Kolkata Metropolitan Development Authority Tender

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

Supplying & laying Double Wall Corrugated (with external annular corrugation and smooth internal walls) High Density Polyethelene Pipes conforming to IS 16098 (Part-II):2013 having Stiffness Class of SN 8 with Ring Stiffness not less than 8.00 KN/Sqm. and Impact Resistance TIR value not more than 10% including necessary jointing materials for nonpressure underground Drainage, Sewerage & Cross drainage application. (i) 150 mm internal dia.

(ii) 200 mm internal dia.

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 3 M.T. R.C.P.C. manhole cover with frame 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)

Construction of Yard gully Pit of size 450 mm x 350 mm x 500 mm average depth [inside measurement] with 250 mm thick 1st class brick work in cement mortar[6:1] and bottom of the pit consisting of 75 mm thick jhama concrete[1:3:6]over a 1st class picked jhama brick flat soling including supplying, fitting and fixing 3 Mt. load capacity R.C.P.C. grating [Frame - 540 mm x 100 mm, cover 450 mm x 50 mm, weight approximate 47 kg] with cement concrete 1:2:4 with pakur variet stone chips and 15 mm thick pastering to inside and outside wall upto G.L., making invert with cement concrete1:3:6 with jhama khoa and 20 mm thick plaster in 4:1 to invert including 1.5 mm thick neat cement punning to all inside of the pit and top of the pit, complete as per direction of Engineer-in-Charge.

(vi) Light duty gully pit cover (yard gully) with with frame and hinge arrangement for opening of size Cover: 300 mm X 275 mm X 30 mm Frame: 450 mm X 375 mm X 75 mm opening: 300mm x 225mm Weight: 43 kg (approx)

Ordinary Cement concrete (mix 1:2:4) with graded stone chips (20 mm nominal size) excluding shuttering and reinforcement,if any, in ground floor as per relevant IS codes. (a) Pakur Variety

Neat cement punning about 1.5mm thick in wall,dado,window sill,floor etc. NOTE:Cement 0.152 cu.m per100 sq.m.

Supply of PVC pipes & fittings Schedule 80 (medium duty) conforming to ASTMD - 1785 and threaded to match with GI Pipes as per IS : 1239 (Part - I). (A) PVC Pipes (i) 50 mm dia.

Supplying, fitting and fixing PVC pipes for underground work of approved make of Schedule 80 (medium duty) conforming to ASTMD -1785 and threaded to match with GI Pipes as per IS : 1239 (Part - I). with all necessary accessories, specials viz. socket, bend, tee, union, cross, elbo, nipple, longscrew, reducing socket, reducing tee, short piece etc. fitted including cost of all materials ,jointing materials, cutting pipes, making threads ,cutting trenches upto 1.5 metre below surface in all sorts of soil and refilling the same as directed complete in all respect. (Payment will be made on the centre line measurement of the total pipe line including all specials No separate payment will be made for accessories, specials.) PVC Pipes (ii) 100 mm dia.

Sluice valve chamber with C.I. heavy cover with locking arrangement, (weight not less than 25 kg) (size of chamber 450 mm X 600 mm inside upto 900 mm depth) 250 mm thick cement brick walls (6:1), 150 mm thick cement concrete (6:3:1) bed with stone chips, 20 mm thick cement plaster (6:1) for inside wall and 15 mm thick cement plaster (4:1) for outer walls including rounding corners.

Supplying, fitting and fixing Peet's valve fullway gunmetal standard pattern best quality of approved brand bearing I.S.I. marking with fittings (tested to 21 kg per sq. cm.). (i) 100 mm dia.

Disinfection of water main by filling with water containing bleaching powder of sufficient quantity capable of maintaining a residual chlorine concentration of 10mg/l within the main after a detention period of two hours and flushing the same with fresh water all complete as per specification and direction of the Engineer-in- Charge. [After successful completion of the process, disposal of water and bacteriological testing of sample of flushed out water from the mains should be made at no extra cost (i) 100 mm dia Pipe

Cleaning silt of master trap pit.

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.

Add GST @ 18% on Total amount over item No. 1 to 17

Add Labour Welfare Cess @ 1% on Total amount over item No. 1 to 18