line) of any dia & any type in any position ,Soil/ waste pipe running on external wall of building including repair to leaking sewage CI pipe / CI traps with cement incl. fixing of SS grating using white cement ,fitting bends junctions etc. Gully traps, keeping the sewage line flow all time functional, refixing covers to manhole/ gully trap in position etc. after cleaning and removing the deposited sludge/ solid/ liquid material outside MD land, complete all as specified and directed by Engr-in-Charge.

Taking out (desilting) silt, Brick Bats, debris, liquid waste sludge in solid/ semi-solid state from Manholes upto depth of 1.50 mtr including pumping out sludge where ever necessary plugging diverting the flow in the drain, removing of silt/sludge in deposit away from the edge of manholes, by mechanical means such as jet auger and mechanical vacuum tank as directed including use of safety belt, mask, dry cells torch for lightening inside the manholes and taking similar precautionary measures and removing the sludge etc outside MD land in covered container and cleaning the manholes and surrounding with clean water, and closing the manhole with cover etc all as specified and directed:-

Desilting of septic tank / sewage tank at sewage pump house any size including cleaning and taking out mud/ sludge, scum, silt (both organic and inorganic nature) etc from septic tanks by mechanical means of any depth, in foul conditions and confined places including use of safety belt, mask, dry cells torch for lightening inside the tank and taking similar precautionary measures, getting out and removing the waste/ Sludge water shall be disposed off in closed container at authorized dumping site declared by local administration outside MD land as directed by Engineer-in-Charge complete all as specified and directed. Note: Net contents of sludge shall be measured at the time of removal and paid. Quoted rate of tenderer is deemed to be inclusive of dewatering as required and nothing extra shall be admissible to the contractor on this account.

Excavating in trenches n exc 1.5m wide and not exc 1.5m in depth for foundation and getting out in soft/ loose soil complete all as specified and directed.

Excavation in trenches n exc 1.5 Mtr wide and exc 1.5 M deep and getting out in any soil by using of mechincal plant or chisel cutting for shafts, wells, man holes and for sewage lines and foundation etc n exc 10 Sqm on plan all as specified.

(a) 150mm

(b) 200mm

Demolition of cement concrete in any floors and pavings not exc. 15 Cm thickness (below/above ground level) including floor finishes all as specified and directed