RESTORATION OF BOREWELL AT PUMP HOUSE NO 3 AT COOCH BEHAR MIL STN UNDER GE (SOUTH) BINNAGURI

Amount

S&F of MS reducer socket of size 250mm x 200mm ERW pipe to be fabricated out of 12 mm sheet plate with the housing pipe 10” of approved quality for fixing 10” dia MS pipe with 8” MS pipe, complete all as specified and directed by Engineer-in -charge.

S&F of MS threaded well cap with locking arrangement of approved quality for 250 mm dia MS pipe, complete all as specified and directed by Engineer-in -charge.

M&L for bail plug of approved quality for 200mm dia MS bore pipe, complete all as specified and directed by Engineer-in -charge.

S&F of MS centre guide of approved quality for 250mm dia MS bore pipe, complete all as specified and directed by Engineer-in -charge.

S&F of MS iron clamp for 250mm dia MS bore pipe, complete all as specified and directed by Engineer-in -charge.

M&L for drilling of trial bore of 250 mm dia upto130 mtr depth below ground level in any kind of soil strata incl hard stone/ boulder by deploying reverse rotary process etc. including cost of consumable stores like fuel lubricants, bentonite mud, material and transportation of rigs machinery etc. and supply of strata chart and all other desired information etc., complete all as specified and directed by Engineer-in -charge. Note:- Erection and dismantling of boring plant including all arrangement for the transportation of the boring equipment to site of work from the store of contractor at site and back are to be made by the contractor at his own cost. All rates should be quoted for supplying the material at site of work. Pits for collection of water and water for drilling tube well be arranged by the firm / contractor at site his own cost.

M&L for development of trial bore by reaming up to 525 mm dia from ground level up to and including a depth of 60 mtrs in step from ground level (For one bore well), complete all as specified and directed by Engineer-in -charge. Note :- Development of trial bore should be done by reaming in following step:- (a) From 250mm to 350 mm (b) From 350mm to 450 mm (c) From 450mm to 550 mm

M&L for development of trial bore by reaming up to 450mm dia from depth exceeding 60 mtrs and up to 110 mtr depth complete all as specified and directed. (For one bore well), complete all as specified and directed by Engineer-in -charge. Note :- Development of trial bore should be done by reaming in following step:- (a) From 250mm to 350 mm (b) From 350mm to 450 mm

M&L for electric logging in pilot bore for precise delineation of granular zones as also the quality of ground water including report interpretation, complete all as specified and directed by Engineer-in -charge. Note:-Electric logging shall be carried out by any approved reputed agency.

Supply, fixing & lowering in bore well 250mm bore ERW/ MS casing pipe electric resistant welded pipe with sockets (housing pipe) confirming to IS:3589 (with up to date amendments) duly ISI marked and approved by Engineer-in-Charge. The housing pipe shall be of suitable length as per the site requirements manufactured out of 8.00 mm thick MS plate including the cost of required number of sockets of size 177.80 mm width made out of 1/2 “(12mm thick) plate including painting with two coats of anti corrosive bit mastic paint of approved brand etc., complete all as specified and directed by Engineer-in -charge.

Supply, fixing & lowering in bore well 200mm bore ERW/ MS casing pipe electric resistant welded pipe with sockets (housing pipe) confirming to IS:3589 (with up to date amendments) duly ISI marked and approved by GE. The blind pipe shall be of standard length as per the site requirements with 76.02 mm of threaded end(8 threads to an inch or 25.4 mm) manufactured out of 8.00 mm thick MS plate including the cost of required number of sockets of size 152.4 mm width made out of 1/2 “ (12mm thick) plate including painting with two coats of anti corrosive bit mastic paint of approved brand etc., complete all as specified and directed by Engineer-in -charge.

M&L for plain Low carbon galvanised slotted pipe of 200 mm dia the slots shall be cut by milling or by slitting saw confirming to IS: 8110 (2000).The housing pipe shall be of suitable length as per the site requirements with threaded ends (8 threads to an inch or 25.4 mm) pipe shall be manufactured out of 8.00 mm thick MS plate including the cost of required number of sockets of size 177.80 mm width made out of 1/2 “ (12mm thick) plate including painting with two coats of anti corrosive bit mastic paint, complete all as specified and directed by Engineer-in -charge.

Supply & filling of pea gravel up to 4mm size around the casing pipe of bore well including all leads and lifts should pea gravel free from dust, dirt or vegetable manure, complete all as specified and directed by Engineer-in -charge.

