Provding and Installing of New Tubewell at water works Sandhwal underw/s scheme Hajipur

Amount

TUBEWELL

Drilling of borehole including collecting of soil samples at each change of strata. Drilling of bore hole will be carried out upto 150 mtr. depth of soil. Drilling of telescopic bore with Percussion Rig including collecting of soil samples for each change of strata. Drilling of bore hole will be up to level of potable water bearing strata sufficient for supplying water upto designed period of scheme of full depth which ever is lesser including collection of soil samples for each change of strata.

DRILLING OF BORE HOLE WITH PERCUSSION RIG:

25”(625mm) dia bore From 0 to 40 mtr. B.G.L.

22”(550mm) dia bore From 41 to 80 mtr.B.G.L.

18”(450mm) dia bore From 81 to 120 mtr.B.G.L.

15”(375mm) dia bore From 121 to 150 mtr.B.G.L.

Drilling of test bore hole including the rate for resistivity test to be paid only for the drilling depth if the tubewell is abandoned

Supplying, lowering of MS Pipe as per IS: 4270-2001 including MS sockets having dimensions as per IS code duly welded with MS electrode to have extra strength to lower the pipe into tubewell bore.

250mm nominal diameter (weight 52.3 kg per meter) 8.0mm thickness

Supplying, Fixing and lowering of Stainless Steel Cage type wire wound screen as per IS: 8110-2000 or latest ISI Marked duly welded with suitable grade SS welding electrode to lower the strainer into tubewell bore.

250 mm Steel Strainer (slot size 0.75) 7.30 mm thickness

Supplying, Lowering & fixing of M.S. special socket to connect S.S. Strainer to M.S. Pipe duly welded with suitable grade welding electrode complete in all respect.

250 mm internal diameter

Supplying, Fixing and Lowering of Stainless Steel socket as per IS 8110-2000 or latest or ISI Marked duly welded with suitable grade SS welding electrode to lower the strainer into tubewell bore complete in all respect.

250 mm internal diameter

Supplying and fixing mild steel centering guides made out of 32mm X 6mm thick M.S bar complete in all respect

a) Strainer & M.S. Pipe should be properly jointed with sockets and duly welded to ensure maximum strength of joint.

b) A steel strip of suitable size should be welded across the length of strainer to provide additional strength to the tubewell assembly.

Making electric logging of borehole with electronic well logger including cost of equipment at site etc.complete in all respects

Supplying at site Wooden box of suitable size with Lid & locking arrangment for preserving strata sample collected from the bore.

Supplying at quarry site of gravel of 1/6" to 1/8" sizes including pouring and packing in the annual space between the pipe assembly & the bore. The gravel should be free from dust, dirt, or the vegetable manner as per IS 4097-1967 with latest amendments (to be paid as per actual length of pipe) Note: The rates including loading & unloading charges. Carriage from quarry site will be paid as per actual

Collection of water sample from different strata and testing of sample from approved laboratory (Physical & chemical Analysis)

Supplying and fixing M.S well cap having thread to fix on housing pipe complete in all respect

250 mm internal diameter

Supplying & fixing of bail plug of M.S. pipe complete with inverted U-hook attached to the bottom plug complete in all respect.

250mm internal diameter (weight 52.30 kg per meter) 8.0 mm thickness

Supplying & fixing of M.S. Clamp of size 250mm x 12mm made out of MS Flat 1.52 m long, suitable to fit Housing pipe including the cost Nut & Bolts of Suitable size complete in all respect.

Development of stabillizing of the tubewell with air compressor of required capacity as directed by the engineer-in-charge including cost of tools, appliances & consumable to the satisfaction of Engineer-in-charge.

Capacity of Air compressor 550 cfm at 600 PSI

Development of stabillizing of the tubewell with submersible pump of required capacity as directed by the engineer-in-charge including cost of tools, appliances & consumable to the satisfaction of Engineer-in-charge.

Testing of water sample for Heavy metal from approved laboratory (Toxic material such as Arsenic, lead, mercury, pesticide etc.)

PUMPING MACHINERY

Providing & installing,testing & commisioning of 1 no electrically driven Submersible Pump set KSB / Crompton or equivalent make as per IS code capable of delivering 1280 LPM against a head of 80 mtr complete in all respects.

Providing and fixing electric pannel board consisting of electrical appliances such as star delta puch button or oil imeersed strarted main swtich VM, Ampere meter, ELCB, Shunt Capacitor. Single phase preventer, indicating lamps, kit-kat etc. complete in all respects.

Provision for Providing and Lowering G.I column Pipe of IS: 1239-2004 medium class size 100 mm i/d (in 3mtr lengths each with flanges, screwed and welded on both sides) rubber gaskets, nuts and bolts complte in all respects.

Providing and fixing Submersible cable (Finollex/ Havells or equivalent make) with copper conductor PVC insulated of 10.00 mm² size as per IS694-1990 reaffirmed 2000 complete in all respect.

PIPELINE FOR PUMPING MAIN

Providing, laying fixing and testing of M.S. Pipe as per 1239 and specials such as Tees, Bends, Sockets and elbows etc. in trenches in the ground including cutting, threading and testing etc. complete.

200 mm i/d M.S. pipe

Providing and fixing C.I/D.I Flanged end stem of SS (AIS 1410) and Bronze (gunmetal) working parts Sluice Valves ISI marked 14846-2000 Including jointing,testing&costs of nuts and bolts & insertion of sheet, all carriage complete (with approval of engineer in charge)

Providing and fixing ISI Marked Non-Returned Valves flanged end calss PN-1.0 as per IS 5312/2004 in Pipe Line including jointing and cost of nut bolts, rubber insertions complete. Note:- If non-return valve Calss PN -1.6 is used instead of class PN 1.0, then 5% will be paid extra.

Construction of masonry sluice valve chamber excluding Sluice valve cover as per standard design & drawings of public health department. Including Carriage.

Size 0.9 x 0.9 Mtr.

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