Corporation Of Chennai Tender

Providing and laying in position ,Standardised Concrete Mix M-20 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 325 kg/m3 and m,aximum water cement ration of 0.55, 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.

Supplying, fabricating and placing in position Ribbed tor steel (RTS) for all RCC works as per design given including cost of steel and GI binding wire (18 G) in all floors etc., complete complying with standard specification (contractor has to make his own arrangements for the supply of steel and binding wire)

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

Brick work using best quality II class Ground moulded chamber burnt bricks of size 9" X 4-3/8" X 2-3/4" in cement mortor 1:6 for foundation and basement including curing etc complete complying with standard specification.

Plastering with cement mortar 1:4 (1 cement and 4 P sand)12mm thick including curing, etc., complete.

White washing two coats over new plastered surface.

Painting the new plastered walls with two coats of Exterior emulsion paint (weather proof ) first class quality and of approved colour over a priming coat including thorough scrapping,clean removal of dirt,etc.,complete and including necessary plaster paris,putty etc., wherever required.as per (ISI STD) (It must provide excellent resistance against the growth of algae and fungi on the walls. And it must offer excellent protection against alkali and UV degradation and the durability period should be 5 years.

Supplying and fixing M.S.Grills for OSR Land/Parks compound wall of design using 25 x 10mm MS flats for outer frame Horizontally & vertically. The inner vertical grills shall be 10x 10mm square rods at the spacing of 96mm c/c. The inner horizontal grills shall be 25 x 10mm MS flats adjoining 10 x 10mm square rods both sides at the spacing of 290mm c/c. The horizontal anchoring to wall shall be 20 x 5mm. The vertical anchoring shall be 25 x 10mm. The arrows with vertical shall be 20 x 5mm. (Sketch enclosed) and also as directed during execution

Painting new iron work two coats with ready mixed paint with relevent ISI STD of superior quality and approved colour.

Boring 150mdia upto hard formation and boring 115mdia below this in rock formation and inserting 125mnominal dia PVC (140 m OD) as per IS 12818/1992 casing pipe upto hard formation. The entire column to be cleaned at site as directed, including hire charges for the power rig for drilling the bores as directed above both upto hard formation and then in rock formation (including the cost of fuel charges, transporting to and fromthe power rig, etc., complete.)including flushing the bore using compressor,providing danger lights during night time, etc., complete.

Supplying and lowering PVC pipe 125mm dia plain casing pipe of 6kg/sq.cm. ISI Std.

Supplying and lowering PVC pipe 125mm dia slotted casing pipe of 6kg/sq.cm. ISI Std.

Conducting yield test as directed using `V’ Notch (CONSTRUCTION OF INDIA MARK-II DEEP BORE WELL PUMPS USING POWER RIG)

Supplying and Jointing 40mm dia P.V.C pipe.including cutting, threading and jointing with necessary specials fixing towall with clamps and screws including making holes in the wall or drilling holes in roof and making good the wall or roof after fixing with necessary scaffolding etc.,complete

Supplying & Jointing 25mm dia PVC pipe.including cutting, threading and jointing with necessary specials fixing to wall with clamps and screws including making holes in the wall or drilling holes in roof and making good the wall or roof after fixing with necessary scaffolding etc.,complete

Supplying & Jointing 20mm dia PVC pipe.including cutting, threading and jointing with necessary specials fixing to wall with clamps and screws including making holes in the wall or drilling holes in roof and making good the wall or roof after fixing with necessary scaffolding,etc.,complete.

Supplying and fixing P.V.C. screw down tap of size 20mm dia.

Supplying and fixing 25mm dia G.M check valve.

Supplying and fixing 25mm dia PVC ball valve.

Supplying and fixing 25mm dia G.M.Gate valve.

2.0 HP Submersible Pump