Source strengthening of various LWSS under JSV Sub Division Nalagarh Solan District HP Sub Head Drillling lowering of assembly and development of Tubewell 150 mtrs depth 2 Nos 125 mtrs depth 4 Nos and 120 mtrs depth 7 Nos Job No. 2

Amount

DRILLING OF T/ WELL ( 2 No.150 mtrs, 4 NO 125 MTR and 7 NO 120 MTRs Depth ) (As per Data sheet No. 1 ):- Transportation of Rig alongwith allied accessories etc.complete including errection and levelling at site through all kinds of roads, approaches fields etc.,in all leads and lifts upto site of work complete in all respects as per the directions of Engineer-in-Charge.

Drilling of bore as per specification laid down in IS-2800-1991 ( Part-1) with upto date ammendments (if any) with Direct Rotary/Reverse Rotary Rig satrting with 650-600 dia MS pipe reduced to 450-400 mm dia M.S pipe confirming to IS 4270-2001 with upto date amendments (if any) all kinds of soils boulders rocks collepsible strata saturated so as artesian conditions including the cost of all consumbales stores water fuel lubricants and other accessories etc. complete in all respects as per directions of Engineer-in-Charge.

Drilling and lowering of M.S.casing pipes confirming to IS-4270-2001 with upto date ammendments (if any) of suitable sizes as mentioned above from 0 to 30 metres below ground level with all leads and lifts.

Drilling and lowering of M.S.casing pipes confirming to IS-4270-2001 with upto date ammendments (if any) of suitable sizes as mentioned above from 30 to 60 metres below ground level with all leads and lifts.

Drilling and lowering of M.S.casing pipes confirming to IS-4270-2001 with upto date ammendments (if any) of suitable sizes as mentioned above from 60 to 90 metres below ground level with all leads and lifts.

Drilling and lowering of M.S.casing pipes confirming to IS-4270-2001 with upto date ammendments (if any) of suitable sizes as mentioned above from 90 to 150 metres below ground level with all leads and lifts.

Collection, preservation and display of suitable size sample box with top lid and locking arrangement till handing over of the tube well to the department, complete in all respects as per directions of the Engineer-in-Charge.

Supplying and lowering of IS marked Electric Resistance Welded M.S.Pipe 300 mm dia nominal size housing, 8 mm thick having outside dia metre 323.9 mm screwed end socketted, confirming to I.S.4270-2001 with upto date amendments(if any) about 4 metres to 7 metres in length, welded without any circumfrential joints, into bore hole in vertical position including cost of all scaffolding derricks, poles, clamps embedded in foundation etc. including cost of all cutting, threading and welding of pipes etc. within all leads and lifts complete in all respects as per the directions of the engineer-in-Charge.

Supply and Lowering at site electric resistance welded (ERW) Stainless Steel slotted pipe of size 300 mm, 8 mm thick with slot opening 1.0 mm, as per IS 8110-1978 with upto date amendments(if any) and material. complete in all respects as per directions of the Engineer-in-Charge.

Supply and Lowering at site electric resistance welded(ERW) Stainless Steel Cage type "V" wire wound screens of size 300mm 8 mm thick with slot opening 1.0mm as per 8110-2000 with upto date amendments(if any) and material specifications as per AISI "American Iron and Steel Inst" Type Grade SS-304 in suitable lengths as per the site conditions, including the cost of SS socket 8mm thick(supplied by the Department) of length 140mm confirming to AISI grade 304 suitable to accomodate screen end ring including jointing screen with blind pipes including cost of all scaffolding derricks, poles, clamps embedded in foundation etc.including cost of all cutting threading and welding of pipes etc.within all leads and lifts complete in all respects as per the directions of the engineer-in-charge. Screen will be of continuous trapezoidal wire spirally wound around fabricated cage. The wrapping wire having a "V" shaped(Wedge) profile wire with flat surface on the outside and producing expanding slots on the inside of various dimensions, resistance welded to a cylindrical body made of number of longitudinal special high tensile support rods to provide smooth unrestricted bore which are in turn welded into cylindrical ring couplings on both sides of screens.

Providing and fixing M.S taper/reducer as per length approved by Engineer-in-charge. The material of MS taper/reducer shall be equivalent to parent pipe material and shall confirm to chemical composition as per clause 6.1 and table 1 of IS 4270:2001 with upto date ammendments (if any) omplete in all respects as per the directions of the engineer-in-Charge.

