WBPHED/EE/MD/NIeT_42 of 2025-2026, Sl. No. 01

Site Preparation, Temporary Latrine, Placement & levelling of Rig Machine, Mast hoisting and Casing drilling ( Upto 6 mtr.) Placement of Casing with all allied works necessary to commence drilling woks and wind up of all machineries after completion of Drilling.

Drilling by Direct Rotary method of drilling using 9 7/8” dia.bit for pilot bore follwed by subsequently reaming using 12 1/4” dia. ,15 " dia. and 17.5" dia. Rock Roller Bits/Drag Bits in consolidated, semi consolidated and soft formation up to required depth including casing boring and casing lowering as required including cost of fuels and lubricants etc. as required for drilling.

Note:1) Rate only for pilot drilling will be @ 50%. of item rate. 2) Rate for reaming by 12 1/4 " dia. bit will be @ 14% of item rate. 3) Rate for reaming by 15 " dia. bit will be @ 16% of item rate. 4) Rate for reaming by 17.5 " dia. bit will be @ 20% of item rate.

(A) Rate only for pilot drilling will be @ 50%. of item rate.

( a ) From 6 Mtr. to 60 Mtr.

( b ) From 60 Mtr. to 90 Mtr.

( c ) From 90 Mtr. to 120 Mtr.

( d ) From 120 Mtr. to 150 Mtr.

( e ) From 150 Mtr. to 180 Mtr.

(B) Rate for reaming by 12 1/4 " dia. bit will be @ 14% of item rate.

( a ) From 6 Mtr. to 60 Mtr.

( b ) From 60 Mtr. to 90 Mtr.

( c ) From 90 Mtr. to 120 Mtr.

( d ) From 120 Mtr. to 150 Mtr.

( e ) From 150 Mtr. to 180 Mtr.

( C) Rate for reaming by 15 " dia. bit will be @ 16% of item rate.

( a ) From 6 Mtr. to 60 Mtr.

( b ) From 60 Mtr. to 90 Mtr.

( c ) From 90 Mtr. to 120 Mtr.

( d ) From 120 Mtr. to 150 Mtr.

( e ) From 150 Mtr. to 180 Mtr.

( D) Rate for reaming by 17.5 " dia. bit will be @ 20% of item rate.

( a ) From 6 Mtr. to 60 Mtr.

Supplying and delivery of the following accessories

a) i)UPVC Cap 250 mm. Dia.

ii) UPVC Cap 200 mm. Dia.

b) UPVC Reducer 250mmx 200 mm dia.

c) Supply and delivery of M.S. Housing clamp 250 mm dia.

d) Supply and delivery of M.S .Centre guide (Special Type).

Lowering the tube well assembly (UPVC Casing pipe ,well pipe, strainer along with UPVC accessories) vertically in a position with proper lowering arrangement by applying necessary jointing compound including labour cost for subsequent gravel packing and machine operation cost etc.

Cost of Consumables for drilling rigs and machineries

Supply and delivery of Washed gravels size ranging from 1.80 mm to 4.74 mm. conforming to IS 4097 : 1967.

Packing the side of the tube well housing pipe with puddle clay & with good quality local earth as per direction.

Supply and delivery of Bentonite Powder conforming to IS 6186:1986

Development (Min. 8 Hr. continuous) of tube well by using suitable air compressor (Min. Capacity: 600CFM & operating Pressure 14 Bar) followed by yield testing with BHT pump (Head :45 to 50mtr.,Discharge :1100 to 1000 LPM and 25 BHP engine) all complete including To & Fro Transportation cost and Cost of fuels, lubricants & Labour etc.

Water sample collection and chemical test including Arsenic Test.

Electro-logging charge.

Supply and delivery of UPVC pipe (CD) conforming to IS 12818:2010. (CIPET Certified)

a) 250 mm dia

b) 200 mm dia

Supply and delivery of UPVC Deep Well Screen (RDS) Pipes with Ribs conforming to IS 12818:2010. (CIPET Certified)

a) 200 mm dia.

Transportation cost of drilling equipment and accessories rig machine etc. including cost of fuel lubricant & loading unloading the materials from store/stack yard/ suppliers godown and unloading/stacking the same at site. (Up to 60 Km distance)

Earthwork in excavation in foundation trenches or drain in all sorts of soil (including mixed soil but excluding laterite or sandstone) including removing, spreading & stacking the spoil within a lead of 75m as directed. The item includes necessary trimming the sides of trenches. Levelling, dressing and ramming the bottom, bailing out of water as required complete. (a) Depth of excavation not exceeding 1500 mm.

