Constructing catchpits with Rainwater Harvesting Structures in existing Storm Water Drains in Kosasthalaiyar basin in the extended areas of Greater Chennai Corporation Package 46

Amount

Bill - 1 : Construction of Canal

Desilting of Storm Water Drain

Construction of cast -in- situ Silt Catch Pit With Rain Water Harvesting Structure of inner size 600 X 600 x 600 mm including necessary earth work excavation including providing foundation in PCC 1:5:10 under walls 150mm thick and cutting the existing storm water drain of size 300 x 150mm for fixing 2 Nos of 160mm dia PVC pipe on the storm water drain mouth, with RCC cast in situ wall of size 120mm in RCC 1:1.5:3 with steel of 10.60 kg including fixing Ductile Iron grating hinged with frame Clear opening of size 600 x 600mm of class C-250 (Heavy Duty 25MT) - completing the finishing work etc., cost per each number. Using Hand Bore Set drilling of bore hole of 300mm dia upto 4.35m depth including shifting of the hand bore from one place to another place within 5 km and filling in with 40mm HBG metal with 200mmdia pvc pipe 6kg/cm2

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 cutting he existing storm water drain of size 300 x 150mm for fixing 2 Nos of 160mm dia PVC pipe 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 ncluding fixing Ductile Iron grating hinged with frame clear opening 450 x 450mm -25 MT -completing the finishing work etc.

Dismantling RCC Slab(reinforcement is being corroded) from Strom Water Drain - Steel is declared unfit for reuse

Supplying and placing of Ready Mix M20 Graded of Concrete confirming to IS 456/2000 for Reinforcement Cement Concrete Structural elements under controlled water cement ratio using 20mm and down ratio using 20mm and down graded machine broken granite stone jelly including transportation , pumping and Vibration charges excluding cost of centring and shuttering and reinforcement but including curing, finishing etc. as directed by the Project Manager or his representative

Supplying and erecting shuttering including necessary supports for plane surface in foundation and basement for RCC column footings, pin tool blocks, plinth beam, staircase steps, critical steps, critical piers,etc.,using mild steel sheets of size 90 x 60 cm and 10 gauge stiffened with welded mild steel angles 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 75cm centre to centre etc., complete.

Supplying and fabricating RTS / TMT STEEL rods including cutting, bending hooks, cranking, fabricating, assembling and laying in exact position, tieing with soft steel wire 16 gauge ,etc., complete conforming to BIS std.

Supplying and fixing of 24" FRC manhole cover with frame 600mm dia clear opening heavy duty as per IS:12592/2002. The frame & cover shall bear a non fracture load of 20MT for 30seconds with frame height of 165mm, cover height 90mm, Bearing (Seating area of cover)75mm with Hot Dip Galvanizing Hook of cover 16mm, frame edge protection flat of size 25 x 3mm exposed surface of M.S. rings shall be painted with anti corrosive bitumastic paint

Carting away the surplus earth/debris to a lead of 12km including Loading, unloading and dumping in the Corporation Land as directed during execution.

Providing as Built Drawing in Auto Cad format and GIS format

Supply and laying of RCC NP4 pipes 900 mm dia

Brick work in second class bricks (9"x4 3/8" x 2 3/4") in C.M.1:4 ( 1 cement and 4 M-sand) including curing,etc.,complete for 23cm thick walls upto basement (upto 1m high above G.L.).

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

Bill 3: provisional lump sum amount for shifting charges of utilities and tree plantation - bidder need not quote for this item of work.

R K and Sons