Construction of 16 11 Nos Tubewells in Nalagarh Constituency of Solan District Sub Head Drilling lowering and assembly of Tubewell at 150 meters depth 3Nos 1 Gurdaspur 2 Dugri 3 Nangal Dhakka 145 meter depth 1No 1. Bhatoli 140 meter depth 2 Nos 1 S

Transportation of reverse rotary 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 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 of suitable sizes of bore as mentioned above from 0 to 30 metres below ground level with all leads and lifts.

Drilling of suitable sizes of bore as mentioned above from 30 to 60 metres below ground level with all leads and lifts.

Drilling of suitable sizes of bore as mentioned above from 60 to 90 metres below ground level with all leads and lifts.

Drilling of suitale sie o bore as mentioned above from 90 to 150 metres = 180 Rmt, 90 to 145 mtrs,= 55 mtrs , 90 to 140 metres = 100 mtrs and 90 to 125 mtrs =175 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.

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 5.2 and mechanical properties as per clause 6.1 and table 1 of IS 4270:2001 with upto date ammendments (if any) complete in all respects as per the directions of the engineer-in-Charge.

Supplying and lowering at site of IS marked Electric Resistance Welded plain bevelled ended steel pipe 300 mm dia nominal size housing, 8 mm thick having outside dia metre 323.9 mm butt welding plain ends 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.

Supplying and Lowering at site IS marked Electri resistance welded steels slotted pipe of size 300 mm dia nominal size 8 mm thick with slot opening 1.0 mm, as per IS 8110-1978 with upto date amendments(if any) and vbutt welding plain ends confirming to IS 4270-2001 with upto date ammendments (if any) about 4 mtrs to 7 mtrs in length, welded without any circumfrential joints, into bore hole in vertical position including cost of all scaffolding derricks, poles, clamps embended in foundation etc. including cost of all cutting, threding and welding of pipes etc. within all leads and lifts complete in all respect as per the directions of the Engineer-in-Charge.

Supplying and Lowering at site IS marked Electri resistance welded MS pipe of size 200 mm dia nominal size housing, 6.4 mm thick having outside dia metrs 219.1 mm screwed and socketted, confirming to IS 4270-2001 with upto date ammendments (if any) about 4 mtrs to 7 mtrs in length, welded without any circumfrential joints, into bore hole in vertical position including cost of all scaffolding derricks, poles, clamps embended in foundation etc. including cost of all cutting, threding and welding of pipes etc. within all leads and lifts complete in all respect as per the directions of the Engineer-in-Charge.

Supplying and Lowering at site IS marked Electri resistance welded steel sloted pipe of size 200 mm dia nominal size housing, 6.40 mm thick with slott opening 1.00 mm as per IS 8110-1978 with upto date ammendments (if any) and vbutt welding plain ends confiming to IS 4270-2001 with upto date ammendments (if any) about 4 mtrs to 7 mtrs in length, welded without any circumfrential joints, into bore hole in vertical position including cost of all scaffolding derricks, poles, clamps embended in foundation etc. including cost of all cutting, threding and welding of pipes etc. within all leads and lifts complete in all respect as per the directions of the Engineer-in-Charge.

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 as per direction of Engineer-in- charge.

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 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.

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