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.)Average depth of invert 2.5m. below G.L. i) With 250mm. thick brick work c) Above 600mm to 900mm dia having internal size (1500mmx1500mm)

BUILDING WORKS ( C ) BRICKWORKS, CONCRETE WORKS Etc. A. BRICK WORKS 1. Single Brick Flat Soling of picked jhama bricks including ramming and dressing bed to proper level and filling joints with local sand. ( 3rd Corrigenda & addenda dated 04.06.2018)

8.a)   Supplying, fitting and fixing with cement jointing (3:1) salt glazed stoneware pipe including excavation of earth upto 1.5 metre depth in all sorts of soil both mixed or unmixed and refilling (but excluding cementing at bottom and sides) b) 150 mm dia