Drilling of Borewell for Vegetable Market Fruit Market and Food Grain Market Toilet Blocks 12 Nos at KWMC

Amount

Drilling of 12" dia vertical borewell so as to have a finished size of 6" dia borewell in boulder area to any required depth as decided by the TWAD Board Officers including Transportation from one place to anothr place with in Tamilnadu State by direct or reverse rotary mud circulation method using Contractor's rig tools, fuel, labourers, bentonite mud and water required for drilling at the site shown including construction of mud pit etc. using only calyx rigs.

300mm Dia

Drilling Bore well anywhere in Chennai city including transportation from one place to another place within alluvial soil or sedimentary rock clay and sand or stone pebbles, boulders etc., by first taking a pilot bore of 140mm/150mm/200mm and the enlarging to required depth direct or reverse rig fuel, drilling the betonite mud and water required for drilling by departmental officers including Specials,construction of mud pts. (water available with a lead of 1.50km)

140 / 150 mm dia Pilot Bore upto 60 m depth

140 / 150 mm dia Pilot Bore upto 60-90 m depth

140 / 150 mm dia Pilot Bore upto 90-100 m depth

Reaming from 200mm dia pilot bore upto 350mm dia bore as direct by the Engineer incharge From 60 m depth and upto 90 mt depth ending below ground level

300mm Dia

Reaming 140/150 mm dia pilot bore to 300mm dia bore as directed by the TWAD Board Officer

upto 60m length

60m to 90m length

90m to 100m length

Supply and laying following dia PVC casing pipe included Specials with excise duty as per IS 12818 / 1992

200mm dia CS ( plain pipe

200mm dia RS

150mm dia RS

Labour charges for inserting PVC casing pipes assembly (with slots or without slots) in the drilled hole including jointing the pipes with PVC couplers with cement paste included Specials etc., complete, supply and packing the annular space with pebbles of size and quality as approved by the Executive Engineer of Departmental officers.

200mm dia RS

200mm dia CS

150mm dia RS

Supplying and filling with river pebbles in annular space between bore and PVC pipe up to hard rock.

Charges for developing the borewell with air compressor of 300 CFM capacity (Minimum 8 Hours) including transportation labour and fuel charges for compressor as directed by TWAD Board Officers and conducting yield test by 'V' notch method.

Supply and erection of 2.HP Submersible Pump set using nylon rope including cost of motor , fixing necessary cable charges and Labour Charges etc., complete (For Bore Well)

SRM ENTERPRISES (BID ID -1386584)