Restoration of 16 vent Ellis Saddle Surplus apron from Vent No 1 to 16 at Mettur Dam in Mettur Taluk of Salem District.

Amount

Dismantling, clearing away and carefully stacking of materials useful for reuse for any thickness of plain cement concrete complete complying with standard specifications and as directed by the departmental officers.

Drilling holes 32mm dia to a depth of 1m in hard Granite and inserting the 25mm RTS L Shape anchor rod of 1.0m length for holding foundation and fixing in position with cement slurry inclusion of the cost of steel and labour etc., and complying with technical specification.

Supplying and erecting of steel centering for sides and soffits including necessary supports and strutting upto 3.00 M height for plane surfaces as detailed below in all floors with all cross bracings using Mild Steel sheets of size 90 x 60 cm and 10 BG stiffened with welded Mild Steel angle of size 25mm x 25mm x 3 mm for boarding laid over silver oak joists of size 10cm x 6.50 cm spaced at about 90 cm centre to centre and supported by casurina props of 10cm to 13 cm dia spaced at not more than 75 cm centre to centre etc. complete complying with the standard specificaiton. (Payment for centering shall be given after the concrete is laid)

Supplying, fabricating and placing in position M.S. (or) R.T.S. bar for reinforcement to all RCC works as per the design given including cost of steel and binding wire also in all floors.

Providing and placing in position of PLAIN CEMENT CONCRETE OF GRADE M15 ( Design Mix) using crushed broken hard coarse aggregate (Well graded) of nominal maximum size of using 60% of 40mm Size and 40% of 20mm size and downgraded to I.S Specified grading( To achieve the specified characteristic strength of 15 N/mm2 in 28 days) and mixing the ingredients in approved mixer including dewatering of the placement site by bailing / pumping and dewatering wherever necessary, placing concrete in layer and vibrating, water curing, finishing the surface with all leads and lifts etc., complete as directed by the engineer in charge of work and as per technical Specification.

Providing and laying in position, Standardised Concrete Mix M-30 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 cementcontent of 400 kg/m3 and maximum water cement ratio of 0.45, including admixture (plasticiser / superplasticiser) in recommended proportions as per IS:9103 to accelerate, retard setting of concrete, improve workability without impairing strength and durability with about (5.0 cu.m.) 7730 kg. of 20mm machine crushed stone jelly and with about (3.3 cu.m.) 5156 kg. of 10-12mm machine crushed stone jelly and with about (4.79 cu.m') 7670 kg. of crushed stone sand, but excluding cost of reinforcement grill and fabricating charges, centering and shuttering and also including laying, vibrating with mechanical vibrators, finishing, curing, etc. and providing fixtures like fan clamps in the RCC floor/ roof slabs wherever necessary without claiming extra, etc., complete 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 Standards. (No separate payment will be made by the Department for the excess usage of materials).

Supplying and fixing in position of bitumen felt 15mm thick pad for expansion joints in Plain Cement Concrete and Reinforced Cement Concrete complete complying with standard specification and as directed by the departmental officers.

K.RAJAGOPALAN AND CO