Kolkata Municipal Corporation Tender

Constructing catch pit to a depth of 1.0m (Insid(e) with 250mm th. 1st class Brick Work (1:4) in all sides over a layer of jhama brick soling & 100mm th. jhama cement concrete (1:4:8) including necessary earth work, providing approved type C.I. Syphone (150mm dia) with topping RCPC gully grid (5MT load bearing capacity) constructing invert with brick -on-edge, including 20mm th. inside cement plaster (1:4) finished with neat cement punning, at the top 100mm th. R.C.C. slab (1:1.5:3) with stone chips including necessary reinforcement, shuttering as per standard drawing and as directed by E-I-C complete in all respect and removal of surplus earth with all costs of labour and materials. Inside measurement of catch pit, 600mm X 525mm

24.Construction of manhole with chamber of size as given below as per requirement without shaft with cement brick work (1:4) over 150mm. Thick Jhama cement conc. (1:4:8) bed over a layer of brick flat soling including providing 150mm. thick R.C.C. slab with ordinary cement concrete (mix1:1.5:3) with reinforcement as per standard drawing over the chamber chamber, brick on edge flooring with ordinary cement concrete (mix 1:2:4) in the invert with 20mm. thick cement plastering (1:4) finished fine with neat cement 1.50 mm. thick in the inside walls and invert, including supplying, fitting and fixing R.C.P.C. manhole cover & frame (35 M.T. load bearing capacity) with ordinary cement concrete (mix 1:2:4) & C.I. steps (4kg. Each) including cutting hard crust, excavation, dewatering, back filling and removal of spoils but excluding shoring complete as per standard drawing .(Depth of invert shall be between 1.25 m. and 1.80 m. below G.L.).i) Average depth of invert 1.25 m. below G.L with 250 mm. thick brick work a) 150 mm to 400 mm dia having internal size (1500mmx750mm)

Manhole connection (upto 450 mm. dia.) including mending good all complete with (1:2:4) cement concrete as per specification and direction of Engineer-in-charge..

Sub Total

GST 18%

CESS 1%