Corporation Of Chennai Tender

Dismantling R.C.C.works,carefully clearing away the debris as directed during execution.

Providing and laying in position ,Standardised Concrete Mix M-25 Grade in accordance with IS :456-2000,using 20mm and down graded hard broken granite stone jelly for all RCC items of works with minimum cement content of 350 kg/m3 and m,aximum water cement ration of 0.50, including admixture (Plasticiser / Superplasticier) in recommended proportions as per IS:9103 to accelerate ,retard setting of concrete,improve workability without impairing strength and durability with about (5.0 cum) 7730 kg of 20 mm machine crushed stone jelly and with about (3.3 cum) 5156 kg of 10-12mm machine crushed stone jelly and with about (4.79 cum) 7670 kg of sand, nut excluding cost of reinforcement grill and fabricating charges,centering and shuttering and also including laying,vibrating with mechanical vibrators,finishing,curing,etc and providing complying with standard specification and as directed by the departmental officers. The coarse and fine aggregates to be used should comply with the requirements of IS Standrands.(No separate payment will be made by the Department for the excess usage of materials)

Supplying and erecting centering for sides and soffits including supports and strutting upto 3m high for plane surface such as RCCslab, rectangular beams,'TEE' or 'L' beams,lintels,bedblocks,staircase waists and landing slabs, landing beams ,canopy, etc.,with all cross bracings using mild steel sheets of a size 90x60cmx3.175mm and 10 gauge stiffended with welded mild steelangles of size 25x25x3mm for boarding laid over silver Oak(Country wood) joists of size 10x6.5cm spaced at about 90cm centre to centre and supported by casuarina props of 10 to 13cm dia spaced at 7.5cm centre to centre etc.,complete