NIT 22 Rate Contract of Drilling of 125mm Nominal diameter bore hole for Hand Pumps and installation of India Mark II Hand Pump in Combination Strata complete with material and labour charges in Div. Kaman of District Deeg (Urban Rural)

Construction of tube well from ground level & up to 100 mtr depth to accommodate housing and assembly pipe of following sizes in all type of alluvium strata unconsolidated formation such as pebbles, boulders etc. by percussion/rotary drilling method as per IS:2800 Part 1: 1991 and IS:2800 Part II: 1979 (both amended upto date) and technical specifications, with gravel as per IS:4097-1967 and it's packing as per IS: 2800 (Part I & II) 1979 as amended up to date (the work includes the cost of gravel & it's primary packing and packing during development, lowering of housing & strainer assembly pipes with supply and wrapping of coir-rope, wherever necessary for arresting fine sand particles and development work, but excluding the cost of housing and strainer pipe assembly). The work would be completed after obtaining sand free water.

Nominal bore 125 mm dia.

Add 15% extra on above item for drilling depth beyond 100mtr, If depth of bore is more than 100 mtr.

Construction of Tube Well up to 100 mtr. depth in all type of rocks by DTH system & over burden to accommodate casing pipe of following sizes in all types of soils & over burden including lowering of casing pipes, (if required) excluding cost of casing pipes, as per IS:2800 Part 1: 1991 and IS:2800 Part II: 1979 (both amended upto date) and technical specifications. The work would be completed after obtaining sand free water. The tube well should have a throughout bore as per nominal dia of casing pipe.

Nominal bore 125 mm dia.

Add 15% extra on above item for drilling depth beyond 100mtr, If depth of bore is more than 100 mtr.

Construction of tube well from ground level and up to 100 mtr. depth and above of following sizes in all types of soils in alluvium strata, unconsolidated formation such as pebbles, boulders etc. by bailing method and without gravel packing as per IS:2800 Part 1: 1991 and IS:2800 Part II: 1979 (both amended up to date) and technical specifications. The work includes formation of cavity at bottom by development with appropriate air compressor or bailer pumping and also lowering of casing pipe but excluding cost of the casing pipe. The tube well should have a throughout bore as per nominal dia of casing pipe. The work would be completed after obtaining sand free water.

Nominal bore 125 mm dia.

Construction of tube well from ground level and up to 100 mtr depth and above to accommodate housing assembly pipe in all type of unconsolidated formation such as pebbles, boulders, collapsible formation etc. by Odex drilling method as per IS: IS:2800 Part 1: 1991 and IS:2800 Part II: 1979 (both amended up to date) and technical specifications. The work will include lowering of housing and strainer pipe assembly and casing shoe including cost of casing shoe, but excluding cost of the casing pipe. The work would be completed after obtaining sand free water.

Nominal bore 125 mm dia.

Add 15% extra on above item for drilling depth beyond 100mtr, If depth of bore is more than 100 mtr.

Supply of ERW M.S. black casing pipe ISI marked {IS:1239(Part-1:2004)} medium of following sizes at site of work.

125 mm dia NB( Thickness of pipe 4.8 mm & mass of tube 16.40 Kg/m)

Labour charges for making slots on blank pipes made of ERW MS black pipe ISI marked of following sizes, the slotting should be as per IS:8110-1985.

125 mm dia nominal bore

Supply & installation of GI pipe 32 mm medium class “B” with pipe sockets (heavy duty).

Supply and installation of ISI marked India Mark II Hand pump set complete with cylinder & 15 connecting rods.

Supply and installation of ISI Marked Extra Deep Well Hand Pump (EDWP) as per IS 15500: 2004 or as amended up to date complete with cylinder and connecting rods.

EDWHP + 20 Connecting rod.

EDWHP + 23 Connecting rod + 1 Weight.

EDWHP + 26 Connecting rod + 2 Weight.

EDWHP + 30 Connecting rod + 3 Weight.

Supply and installation of ISI mark connecting rod as per departmental specifications of 3 meter length.

Construction of 185 cm. dia platform as per approved design & drawing of UNICEF

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