Providing deep borewell in Ambethkar nagar at ward no. 09 in Jayankondam municipality.

Amount

Drilling of Borewells anywhere in Tamilnadu including transportation from one place to another with in Tamilnadu in alluvial soil sedimentary strata of clay and sand stone shale pebbles boulders etc. By first taking a pilot bore of 140 mm/150mm dia and then enlarging to required dia direct or reverse rotary mud circulation method using rotary rigs, fuel, labour and drilling bentonite and water required for drilling at site ( Site will be shown by the TWAD Board Officers) including construction of mud pit.

a) Upto 60m depth below GL

b) From 60m to 90m below GL

c) From 90m to 120m below GL

d) From 120m to 150m below GL

e) From 150m to 180m below GL

Reaming from 150mm dia pilot bore to 300mm dia as directed by Officers.

a) Upto 60m depth below GL

b) From 60m to 90m below GL

c) From 90m to 120m below GL

d) From 120m to 150m below GL

e) From 150m to 180m below GL

Reaming from 300mm dia pilot bore to 400/450mm dia as directed by Officers.

a) Upto 60m depth below GL

b) From 60m to 90m below GL

c) From 90m to 120m below GL

d) From 120m to 150m below GL

e) From 150m to 180m below GL

conducting Electrical logging test including Transporting charges.

Supply delivery and conveyance of PVC pipes and specials at site

b) 200mm PVC plain pipe (CM)

c) 200mm PVC Ribbed screen pipe

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 etc., complete, supply and packing the annular space with pebbles of size and quality as approved by the executive engineers of TWAD Board

200mm casing pipe

Charges for developing the borewell with air compressor of 600 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.

ravikumar (BID ID -1391478)