SPECIAL REPAIRS AND REPLACEMENT OF BOREWELL AT PH 14 AT BINNAGURI MIL STN

Amount

Schedule 'A'

S&F 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 as directed.

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

M&L for bail plug of approved quality for 200mm dia MS bore pipe complete all as specified and directed.

S&F MS centre guide of approved quality for 250mm dia MS bore pipe complete all as specified and directed.

S & F MS iron clamp for 250mm dia MS bore pipe complete all as specified and directed.

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 rottary process etc. including cost of consumable stores like fuel lubricants, betonies 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. 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 upto and including a depth of 60 mtrs in step from ground level complete all as specified and directed. (For one bore well). 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). 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 as directed. Note:-Electric logging shall be carried out by any approved reputed agency.

Supply, fixing & lowering in bore well 250mm boe ERW/ MS casing pipe electric resistant welded pipe with sockets (housing pipe) confirming to IS:3589 (with upto 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.

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 upto 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.

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 of approved brand etc. complete all as specified and directed.

Supply & filling pea gravel upto 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.

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.

Dismantling of old submersible pump with column pipe Lifting from the existing unsv borewell make it servicing/overhauling the pump and motor changing nut & bolt/gaskit to the column pipe lowering of same in the newly developed borewell with suitable clamping arrangements complete all as specified and directed. Note:- Any variation in lifting/lowering of pump, cost shall be included in the rate quoted by the Contractor.

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 & directed.

Supply and fix CI sluice valve Cast iron,150 mm dia PN-1.6 flanged end conforming to IS -14846 with CI wheel, brass spindle, chuck nuts, rubber gasket, bolts (full threaded), nuts & washers including joints for the following sizes complete all as specified and directed including dismantling and taking down of old unserviceable CI Sluice valve from existing position complete all as specified and as directed.

Supply and fix Reflux Valve( NRV) of size 150mm bore dia,heavy duty confirming to IS:-5312-1 (2004) including jointing materials nut bolt, washer, gaskit complete all as specified and as directed.

Supply and laying pipe ductile Iron ,Fianged type including specials (bend,socket,reducer ,rubber gaskit,washer,nut/bolts etc) all as per IS:-8329 (2000) class K-7 of 150 mm dia and laying of pipe as per IS:-12288(1987) complete all as specified and as directed.

M&L RCC M-25 (Design mix)using 20 mm grade stone aggregate as in column complete all as specified and as directed.

M&L RCC M-25 (Design mix)using 20 mm grade stone aggregate as in column footing complete all as specified and as directed.

M&L for TMT bars 10 mm dia and over cut to length and bent to shape required including cranking hooking ends and binding with and MS wire not less than 0.9 mm dia or securing with clips complete all as specified and as directed.

All as per item No - 22.00 here in before but 6mm to 8mm dia.

S & F rolled mild steel ISMB 150, Fe 290 Gde E-165 fixed independently all as specified and directed including hexagonal MS machine threaded nut bolt washers complete all as specified and as directed by Engr In Charge.

M&L for rendering 10 mm thick in cement morter (1:3) on concrete surfaces complete all as specified and as directed.

M&L for painting to the steel sections over 10 cm width or girth in two coats of synthetic enamel paint over one coat of red oxide primer complete all as specified and as directed.

PABITRA CONSTRUCTION