New Town Kolkata Development Authority Tender

Precast cement concrete blocks or lining units as per designed size and specification, with well graded stone metal aggrefate, including dressing, ramming, shuttering, finishing the top surface with 1:3 cement and sand mortar, curing, transporting and laying the blocks or linning units at worksite in position, over filter, layer, keeping a gap of 6 mm between the adjacent unit, by use of removal plyboard or non removale thermicil boards, with all leads and lifts, uncluding supply and carriage of all materials complete (The rate is exclusive of the cost of stone aggregate and its carriage upto site, Construction with has to add the cost of same from the SOR (PWD) to derive the consolidated rare.) Nominal Mix 1:1.5:3 with 20 mm down coarse aggregate.

Supplying ready mixed concrete of M 25 Grade with well graded stone chips of 20 mm nominal size containing designed quantity of cement per Cu.m of wet concrete produced in computerised batching plant under controlled condition using approved super plastisizer, designing concrete mix following I.S. 10262 and I.S. 456, transporting the mix with agitation in transit mixer to work site depositing the mix on a platform erected for the purpose at required levels of concreting and then placing the mix in its final location of form work compacting and curing the same complete as per specification & direction of the Engineer-in-charge including computerised batching plant transit mixer with all accessories vibrators etc. inclusive of all other incidental charges in this connection complete but excluding cost of hire charge of platform and its supporting staging which would be paid through separate item. [cement to be supplied by the Manufacturer/ supplier] In Ground Floor With approved concrete pump

Controlled Cement concrete with well graded stone chips (20 mm graded nominal size) excluding shuttering and reinforcement with complete design of concrete as per IS : 456 and relevant special publications, submission of job mix formula after preliminary mix design after testing of concrete cubes as per direction of Engineer-in charge. Consumption of cement will not be less than 300 Kg of cement with Super plasticiser per cubic meter of controlled concrete but actual consumption will be determined on the basis of preliminary test and job mix foumula. In ground floor and foundation. [using concrete mixture] M 20 Grade (i) Pakur Variety

Hire and labour charges for shuttering with centering and necessary staging upto 4m using approved stout ,props and thick hard wood planks of approved thickness with required bracing for concrete slab, beam, columns,lintels,curved or straight including fitting , fixing and striking out after completion works (upto roof of ground floor). 25mm to 30mm wooden shuttering in foundation without staging as per decision & direction of the Engineer-in-Charge.

Reinforcement for reinforced concrete work in all sorts of structures including distribution bars, stirrups, binders etc initial straightening and removal of loose rust (if necessary), cutting to requisite length, hooking and bending to correct shape, placing in proper position and binding with 16 gauge black annealed wire at every intersection, complete as per drawing and direction. For works in foundation and upto roof of ground floor/upto 4 m I. SAIL/ TATA/RINL

R.C.C. well ring made with cement concrete 1:1.5:3 with stone chips and 0.80% reinforcement (including the cost of shuttering and reinforcement) cast at site fitted and fixed in position after proper curing true to plumb in the well including jointing with cement mortar 1:2 complete as per direction. c) 75 mm thick and 1.5 metre internal dia. Cement for joint filling-8Kg/m

Bailing or pumping out water from foundation trenches. This item should be executed on the specific direction of the Engineer-in-charges when he is satisfied in his absolute discretion, that this has not been necessitated due to any fault on the part of the contractor (Payment, if permitted, will be made on the quantity of water calculated on the basis of initial and final water calculated on the basis of initial and final water level measured before starting and completion of each days work which necessitates a bailing / pumping of water from the trench. The final level of water to be measured, will depend on the level at which the day's work will be taken up. The rate includes any seepage water that may percolate in the trench during pumping)

Cement washing including cleaning and smoothening surface thoroughly (cement to be used @15 kg./100 sq.m. of surface for one coat and @25 kg./100 sq.m of surface for two coats): External surface (Ground floor)

Priming one coat on steel or other metal surface with synthetic oil bound primer of approved quality including smoothening surfaces by sand papering etc.

Painting with best quality synthetic enamel paint of approved make and brand including smoothening surface by sand papering etc. including using of approved putty etc. on the surface, if necessary : (a) On steel or other metal surface : With super gloss (hi-gloss) (i) Two coats (with any shade except white)

Add G.S.T. @18% from Serial 1 to 13

Add Labour Welfare Cess @1% from Serial 1 to 14