Drilling, Lowering of assembly Development of Tubewell 90m deep (DTH Method) including chamber and with MSERW Pipe Casing along with lift irrigation components under HPCDP (Phase-II) JICA-ODA.

Earth work in excavation by mechanical means (Hydraulic excavator) / manual means in foundation, trenches or drains, pits upto all depths in all classification of earth work such as pick work, jumper work, saturated soil including bailing and pumping out water, chieselling soft / hard rock including dressing of sides and ramming of bottoms, including getting out the excavated soil and disposal of surplus excavated soil as directed, within all leads and lifts complete in all respect and to the entire satisfaction of the Engineer-in-Charge.

Providing and laying in position cement concrete 1:4:8 (1 Cement: 4 coarse sand : 8 graded stone aggregate 40 mm nominal size) and curing complete excluding the cost of centering and shuttering complete in all respect within all leads and lifts and to the entire satisfaction of the Engineer-in-Charge.

Brick work with common burnt clay F.P.S. (non modular) bricks of class designation 7.5 in foundation & plinth in all shapes and sizes Cement mortar 1:6 (1 cement : 6 coarse sand) complete in all respect within all leads and lifts and to the entire satisfaction of the Engineer-in-Charge.

15 mm cement plaster on the rough side of brick wall in cement mortar 1:4 (1 cement: 4 Coarse sand) complete in all respect within all leads and lifts and to the entire satisfaction of the Engineer-in-Charge.

Providing and installation of India Mark-III (65 mm),India mark-II (50mm) & India mark-II extra deep (32mm) deepwell handpumps as per IS:13056-1991 along with its up to date amandments and IS:9301 respectively comprising of following items:Transportation of suitable truck/tractor mounted DTH/Odex attachement/Precussion Calyx/RC portable rigs inculding levelling etc. complete in all respect within all leads and lifts and to the entire satisfaction of the Engineer-in-Charge.

Drilling bores of 165mm/152mm dia as per IS-2800-1979 (IS 2800 (Part-1):1991 Re-affirmed 2001) from ground level in the over-burden of the Engineer-in-charge/hydrologist with DTH rig for drilling through rocky formation consisting of sandstones,limestones,dolomites,sedimentary,conglomerates,metamorphic and igneous rocks,including cost of consumable stores,bits,water POL etc. complete in all respects as per the directions of the Engineer -in -Charge.

From 0 to 10 mts=1*10=10 Rmt.

Above 10 mtrs=1*80=80 Rmt

Collection,preservation and display of suitable size sample box with top lid and locking arrangment till handing over of the tubewell to the department complete in all respect within all leads and lifts and to the entire satisfaction of the Engineer-in-Charge.

Supply and lowering of IS marked Electric Resistance Welded M.S. pipe 125 mm dia nominal size housing, 7.1 mm thick bevelled edge confirming to I.S. 4270-2001 with up-to date amendments, if any ,about 4 mtrs to 7 mtrs in length, welded without any circumferential 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 of IS marked Electric Resistance Welded Slotted M.S.pipe 125 mm dia nominal size housing,7.10 mm thick bevelled edge confirming to I.S. 4270-2001 with upto date amendement,if any,about 4 mtrs to 7 mtrs in length,welded without any cicumferential joints,into bore hole in vertical position 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.

Providing and fixing M.S. taper / reducer as per lengths approved by Engineer -in-Charge ,the material of M.S taper/reducer shall be equivalent to parent pipe material and shall conform to chemical composition as per 4270-2001 with upto date ammendments ,if any, within all leads & lifts complete in all respects as per the directions of the Engineer -in -Charge.

Supply and lowering of IS marked Electric Resistance Welded M.S.pipe 100 mm nominal size housing, 7.10 mm thick bevelled edge confirming to I.S. 4270-2001 with up-todate ammendments, if any ,about 4 mtrs to 7 mtrs in length, welded without any circumferential 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 & lifts complete in all respects as per the directions of the Engineer -in -Charge.

Supplying and Lowering of IS marked Electric Resistance Welded Slotted M.S.pipe 100 mm dia nominal size housing,7.10 mm thick bevelled edge confirming to I.S. 4270-2001 with upto date amendement,if any,about 4 mtrs to 7 mtrs in length,welded without any cicumferential joints,into bore hole in vertical position including cost of all scaffolding derricks,poles,clamps embedded in foundation etc.includding 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.

Development of borewell as yield testing with air compressor through 90° V-notch and disinfections etc as per IS:2800-1979 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 suitable material with an average specific gravity of not less than 2.5,not containing more than 2% by weight of thin flat of elongated pieces,shall be of sub rounded to rounded grains with minimum angular features of size 2-3.35mm,shall be free from impurities such as shafe,shale,mica,feldspar,clay,snad,dirt loam, baematte and organic material as per IS 4097-1967 with upto date amendments,if any,arounf intake of tubewell with thickness of shroud around screen generally 100 mm to the entire depth of bore as per 2800 (Part-I) 1991 with up to date amendments,if any,within all leads and lifts,complete in all respects as per the directions of the Engineer-in-Charge.