Maintenance of Existing Infiltration well at Anichampalayam Head Work in Velur Town Panchayat

Earthwork excavation above water level in light or sandy or clay soils for infiltration well of 4.50m Dia (Internal) including levelling the site and as directed by the departmental officers

Reinforced cement concrete 1:1.5:3 mix using 20mm ISS metal including cost and conveyance of all materials to site and all labour charges for mixing, laying, finishing and curing etc complete.

0 to 4.50m above GL (infiltration well)

Sinking well of 4.50m internal dia below water level including all incidental charges in loose / sandy soil using special tools and plants such as air compressor helmet etc. including bailing out water completeas per standard specifications.

First depth of 2.0m

Centering for soffits of RCC members or plane surface including shuttering, strutting to the centering and providing supports etc. complete for the following members using MS sheets of size 90x60cm and 'BG' 10 gauge stiffened with welded M.S. angles of size 25x25x3mm laid over silver oak (country wood) joists of size 10 x 6.5 cm spaced at about 90cm C/C and casurina props of 10 to 13 cm dia (spaced at 75cm C/C) for various heights and as directed by the departmental Officers. The centering should be removed after the specified striping time of the concrete as per IS-456/1978.

For Plane Surface ( Infitration well )

For Curved Surface ( Infitration well )

Supplying, cutting, bending, tying, fabricating and placing in position of steel rods for all RCC works including cost of steel and binding wire etc. The steel should conform to the relevant IS specification and supplied with test certificate (Fe.415 grade as per IS specification No.1786/1985 and as amended from time to time) for delivery at site of work including loading, freight, unloading, stacking, transit insurance charges, taxes etc. complete.

Infitration well