SPECIAL REPAIR FOR REPLACEMENT OF OLD UNSERVICEABLE BOREWELL AT PUMP HOUSE NO. 01 WITH ALLIED WORK AT AYODHYA CANTT UNDER AGE (I) AYODHYA CANTT.

Amount

Trial bore of 250 mm dia upto 200meter depth below ground level in any kind of soil strata including hard stone/boulder etc complete all as specified and directed.

Reaming of the bore in successful bore down under Sl No 1.00 here in before for a total tube well size of 675 mm/525mm as specified below existing ground level by reverse/direct rotary method complete all as specified and directed by Engineer-in-Charge.

Upto 50 Mtr depth below ground level of reaming 675mm dia complete all as specified and directed by Engineer-in-Charge.

Exceeding 50 meters but not exceeding 200 meters depth of reaming 525mm dia complete all as specified and directed by Engineer-in-Charge.

Supplying and assembling including jointing lowering and fixing in position plain mild steel sheet ERW casing pipe 300 mm bore of thickness 08 mm conforming to IS 4270 -1995 Revised pipe jointed and welded with coupler rings welding shall be done through out circumference of the pipe and coupler rings both side complete all as specified and directed by Engineer-in-Charge. Make of Pipe : JINDAL/TATA/SAIL. [Note :- Length of pipe shall not be less than 6.0 m except where pipe length required is less than 6.0 meters.]

Description same all as per Ser No. 3.00 here in before but assembling, jointing plain mild steel sheet ERW casing pipe 200 mm bore of thickness 8mm conforming to IS 4270 -1995 Revised and lowering and fixing in true vertical position complete all as specified and directed by Engineer-in-Charge.

Supply & lowering, jointing, connecting & testing hot dip galvanised MS strainer pipe 200mm bore with 08 mm wall thickness jointed and welded with coupler ring ,welded shall be carried out through the complete circumfrance of pipe & couple ring both side complete all as specified and directed by Engineer-in-Charge. Make :- Jindall/TATA/Sail.

S&F mild steel reducing socket 300 mm x 200 mm including welding MS strip 40 x 6 mm (02 Nos) on each joint extended 75mm on each side complete all as specified and directed by Engineer-in-Charge. (The wall thickness of the socket side shall not be less than 10 mm)

S&F ERW MS bail plug 200 mm , 08 mm thickness, 1.0 M Long As per IS -4270 ,1995 revised complete all as specified and directed by Engineer-in-Charge.

S&F well cap for 300 mm size and 8 mm thick MS sheet threaded and similar to housing pipe complete all as specified and directed by Engineer-in-Charge.

S&F MS centering guide made out of 40 x 6 mm MS Flat Iron made to shape complete all as specified and directed by Engineer-in-Charge.

S&F MS flat iron 150mm x 16mm clamp & joist channel for holding 300 mm bore housing pipe and 150 mm column pipe complete all as specified and directed by Engineer-in-Charge.

M&L for packing pea gravel of size 2 to 4 mm of natural shape brought direct from river bed and packing around the assembly of borewell incluiding filling during development upto ground level complete all as specified and directed by Engineer-in-Charge.

Developing of the tube well by air compressor of capacity not less than 300 PSI complete all as specified and directed by Engineer-in-Charge.

Developement of borewel by means of over pumping unit capacity not less than 28000 GPH for required to achieve permises sand free water obtained from bore well complete all as specified and directed by Engineer-in-Charge.

Supply only strata sample box with glass cover 3 mm thick having internal dimension 1000mm x 600 mm x 100 mm made out of 20 mm thick seasoned shisham wood with hinges, hasp and staple including polishing complete dully compartmentlised for each strata sample obtained from every 03 mtr apart with samples taken at various depth met in boring kept in 200 gm PVC transparent container including strata chart on pressing cloth in duplicate complete all as specified and directed by Engineer-in-Charge.

Yield testing of tube well not less than 08 Hrs all as specified and directed to determine the safe pumping yield of tube well complete all as specified and directed by Engineer-in-Charge.

Electric logging in pilot bore to verify accurate acuifer including report in duplicate complete all as specified and directed by Engineer-in-Charge.

Supply and fix in repair CI sluce valve, flanged of class 1.6 PN ,150 mm (6”) dia including necessary nut bolts and gasket etc for fixing ccomplete all as specified and directed by Engineer-in-Charge.

Supply and fix in repair CI reflex valve, with by-pass Arrangement, 150 mm (6”) dia including necessary nut bolts and gasket etc for fixing ccomplete all as specified and directed by Engineer-in-Charge.

M&L for foundation of bore well by means of brick work concrete plastering etc as under:-

M&L for brick work around the bore well by half brick wall two Nos one at a radius of 200 mm from Housing Pipe and another at a radius of 450 mm from housing pipe hight of wall 600 mm below ground level and 300 mm above the ground level incluiding inside & outside randering with CM 1:4 15mm thick complete all as specified and directed by Engineer-in-Charge.