Development & yield test of tube well with compressed air and after with 25% extra capacity pump by pumping muddy water of bore well using air compressor of 350 psi, 600 cfm pressure for required number of hrs including fuel etc. complete all as specified and directed.

Testing of water sample of new boring for bacteriological and chemical testing as per IS :-10500 (2012) (systematic analysis) from government approved laboratory including submitting the report to the department, complete all as specified and directed by Engineer-in -charge.

S&F of cast iron sluice valve for 100 bore pipe heavy duty (PN-1.6) conforming to IS -14846 with brass spindle and iron wheel head flanged both ends and including all jointing materials required viz rubber gasket 3mm thick, bots, nuts and washers including dismantling old unserviceable one complete all as per specified and as directed by Engineer-in-charge.

S&F of Reflux Valve( NRV) of size 100mm bore Dia, heavy duty confirming to IS:-5312-1 (2004) including jointing materials nut bolt, washer, gasket, complete all as specified and directed by Engineer-in -charge.

Supply and laying of pipe ductile Iron ,Flanged type including specials (bend, socket, reducer ,rubber gaskit, washer, nut/bolts etc) all as per IS:-8329 (2000) class K-7 of 100 mm dia and laying of pipe as per IS:-12288(1987), complete all as specified and directed by Engineer-in -charge.

M&L for RCC M25 (Design mix) as in Columns, pillars, piers, posts and struts complete all as specified and as directed by Engineer-in-charge.

M&L for RCC M25 (Design mix) as in foundations, including rafts, footings, foundation beams, plinth beams, bases for columns, etc. basement slabs, under-reamed piles and mass concrete complete all as specified and as directed by Engineer-in-charge.

M&L for Mild steel TMT bars 10 mm dia. and over cut to length, bent to shape required, including cranking, bending spirally for hooping for columns, hooking ends and binding with mild steel wire (annealed) not less than 0.9 mm dia., or securing with clips, complete all as per specified and as directed by Engineer-in-charge.

M&L for Mild steel TMT bars 6 to 8 mm dia. cut to length, bent to shape required, including cranking, bending spirally for hooping for columns, hooking ends and binding with mild steel wire (annealed) not less than 0.9 mm dia., or securing with clips, complete all as per specified and as directed by Engineer-in-charge.

S&F Mild steel flats etc., as in supports for stiffening of fencing, wall ties, hold fasts, wind ties, clamps and similar small articles etc. conforming to Fe-290 Gde E-165, complete all as per specified and as directed by Engineer-in-charge.

M&L for rendering 10 mm thick on fair faces of brick work or concrete surfaces in CM 1:3, surface even & fair, complete all as specified and as directed by Engineer-in-charge.

M&L for preparation of new or previously untreated steel or iron surface of any description and applying two coats of synthetic enamel paint over a coat of red oxide primer over 10cm width or girth complete all as specified and as directed by Engineer-in-charge.

M&L for masonry valve chamber of size 900x900x900 mm (Internal dimensions) and 100 mm thick PCC 1:4:8 type D2 foundation, brick work in cement mortar 1:6, plastering internal and external surface 15mm thick in cement mortar 1:4, PCC 1:3:6 type C1 (using 20mm graded stone aggregate) coping, 50x50x6mm mild steel angle iron, 5 mm thick mild steel plate cover complete with locking arrangement painting steel and iron surfaces with synthetic enamel paint two coats over a coat of zinc chrome primer and necessary excavation and earth work including dismantling of existing one complete all as per specified and as directed by Engineer-in-charge.

Excavation in trenches n exc 1.5m wide and n. exc 1.5 m in depth for foundation etc or for shafts, wells, cesspits, manholes, pier holes etc n. exc 10 sqm on plan and n exc 1.5m in depth and getting out in soft/loose soil complete all as per specified and as directed by Engineer-in-charge.

Returning, filling in, including spreading, levelling, watering and well ramming in layers n exc 25cm complete all as per specified and as directed by Engineer-in-charge.

Removing excavated material not exc. 50 m & depositing where directed at a level not exc. 1.5 m above starting point complete all as per specified and as directed by Engineer-in-charge.

S&F of CI pipe fitting such as bend, reducer , socket, Tee etc of various size complete all as per specified and as directed by Engineer-in-charge. Note:- The contract sum shall be calculated by deducting the amount shown in Credit Schedule attached to this tender, from total amount of Schedule 'A'/BOQ.

BHANU GAJMER

flexpro construction company

R K AGARWAL

RABI BANIK