Demolition and ReConstruction of Storm water Drain of size 900 mm x 900mm at Mambalam High Road in Div-113 Unit-26 , Zone - 9

Picking Existing Black Top Surface upto 2 to 5 cm

Earth work Open excavation by Mechanical Means for Open Earthwork in all soils and sub-soils and to full depth as may be directed except in rock requiring blasting in clusive of shoring shuttering, bailing out water wherever necessary and depositing the surplus earth within the compound in places shown by the departmental officers with an initial lead of 100 mts and clearing and levelling including dressing of sides and raming of bottoms etc., complete complying with standard specification and as directed by the departmental officers. (Excluding Refilling)

Cement Concrete 1:5:10 (One cement, Five crushed stone sand and Ten hard broken stone jelly) using 40 mm gauge hard broken jelly for flooring including laying, consolidating, finishing, rendering the top surface rough to receive the floor, curing, etc. complete complying with standard specification and as directed by the departmental officers. (The rate is inclusive of necessary planking for panelling wherever necessary and as directed by the departmental officers - Mixing by mechanical means

Supplying and erecting steel centering including necessary supports for plane surfaces for Reinforced Cement Concrete works such as vertical slab, side slabs of boxing, vertical drops, facia, vertical wall, etc. using mild steel sheets of size 1200cm x 60cm and 10 BG stiffened with welded mild steel angles of size 40mm x 40mm x 5 mm for boarding, laid with silver oak joists of size 10cm x 5cm & 7.5cm x 5cm as support runner, Top Horizontal stiffener spaced at about 60cm to 90cm centre to centre or at suitable intervals. MS Channel Section (ISMC 100) shall be provided as a vertical support @1.20m C/C and with Lateral support of Steel Adjustable Telescopic Props of Size 2m x 2m (expandable upto 3.60m) & steel pipes of 20mm dia @ required level/spacing etc. complete complying with standard specifcation and as directed by the departmental officers. (Payment for centering shall be given after the concrete is laid) VERTICAL SLAB

Providing and laying in position, standardised concrete Mix M-20 Grade using In-situ Concrete batching plant/ Ready Mix Concrete (RMC) adopting weigh batch method in accordance with IS 456 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 maximum water cement ratio of 0.55, including admixture (plasticiser / super plasticiser) in recommended proportions as per IS:9103 to accelerate, retard setting of concrete, improve workability without impairing strength and durability with about (5 Cu.m) 7730 kg. of 20mm machine crushed stone jelly and with about (3.3 Cu.m) 5156 kg. of 1012mm 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 Conveyance of concrete from batching plant to Work site, Electricity charges and other works & labour cost involved for concrete production, 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, fabricating and placing in position Ribbed Tor Steel / TMT reinforcement grills of all variety like HYSD/CTD/TMTand all grade like Fe 500, Fe550D, Fe 500 D etc., for all RCC works as per design given including cost of steel reinforcement and G.I. binding wire, wastage etc. complete complying with standard specification and as directed by the departmental officers.(Contractor has to make his own arrangements for the supply of steel reinforcement and binding wire) Upto plinth / Basement level

Refilling with excavated sand complying with standard specification for filling in foundation and basement.

WORKING PRESSURE: 6 kg. per cm2 PVC Pipes 160mm dia

Providing Iron Barricading of size 2m width and 1 m height with 40mm dia MS Tubular pipe for vertical supports on both sides and three lines of barricading with 25mm size MS tubular pipe and 2 x 1m M.S. Sheet with name board of size 0.60 x 0.45 m size M.S.sheet (20 gauge) including Cutting, Welding, fabrication charges and one coat of primer and 2 coats of enamel paint of approved quality with fixing of indication with reflecting stickers and necessary interlocking arrangements with adjoining units and placing the barricading units as directed at the site for a period of 28 days. The M.S. Sheet barricading is a temproray barricading and can be removed and reused after the completion of work in a particular stretch.

Construction of cast -in- situ Silt Catch Pit of inner size 450 X 450 X 450 mm including necessary earth work excavation including providing foundation in PCC 1:5:10 under wall 150mm thick and fixing vertical grating of size 450mm x 155mm x 30mm on the storm water drain mouth with RCC cast in situ wall of size 120mm in RCC 1:1.5:3 with steel of 9.25 kg including fixing FRP Grating Cover with frame of size 550 x 550mm (clear opening 450 x 450mm) -10 MT -completing the finishing work etc.