Construction of Rain Water Harvesting Structure for Existing Defunct Bore well at ward no 13, Chinnakottakuppam Malaimedu Borewell and Samarasam Nagar Tsunami Quatres Near and Ward no 14 Thoppu Street Borewell in Kottakuppam Municipality

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 inclusive 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.

Supplying and fixing of precast concrete ring of 1.8m dia and 0.30m height with 50mm wall thickness with perforated on circumference of the well.

Towards filling of 40mm HGB metal including cost and conveyance of all materials and labours charges etc., complete as per standard specification

Towards filling of 20mm HGB metal including cost and conveyance of all materials and labours charges etc., complete as per standard specification

Supplying and filling in foundation, basement, etc with filling crushed stone sand in layers of not more than 15 cm thick well watered, rammed and consolidated etc. complete complying with standard specification and as directed by the departmental officers.

Supplying and fixing of precast concrete top cover of 1.8m dia with 50mm wall thickness with perforated on the cover.

Supplying and fixing in position best approved of BIS quality PVC rain water down fall pipes having a pressure of 4 kg. / sq.cm including cost of neceSORy PVC shoe, PVC bend, cast iron gratings of required diameter and special clamps, brass screws, nails, etc., and fixing of cast iron gratings at junction of parapet and the RCC roof slab including finishing neatly etc., complete. The rate shall be inclusive of cast of removable cast iron grating. The PVC pipe shall be fixed in wall with special type of “U” clamp at the centre of the pipe line in addition to those for more than 3.0 metre pipe length, etc., complete complying with standard specification and as directed by the departmental officers For Ground

Provision for Goods and Service Tax 18%