Earth work in filling in foundation trenches or plinth with good earth. in layers not exceeding 150 mm. including watering and ramming etc. layer by layer complete. (payment to be made on the basis of mesurement of finished quantity of work) : (a) With earth obtained from excavation of fundation

Earth work in filling in compound, tank, low land,ditches etc. with good earth, in layers not exceeding 150 mm. including breaking clods and consolidating the same by ramming and dressing complete. (Payment will be made on profile measurement before and after the work)

a) With carried earth arranged by the contractor within a radius of 3 km. Including cost of carried earth.

Filling in foundation or plinth by fine sand in layers not exceeding 150mm as directed and consolidating same by thorough saturation with water ramming complete. Including the cost of supply of sand.( Payment to be made on measurment of finished quantity ).

Single brick flat soling of picked jhama bricks including ramming and dressing bed to proper level and filling joints with powdered earth or local sand.

Hire charges for shuttring with centering and necessary staging upto 4 m. using approved stout props and thick hard wood planks of approved thickness with required bracing for concrete slabs, beam, columns, lintles curved or straight including fitting, fixing and striking out after completion of works.(In all floors). 25mm to 30mm thick wooden shuttering as per decision and direction of Engineer-In-Charge.

Cement concrete with graded stone ballast (40 mm size excluding shuttering) In ground floor (A) [Pakur Variety]. (a) 1:3:6 proportion

Ordinary cement concrete ( mix 1:1.5:3 ) with graded stone chips ( nominal 20 mm size) excluding shuttering and reinforcement. If any, : Pakur Variety. (Rate Analysis)

Reinforcement for reinforced work in all sorts of structures including distribution bars, stirrups, binders etc intial straightening and removal of loose rust (if necessary), cutting to requisite length, hooking and bending to correct shape, placing in proper position and binding with 16 gauge black annealed wire at every inersection, complete as per drawing and direction.(Rate Analysis).(i) JSW/JSPL/SHYAM/SRMB/BMASL/ELECROSTEEL/SSL (a) For works in foundation, basement and upto roof of ground floor/upto 4 m. (i) Tor steel/Mild Steeel.: For works in foundation, basement and upto roof of ground floor upto 4mtr.

Brickwork with 1st class brick in Cement mortar 1:6. In foundation and plinth.

125 mm thick brickwork with 1st class bricks in cement mortar (4:1) : In ground floor

Plaster to wall, floor etc with sand and cement morter (1:6) including rounding off or champhering corners as directed and racking out joints or roughing of concrete surface including throating, nosing and drip course where necessary (In all floors). b) With 6:1 cement morter. (i) 20 mm thick plaster in Ground Floor.

Neat cement punning in wall /dado, window sills, floor drains etc. in all floors about 1.5mm thick.

Applying Exterior grade Acrylic primer of approved quality and brand on plastered or cencrete surface old or new surface to receive decorative textured(matt finish) or smooth finish acrylic exterior emulsion paint including scraping and preparing the surface throughly, complete as per manufacturer's specification and as per direction of the EIC. In Ground Floor: a) One Coat.

Protective and Decorative Acrylic exterior emulsion paint of approved quality, as per manufacturer's specification and as per direction of EIC to be applied over acrylic primer as required. The rate includes cost of material, labour, scaffolding and all incidental charges but excluding the cost of primer. In Ground floor (Two Coat) a) Normal Acrylic Emulsion

M.S.or W.I. Ornamental grill of approved design joints continuously welded with M.S, W.I. Flats and bars of windows, railing etc. fitted and fixed with necessary screws and lugs in ground floor: Grill weighing above 16 Kg./sq.mtr and above.

Extra for work in grill gate: For hanging and locking arrangements including supply of materials and labour complete.

Priming one coat on steel or other metal surface with synthetic oil bound primer of approved quality including smoothening surfaces by sand papering etc.

Painting with best quality synthetic enamel paint of approved make and brand including smoothening surface by sand papering etc. including using of approved putty etc. on the surface, if necessary : With super gloss (hi-gloss): on steel or other metal surface. With super gloss (hi-gloss) :Two coats ( with any shade except white).

Add Includng GST @18%

Add Includng CESS @1%