Essential cleaning of underground sewerage system in whole compound of Bikash Bhavan with some necessary allied work, during the year 2025-2026.

Removing chokage of H.C.I. or S.W. pipe with split bamboo. (a) Underground

Cleaning silt of inspection pit

Cleaning rubbish, sludge, weeds scum, liquid earth, mud etc.etc.from road side masonary drain/ hume pipe drain/ culvert etc. by mathor labour after removing concrete.Slab/manhole cover etc.without damaging the same and refixing the same properly after cleaning as necessary and removing the sludge etc.etc.by using iron pans,buckets including all labour, tools & plants including removing the spoils in dry condition and disposing the same by truck beyond the road side in conformity with municipal/corporation rules for such disposal including loading into truck nd cleaning the road side in all respects as per direction of the Engineerin- Charge.

Constructing Inspection pit of inside measurement 600mm X 600mm X upto 600mm (depth) with 250 mm thick 1st. class brick work in cement mortar (1:4) on all sides, bottom of the pit consisting of 100 mm thick cement concrete (1:3:6) with stone chips over a layer of jhama brick flat soling, 15 mm thick (1:4) cement plaster to inside walls and out-side walls upto G.L. and 20 mm.thick (1:4) plaster to bottom of the pit, providing necessary invert with cement concrete (1:3:6) with stone chips as per direction, neat cement finishing to entire internal surfaces, top of the pit covered with 100 mm thick R.C.C. slab (1:1.5:3) with stone chips and necessary reinforcements upto 1% and shuttering including 6 mm thick cement plaster (1:4) in all external surfaces of the slab and one 560 mm dia. R.C.C. manhole cover of approved make supplied, fitted and fixed in the slab with necessary fittings, necessary earthwork in excavation in all sorts of soil, filling sides of the pit with earth and removing spoils after work complete in all respect with all costs of labour and materials. i) With Pakur variety. (SAIL/TATA/RINL)

Supplying, fitting and fixing in position reinforced cement polymer concrete manhole /gully pit cover with matching frame.As per I.S-12592(M.D) (i) 35 MT load bearing capacity round manhole cover provided with two lifter hooks fitted with matching frame of size Cover: 700 mm X 100 mm Frame: 900 mm X 200 mm Weight: 250 kg (approx)

(iii) 20 MT load bearing capacity round manhole cover provided with two lifter hooks fitted with matching frame of size Cover: 600 mm X 75 mm Frame: 750 mm X 150 mm Weight: 140 kg (approx)

(ix) Light duty gully pit cover (yard gully) with with frame and hinge arrangement for opening of size Cover: 275 mm X 230 mm X 30 mm Frame: 350 mm X 300 mm X 75 mm Weight: 14 kg (approx)

Supply of UPVC pipes (B Type) & fittings conforming to IS-13592-1992 (A) (i) Single Socketed 3 Meter Length (i) 160mm

(B) Fittings xi) Door Bend (T.S.) (a) 160 mm

Labour for fitting and fixing U.P.V.C. pipes for above ground work including cost of jointing materials etc. fitting and fixing all necessary specials, cutting pipes, cutting holes in walls or R.C. floor where necessary and mending good all damages excluding the cost of masonry or concrete work, if necessary, but including the cost and fitting and fixing holder bat clamps (any floor) or for underground work including cutting trenches upto 1.5 metre and refilling the same complete as per direction of the Engineerin- charge. (Payment will be made on centre line measurement of the total pipeline including specials. (A) Under ground (i)160 mm dia

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