Construction, Drilling, Developing of Borewell in Cantonment Sadar Bazar area

Amount

Drilling 300/250 mm dia pilot bore in all strata by mud flush direct rotary rig/reverse rotary rig by using bentonite powder from 0.00 to 310 mtrs.

Reaming of 300/650mm Dia bore hole to follwing bore hole including assembling, jointing, lowering of housing casing strainer pipes and other assembling items with gravel packing and clay ball packing etc. (1) 650mm dia. Bore hole from 0.00 to 180 mtr

(2) 550 mm dia bore hole from 181 to 310 mtr.

charges for Electro logging for tubwell

Charges for mud cutting disposable by tanker day to day from site without staging at site

Supply of Cement

Labour charge for Cement Sealing.

Supply of Clay Balls having size of 25mm to 50mm

Lowering of 100mm dia drop line & 32mm dia Air line in the Drop line to Devlop each water bering Zone came across upto the depth of tubwell (size 200/250/300 mm dia depth up to 186mt.) for devlopment of tubwell by Air compressor.

Running of Aircompressor of 1100 CFM/300 PSI capacity (above the depth of 250Mt.). For zone wise development by drop line and air line method. The Air Compressor should run minimum for (six + Six) total twelve hrs or upto availabilty of sand free discharge

350 mm dia M.S. ERW pipes having min 7mm wall thickness with square edge finish conforming to IS 4270 and ISI marked With chapplas made from steel bent plates of size 200mm X 150mm X 8mm

250mm M.S. ERW pipes having min 7mm wall thickness with square edge finish conforming to IS 4270 and ISI marked With Chaopplas made from steel bent plates of size 200mm X 150mm X 6mm

250mm dia Johnson make continuous slotted filtraction strainer pipe having min tensil strength : 18 M.T. collapsible strength : 30 k/cm in slot opining of 1.00mm slot opening

Reducer 350mm X 250mm dia fixed reduser manfuctured from MS plate of min 8mm thickness as per drawing

MS bail plug 250mm dia X 7.00mm min thickness X 05 Mtr Length with welded cone at the bottom with 55mm length X 105mm windth 2900 nos. of slots in 3mtr Length of bail plug @ the bottom.

Well cape having 100mm hight made from MS plate with 3 Holes @ equal distence on circumference for nut bolts type locking arrengment with nut bolts & lock nuts of standerd make etc. complete (a) For 350mm ERW pipes ( Thickness of plate is minimum 06 mm for top also)

Clamp made from M.S. plate with 3 holes on each side with nuts & bolts of standerad make and suitable to 350mm dia pipe size 600mm X 100mm X 20mm.

FIELD MASTER ENGINEERING CO

MARUTINANDAN TUBEWELL