PROVISION OF NEW BOREWELL AT SERA AND VVRA

Carrying out ground survey to locate and identify suitable site (point) for portable and good yield water by any government approved departments complete all as directed.

Trial bore of Not less than 150mm but upto 200meter as per site requirement depth below ground level in any kind of soil strata including hard stone/boulder for (02 Nos Borewell) as per direction by Engineer-in-charge.

Material and labour Boring with drill / reverse rotary rig circulation method including electric logging through any kind of strata of soil / rocks for drilling not less than 150 mm to 250mm dia hole for depth not exceeding 60 metre deep below ground level by keeping sufficient space for packing pea gravel including disposal of surplus soil / liquid mud / sand etc within 100 metre complete all as specified & directed.for (02 Nos Borewell) as per direction by Engineer-in-charge.

All as per Srl Item No. 3 above but depth exceeding 60 metre and not exceeding 100 metre below ground level complete all as specified and directed.for (02 Nos Borewell) Each borewell 40 RM

Supply, assembling, lowering and fixing into bore hole Not less than 200 mm to 250 mm bore MS housing/casing pipe heavy duty with wall thickness 8 mm, screwed and socketed, ISI marked (IS:4270) ERW in random length up to 6 metres, including necessary fittings (such as special steel socket,coupling etc) duly painted with 2 coats of bituminous paint on external surfaces of pipe complete all as specified and directed. for (02 Nos Borewell) as per direction by Engineer-in-charge.

All as per Srl Item No. 5 above but not less than 150mm to 200mm bore blind casing pipes. for (02 Nos Borewell) as per direction by Engineer-in-charge.

Supply, assembling, jointing & lowering into bore hole 150mm to 200mm bore slotted strainer vertical mild steel pipe ERW not less than 8mm thick screwed and socketed each lenght not exceeding 6 mtr (measured net as fixed) including screwed & socketed complete all as specified and directed. for (02 Nos Borewell) as per direction by Engineer-in-charge.

Supply and fix 8 mm thick bail plug of mild steel, for 200mm (08'') bore, 60cm long with strong iron hook,screwed and welded in casing pipe complete all as specified and directed Note : Length of pipe required to be fixed with bail plug shall be measured and paid for seperately

Supplying, fixing and lowering in to bore hole casing / strainer pipe, centering guides made out of MS flat iron of size 50x6mm, made to shape with two rings as per site requirement apart and three No ribs duly welded, suitable for 200/150mm bore MS casing pipe complete all as specified & directed.

Supply and fix MS reducer of size 200mm x 150 mm, wall thickness 8mm and length not less than 600mm, screwed at both ends including necessary fittings,fixing support and jointing at appropriate length complete all as specified, directed

Supplying and fixing MS housing clamp made out of mild steel flat iron 150mm wide, 12mm thick, 70 cm long, suitable for 200mm dia casing pipe with necessary 19mm dia MS bolts full threaded, nuts and washers complete all as specified and directed.

Supplying and fixing cross made of mild steel flat iron 100mm wide, 10mm thick, size 350mm x 350mm and lowering upto reducer level of bore assembly complete all as specified and directed.

Supplying and fixing MS locking cap 8mm thick, 200 mm dia having internal threads with welded iron handle 20 mm dia MS round bar, made to shape complete all as specified and directed.

Material and labour for packing pea gravel of size 1.6 mm to 4.00mm, all around the casing, blind and stainer pipe pipe in the bore well to entire depth complete all as specified.

Material and labour for development of bore well with high capacity air compresser of suiatble sizefor running duration not less than 24 hours till the water becomes sand and silt free including removal of liquid mud, sand, silt etc up to a disatnce of 50 metre and deposited where directed, complete all as specified & directed.

Material and labour for yield testing and stabilizing of bore well by means of over pumping and measuring the yeild by submersible pumping set of suitable capacity and suitable head not less than 24 hours (excluding time period of development of bore well) complete all as specified & directed.

Material and labour for strata sample box of suitable size, made out of second class hard wood with openable shutter of transparent glass, having not less than 20 compartments capable of holding 400 to 500 gms of strata sample in transparent plastic containers duly marked with strata depth, including painting with two coats of synthetic enamel paint over a coat of primer complete all as specified and directed.

Supply lower testing and commissioning of submersible pump set , vertical type, multistage with brass impellers duly coupled to submersible electric driven induction motor , 3ph, 415 V, with 60 LPM, 200 mtrs head, apprx 10 HP 12 stages includingt provision of NRV both ends screwed of size 80 mm dia fixed to GI pipe 80 mm dia complete all as specified and directed.

