Kolkata Municipal Corporation Tender

BUILDING WORKS ( C ) Brickworks,Concrete Works etc B. CONCRETE WORKS 1. Cement concrete with graded jhama khoa (30 mm size) excluding shuttering In ground floor and foundation (b) 1:4:8 proportion

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)

22.Construction of gullypit 1100mmX625mm. inside measurement and depth of invert 1500mm. below G.L. with 250mm. thick cement brick work (1:4) over 100mm. 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 cement concrete (mix 1:1.5:3) with reinforcement as per standard drawing, brickon-edge flooring in the invert, 20 mm. thick cement plaster (1:4) finished fine with 1.5 mm. thick neat cement in the inside of walls and invert including supplying, fitting and fixing R.C.P.C. gully grid (15-M.T.load bearing capacity) and 225 mm. dia. C.I. Syphone including cutting hard crust, excavation, dewatering, back filling and removal of spoils as per standard drawing

21.Construction of special inspection pit with chamber of size 900mm. X 600mm. x 1500 mm (inside measurement) and 450mm X 450mm. square shaft (inside measurement) with 250mm. thick 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 (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 1.5 mm. thick neat cement in the inside walls and invert including supplying, fitting and fixing R.C.P.C. cover and frame (15 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, dewatering, backfilling and removal of spoils but excluding shoring as per standard drawing .(depth of invert should not be less than 1.80m below G.L.) i) Average depth of invert 2.00 m. below G.L.

21.Construction of special inspection pit with chamber of size 900mm. X 600mm. x 1500 mm (inside measurement) and 450mm X 450mm. square shaft (inside measurement) with 250mm. thick 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 (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 1.5 mm. thick neat cement in the inside walls and invert including supplying, fitting and fixing R.C.P.C. cover and frame (15 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, dewatering, backfilling and removal of spoils but excluding shoring as per standard drawing .(depth of invert should not be less than 1.80m below G.L.)

23.Construction of Catch pit 600mmX525mm. (inside measurement) and depth of invert 1000mm. below G.L. with 250mm. thick cement brick work (1:4) over 100mm. thick jhama cement concrete (1:4:8) bed over a layer of brick flat soling including providing 100mm. thick R.C.C. slab with ordinary cement concrete (mix 1:1.5:3) with reinforcement as per standard drawing, brickon- edge flooring with 20 mm. thick cement plaster (1:4) finished fine with 1.5 mm. thick neat cement in the inside walls and invert including supplying and fixing R.C.P.C. gully grid (5 M.T.load bearing capacity) and 150 mm. dia. C.I. Syphone including cutting hard crust, excavation, dewatering, back filling and removal of spoils as per standard drawing

Hire and labour charges for 3.75cm. thick close timbering with planks, battens,runners,struts etc. complete removing them incl. penetration of shoring as per direction of the Engineer-in-Charge upto 1 M. trench width. (Vertical surface of contact area with supporting earth to be measured, payment for penetration will not be allowed) a)  Depth upto 3.00 M below G.L.

Supplying, spreading and compacting Sand to required thickness, in layers not exceeding 150 mm to proper gradient and camber, inundating each layer by water and packing and ramming layer by layer to achieve desired compaction, including lighting, guarding, barricading and making adequate earthen bundh where necessary, curing with water as per direction, mending cracks and depressions by ramming wherever necessary. Note:- Add cost at site of the materials to arrive at the complete rate. The compaction factor for dry, clean sand may be taken as 0.835. (The payment is to be made on the basis of finished compacted volume). (c) For Silver Sand

Single Brick Flat Soling of picked jhama bricks including ramming and dressing bed to proper level and filling joints with local sand.

Water Bound Macadam Sub Base by consolidating Jhama metal / Laterite chelly or stone metal / shingles of specific size in hard crust to requisite thickness (measured after compaction) in layers including screening of metals etc. as necessary, hand packing, sweeping, watering and rolling in stages with power roller to proper line, grade and camber, lighting, guarding & barricading and making necessary earthen bundh of one metre width on each side where necessary to protect edges and preparing the bed by necessary cutting or filling and rolling all complete including the cost of all materials and hire and labour charges of all men and machineries and compacting to the required density, as per Clause 404 of Specifications for Road & Bridge Works of MoRT&H (5th Revision). (i) For Construction of Sub Base by consolidating Jhama metal  / Laterite (63 mm to 45 mm) (Moorum replaced with course sand)  (For compacted thickness 75mm)

BUILDING WORKS (B) DISMANTLING, CUTTING CHASE, HOLES ETC 13. Removal of rubbish,earth etc. from the working site and disposal of the same beyond the compound, in conformity with the Municipal / Corporation Rules for such disposal, loading into truck and cleaning the site in all respect as per direction of Engineer in charge

Sub Total

GST 18%

CESS 1%