Supplying and lowering of IS marked Electric Resistance Welded M.S.Pipe 200mm dia nominal size housing, 6.4mm thick having outside dia metre 219.1mm screwed end socketted, confirming to I.S.4270-2001 with upto date amendments(if any) about 4 metres to 7 metres in length, welded without any circumfrential joints, into bore hole in vertical position including cost of all scaffolding derricks, poles, clamps embedded in foundation etc. including cost of all cutting, threading and welding of pipes etc. within all leads and lifts complete in all respects as per the directions of the engineer-in-Charge.

Supply and Lowering at site electric resistance welded (ERW) Stainless Steel slotted pipe of size 200 mm, 6.40 mm thick with slot opening 1.0 mm, as per IS 8110-1978 with upto date amendments(if any) and material. complete in all respects as per directions of the Engineer-in-Charge.

Supply and Lowering at site electric resistance welded(ERW) Stainless Steel Cage type "V" wire wound screens of size 200mm 6.30mm thick with slot opening 1.0mm as per 8110-2000 with upto date amendments(if any) and material specifications as per AISI "American Iron and Steel Inst" Type Grade SS-304 in suitable lengths as per the site conditions, including the cost of SS socket 8mm thick(supplied by the Department) of length 140mm confirming to AISI grade 304 suitable to accomodate screen end ring including jointing screen with blind pipes including cost of all scaffolding derricks, poles, clamps embedded in foundation etc.including cost of all cutting threading and welding of pipes etc.within all leads and lifts complete in all respects as per the directions of the engineer-in-charge. Screen will be of continuous trapezoidal wire spirally wound around fabricated cage. The wrapping wire having a "V" shaped(Wedge) profile wire with flat surface on the outside and producing expanding slots on the inside of various dimensions, resistance welded to a cylindrical body made of number of longitudinal special high tensile support rods to provide smooth unrestricted bore which are in turn welded into cylindrical ring couplings on both sides of screens.

Providing and fixing M.S.centralized guides at suitable spacing for each tubewell as per IS-226-1991 with upto date amendments(if any) within all leads and lifts 1 Nos.complete in all respect

Supplying, lowering and fixing in position IS marked mild steel bail plug of 200mm/300mm dia meter with "U" hooks as per IS 2800-1991 with upto date amendments(if any) within all leads and lifts complete in all respect as per directions of the Engineer-in-Charge.

Providing and fixing in position threaded iron cap with locking arrangments of approved design to prevent foreign matter from getting into bore hole as required within all leads and lifts complete in all respects as per the directions of the Engineer-in-Charge.

Supplying and packing of gravel consisting of hard quartz or other suitable material with an average specific gravity of not less than 2.5 not containing more than 2% by weight of thin flat or or elangated pieces, shall be of sub rounded to rounded grains with minimum angular features of size 2--3.35 mm, shall be free from impurities such as shafe, shale, mica, felspar, clay, sand, hamatite and organic materials as per IS-4097-1967 with upto date amendments(if any), around intake of tubewell with minimum thickness of shroud around screen generally 100mm to the entire depth of the bore as per IS 2800(Part-I) 1991 with upto date amendments(if any) within all leads and lifts complete in all respects as per directions of the Engineer-in-Charge.

Development of tubewell by back washing method, with air compressor of minimum 750 CFM capacity, pumping pipe of 200mm size and air line of minimum 65mm size or with other suitable method, till the well is thoroughly developed as per clause 4.2 of IS 11189:1985 with upto date amendments(if any) complete in all respects as per directions of the Engineer-in-Charge.

Development of tubewell by continuous over pumping method with VT pumps/submersible pumps of suitable capacity not less than double the discharge established by the Compressor method/design discharge, untill the well is sand free as per IS-11189-1985 with upto date amendments(if any) complete in all respects as per directions of the Engineer-in-Charge. The draw down and discharge to be established by running the VT/submersible pump continuously for 8 hours in the presence of Officer not less than the rank of Assistant Engineer.

Testing the verticality of the tubewell as per clause 4.3 of OS 2800(Part-II):1979 with upto date amendments(if any), using plumb bob or plunger 6mm smaller in dia within the inside diameter of the well casing. The results of the verticality test shall be recorded on proforma shown in Appendix A of IS:2800(Part-II_:1979 with upto date amendments(if any) as appended with the tender documents and handed over complete in all respects as per directions of the Engineer- in-Charge.

Dismantling of Rig or other allied accessories after completion of job within all leads and lifts complete in all respects as per directions of the Engineer-in-Charge.

Handing over of the tubewelll in complete shape as per appendix B of the clause 7 of IS 2800 (Part-II):1979 with upto date amendments(if any)l, as appended with the tender document, in laminated form, in triplicate complete in all respects as per directions of the Engineer-in-Charge.

ABTAR SINGH AND COMPANY

RAJINDER SINGH