M&L of lowering GI pipe heavy duty class of size 80mm diabore with long GI socket in 3 meter length complete all as specified and directed.

S & F gun metal non returnvalve of size 80mm dia both ended side served for iron pipe all as directed by E-in-Charge.

M&L for submersible flat cable stranded copper conductor PVC insulated PVC sheathed 03 Core flat size 06 Sqmm rating 440 V (rated for 1100 V)

M&L Earthing complete with galvanised steel earth plate electrode 600x600x6mm thick, buried directly and preferably vertically in ground ( earth pit not less than 2.25 mtr deep below ground level ) with top edge of the plate not less than 1.5 mtr below normal ground level, connected to galvanised iron strip of 25x4mm (upto 7.5 M in length from earth plate) by means of bolts, nuts, check nuts and washers of galvanised iron or steel all as shown in electrical plate No 5, connected to earthing test point all as specified including earth work and excavation in any type of soil, PCC 1:3:6 type C1 chamber and RCC 1:2:4 type B1 cover 40 mm thick, with 8 mm dia steel deformed (TMT bars) reinforcement at 150mm c/c both ways, 40 mm dia GI light grade pipe for earth lead protection, 20 mm dia GI light grade pipe for watering , water funnel, testing point etc., complete all as specified and testing on completion.

M&L pipe galvanised "Medium class" supplied and laid complete including all fittings 50mm dia.

M&L for Globe valve conforming to IS 9338, with butterfly handle, Valve Brass size 50 mm dia

S&F Joist, channel, angle or tee section fixed independently without connecting plates etc (cut to ordinary length i.e. with in 20 mm of the length indicated) of grade Fe-410-W and ISMB 250 complete all as directed

Supply installation testing and commissioning of chlorination chemical dosing system comprised of pressure pump & thermoplastic cylinder shape receptacle with cover of 100 ltrs capacity for power free automatic water sanitiser /conditioning treatment station with proportional dosing arrangement with following attachments:- (a)Water inlet regulator (b) Overflow vent (c) Water outlet regulator(for standalone gravity flow and offline automated gravity flow) (d) Drain valve (e) Fluid level controller (f)sludge level gauge (g) Station base assembly with station base buffer & multi cavity arrangement (h) Station holding assembly (j) Refill cavity lids (k) Inbuilt level switch and processor (l) Flexible connecting duct Make:-Declibac(model ADS-PRO)/Equivalent/OEM recommended make. Note:- Any addition/alteration required in the existing pipe line or any fittings/fixtures required for connectionof the above item are deemed to be included in this rate.

Constructing masonry Chamber 60x60x75 cm inside, in brick work in cement mortar 1:4 (1 cement : 4 coarse sand) for sluice valve/gate valve, with C.I. surface box 100mm top diameter, 160 mm bottom diameter and 180 mm deep ( inside) with chained lid and RCC top slab 1:2:4 mix (1 cement : 2 coarse sand : 4 graded stone aggregate 20mm nominal size ) , i/c necessary excavation, foundation concrete 1:5:10 (1 cement : 5 fine sand : 10 graded stone aggregate 40 mm nominal size) and inside plastering with cement mortar 1:3 (1 cement : 3 coarse sand) 12 mm thick, finished with a floating coat of neat cement complete as per standard design With common burnt clay F.P.S.(non modular) bricks of class designation 7.5

Supply, installation testing and commissioning of pedestel type LT cubical panel outdoor type made out of 3.15mm thick CRCA sheet with aluminium bus bar of 100Amps 4 Nos as per IS 8623 with single panel dust / vermin proof front operated double shuttered with locking arrangements complete alongwith fixing materials such as bolts, nuts and grouting in the cement concrete painting with two coats of synthetic enamel paint over a coat of redoxide primer inside/outside complete including following accessories:-

M&L for carried out chemical analysis and becterial analysis of the bore well water and give the report from approved laburatory complete all as directed

Supply of chlorine tablets contained in plastic cylinder disposable sanitiser refill(dia 2.5 inches + 0.5inches height 10 inches+ 0.5 inches) for disinfection of drinking water with arrangement for controlled release of disinfectant in water suitable for operation through dosing system. Make:-Declibac (Type stequa 411 AE/Eqvt)/OEM recommended make. Note:-The product media should have heavy metal contaminants below declibac limits and must pass the acutetoxicity test(confirm to non toxicityfor mammalian cells) and safe for human health safety point complete.

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