Conversion of 25 nos of open well into protected and sustainable drinking water source in poruvazhy, sooranadu north ,sooranadu south UNDER package 1in kollam district

Clearing grass for 2 m square and removal of the rubbish up to a distance of 50 m outside the periphery of the area cleared then Earth work in excavation of 1.1 m diameter and 0.2 m depth by mechanical means (Hydraulic excavator) /manual means in foundation trenches or drains including dressing of sides and ramming of bottoms in all kinds of soil and Supplying, sieving, stacking and spreading 40mm broken stone in the excavated trenches for 30 cm height as per standard norms including cost of all materials then Providing and fixing of RCC ring 90mm diameter 3 numbers with RCC cover slab including all materials, labour, transportation etc complete and Supplying, sieving, stacking and spreading 20mm to 12.5mm size broken stone for 15 cm height and 10mm to 6mm size broken stone for 15 cm height inside the ring as per standard norms including cost of all materials. Supply and fixing of 15 m, 160mm PVC 6 kg/cm2 square gutter pipe at the edge of the sloped roof including and clamping / welding clamps for holding the gutter pipes in the position etc including cost of all specials and closures tees and labour charges and provided 15 m 90 mm PVC 6 kg/cm2 down pipe from the gutter pipe already fixed in position up to the filter pit and from filter pit to well including and clamping / welding clamps for holding the down pipes in the position etc including cost of all specials and closures tees and labour charges, Supply and fixing first flush valve of 90mm PVC including cost of tee, bend, etc, labour for dismantiling the well side wll at a depth of 30 cm to insert 90 mm PVC pipe and 5 m length at 40 cm depth for inlet to filter and making good after work, Earth work excavation in all classes of soil including dressing of side ramming of bottom lift up to 1.5 m and getting out the excavated earth 50m away from the edge of the trench etc and also care should be taken to protect the side wall of the well as per direction of departmental officials

Clearing jungle including uprooting of rank vegetation, grass, brush wood, trees and saplings of girth up to 30 cm measured at a height of 1 m above ground level and removal of rubbish up to a distance of 50 m outside the periphery of the area cleared

Earth work in excavation by mechanical means (Hydraulic excavator)/manual means over areas (exceeding 30 cm in depth, 1.5 m in width as well as 10 sqm on plan) including getting out and disposal of excavated earth lead upto 50 m and lift upto 1.5 m, as directed by Engineer-in-charge.All kinds of soil

Desilting open wells of dia above 3.5m and up to 6.0m and depth up to 10.5m by earth work excavation in or under water, after closing the inlet valves and plugging any holes in the steining by engaging divers with breathing accessories, bailing out water using pump set of suitable capacity, lifting the excavated silt/mud/clay using ropes, pulleys and buckets and disposing the same within minimum lead of 50 m from the periphery of the well, including engaging coolies for scrapping the inner side of the well, without causing any damages to the existing structures and installations, including hire and conveyance of tools and plant and as per the directions of the department officers etc. complete.

Bailing out water with 5HP engine and pump set including conveyance to the site, erecting, dismantling and taking back of engine and pump, cost of fuel lubricating oil and other stores pay of staff etc., complete.

Demolishing brick work manually / by mechanical means including stacking of serviceable material and disposal of unserviceable material within 50 metres lead as per direction of Engineer-in-Charge.In mud mortar

Demolishing stone rubble masonry manually / by mechanical means including stacking of serviceable material and disposal of unserviceable material within 50 metres lead as per direction of Engineer -in- Charges:In cement mortar

Solid block masonry using pre cast solid blocks (Factory made) of size 30x20x15 cm or nearest available size confirming to IS 2185 part I of 1979 for foundation and plinth with thickness 15cm in: CM 1:6 ( 1 cement :6 coarse sand) etc complete