Kolkata Municipal Corporation Tender

25.Construction of manhole with chamber of size as given below as per requirement and 600mm X 600mm. (inside measurement) square shaft, with cement brick work (1:4) over 150 mm. thick jhama cement concrete (1:4:8) bed, over a layer of brick flat soling including providing 150mm. thick R.C.C.slab with ordinary concrete (mix 1:1.5:3) with reinforcement as per standard drawing over the chamber, brick-on-edge flooring with ordinary cement concrete (mix 1:2:4) in the invert with 20mm. thick cement plaster (1:4) finished fine with 1.5mm. thick neat cement in the inside walls and invert including supplying, fitting and fixing R.C.P.C. cover and frame (35 M.T.load bearing capacity) with ordinary cement concrete (mix 1:2:4) and C.I.steps (4 Kg. each) including cutting hard crust, excavation, de-watering, back filling and removal of spoils but excluding shoring complete as per standard drawing.(Depth of invert shall not be less than 1.80M below G.L.With 375 mm. thick brick work a) 150 mm to 400 mm dia having internal size (1500mmx750mm)

25.Construction of manhole with chamber of size as given below as per requirement and 600mm X 600mm. (inside measurement) square shaft, with cement brick work (1:4) over 150 mm. thick jhama cement concrete (1:4:8) bed, over a layer of brick flat soling including providing 150mm. thick R.C.C.slab with ordinary concrete (mix 1:1.5:3) with reinforcement as per standard drawing over the chamber, brick-on-edge flooring with ordinary cement concrete (mix 1:2:4) in the invert with 20mm. thick cement plaster (1:4) finished fine with 1.5mm. thick neat cement in the inside walls and invert including supplying, fitting and fixing R.C.P.C. cover and frame (35 M.T.load bearing capacity) with ordinary cement concrete (mix 1:2:4) and C.I.steps (4 Kg. each) including cutting hard crust, excavation, de-watering, back filling and removal of spoils but excluding shoring complete as per standard drawing.(Depth of invert shall not be less than 1.80M below G.L.)Average depth of invert 2.5m. below G.L.iv) Addition or reduction to rate of manhole as per above item for each addition or reduction in depth of 150mm. or part thereof. With 375mm. thick brick work (Depth of invert should not exceed 3.00M.) a) 150 mm to 400 mm dia having internal size (1500mmx750mm)

SECTION(B) - SANITARY AND DRAINAGE WORKS.(B)-(II) SOIL PIPE AND FITTINGS.(a) Original Works.(16.)Supplying, fitting and fixing with cement jointing (3:1) salt glazed stoneware pipe including excavation of earth upto 1.50 metre depth in all sorts of soil both mixed or unmixed and refilling (but excluding concreting at bottom and sides).(i) 300 mm