M&L for PCC 1:1.5:3 type B-1 with 20 mm graded stone agreegate filling in between two half brick work and 05 CM height for copping over top of brick / PCC work incluiding finishing and rendering etc complete all as specified and directed by Engineer-in-Charge.

Potability of water testing by competent authority as per IS 10500 for drinking water complete all as specified and directed by Engineer-in-Charge.

Cutting of ductile iron pipe in position for insertion of new tee collar branches etc dewatering due to residual water in pipes for 150 mm bore of pipe complete all as specified and directed by Engineer-in-Charge.

M&L for Ductile Iron both end flanged pipes class K-9 150 mm bore 'ISI marked' centrifugally cast class `B' on brick pillars laid in trenches or under floor/ road including gasket, bolts and nuts for fixing complete all as specified and directed by Engineer-in-Charge.

M&L for DI fittings for flanged/ Spigot socket pipes bends (any type,radius and angle) tapers any type (straight, bend, increasing, decreasing or double socket etc)Tee,pieces, single branch "Y" juction double ,cross (all sockets or socket and spigot) collar,caps,plugs,ventuary(for bleaching powder dozer connection),housing etc up to 150 mm bore complete all as specified and directed by Engineer-in-Charge. (Note - Excavation and earth work shall be measured and paid separately).

Construction of brick masonary valve pit chamber of size 1050 mm x 1050 mm x 1050 mm (internal dimension) including necessary excavation and earthwork in soft/ loose soil, foundation bed concrete 150 mm thick PCC 1:4:8 type D-2 using 40 mm graded crushed stone aggregate projected by 150mm all around from the outer face of brick wall including PCC 1:2:4 type B-1 (using 20mm graded crushed stone aggregate) in coping , brick work in one brick thick wall build in cement sand motar 1:4, 15mm thick rendering in cement sand mortar 1:4 on internal surface & top of valve pit upto 150 mm external surface, mild steel sheet cover 3 mm thick and mild steel sheet fitted in angle iron frame size 40mm x 40mm x 6mm around of valve pit, locking arrangement with pad lock of size 50 mm steel 6 leaver with double keys of make ; Godrej / Link or Harrision locks complete including two coats of synthetic enamel paint over one coat of red oxide primer on steel surface, complete including demolition of old valvepit as specified & directed.

S&F GI pipe light grade galvanised, with all fitting; laid in trenches of size 80 mm bore for protection of submersible cable complete all as specified and directed by Engineer-in-Charge.

M&L for flat three core submersible cable PVC insulated and sheathed multistranded copper conductor of cross sectional area 16 sqmm of make: Havells/ Polycab or other specified make including taking out of old cables by lifting of submersible pump with column pipes and lowering the same after replacing the cable complete all as specified and directed by Engineer-in-Charge.

Excavation in trenches n.exc. 1.5 mtr wide and n.exc. 1.5 mtr in depth for laying submersible cable in soft/loose soil, taking out excavated material,forming bottom etc complete all as specified and directed by Engineer-in-Charge.

Returning filling in including,spreading, levelling watering and well ramming in layer in n.exc 25 cm in soft/lose soil etc complete all as specified and directed by Engineer-in-Charge.

Removing excavated material n.exc 50 mtr and depositing where directed at a level n.exc 1.5 mtr above starting point as in soft/loose soil etc complete all as specified and directed by Engineer-in-Charge.

M&L for supporting structure for pulley above the borewell with two Nos RCC Pillar (0.5x0.5x6m) 4.5m above ground and 1.5m below ground with 20 mm # TMT bar mesh as required incl necessary formwork with 1:2:4 type B1 20mm graded stone with 180x100 ISMB 4.5m in length and PCC 1:1.5:3 type B-1 with 20 mm graded stone agreegate PCC bed around borewell covering both the pillar and fixing angle iron for staircase on one of the pillar 1 feet apart from ground level upto the top for lowering and lifting of submersible pumps complete all as specified and directed by Engineer-in-Charge.

Supply and fixing Manual Chain Pully Block with guide capacity 2 ton 4.5 mtr lift suitable for submersible pump set of 25-45 HP complete all as specified and directed by Engineer-in-Charge.

Supply and fixing in repairs Lifting Chain suitable for submersible pump set of 25-45 HP complete all as specified and directed by Engineer-in-Charge.

Lifting, lowering, connecting, commissioning testing of submersible set any make and capacity 25 HP to 45 HP 3 phase 415V from bore well 300/200mm at PH No 01 with connected items such as column pipe approx 40 RM, properly connecting submersible cable etc fixed in repairs complete all as specified and directed by Engineer-in-Charge. [Note:- (i) All type of T & P, chain pulley & tripod etc required at site will be arranged by the contractor and rates for the same deemed to be included in the quoted rate]

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