Name of Work: Drilling of borewell at Chrompet TE building,Chennai.
Sl. No.
Item Description
1
Transportation of mechanical drilling machine at site to dig up to 250 mm dia bore with all necessary accessoriesetc. complete.
2
Drilling of borewell in all types of soil upto ordinary rock (not requiring blasting ) , of required diameter using drilling rig rotary drill tools, labour for drilling etc. complete.
3
300mm dia bore upto 6.10m depth-20feet
4
230mm dia bore from 6.10m to 18.30m depth-60 feet
5
160mm dia bore from 18.3m to 30.5m depth-100 feet
6
160mm dia bore from 30.5m to 61.0m depth-200 feet
7
160mm dia bore from 61.0m to 76.2m depth-250 feet
8
160mm dia bore from 76.2m depth to 106.97m depth -350 feet
9
Supplying and lowering of TRUEBORE PVC PIPE of pressure class 6 Kg/Sqcm or equivalentof approved quality as directed by the Engineer-in-Charge.
10
250mm dia PVC pipe
11
175mm dia PVC pipe
12
125mm dia PVC slottered pipe
13
Providing and fixing 200mm dia MS end capwith necessary clamps.
14
Supplying and filling the sides of bore pipe with pebbles of required size
15
Flushing the borewell with air compessor till clean water is obtained as per the direction of the Engineer in charge
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