GE863/EWS-T-52 OF 2022-23

Amount

Boring/ Drilling/trail pilot bore' of suitable dia of 200mm bore , by suitable method (by ODEX or DTH-cum-rotary or reverse rig method or hammer method or telescopic method) to any depth (not exceeding 200m) below groung level in any type of strata/ soil/ rock with sand including disposal of materials obtained (soil, rock etc.) from boring to a distance not exceeding 50m with and including deploying required rig, machinary, T&P, equipments etc with and including collection of logical samples (drilling/cutting) and to maintain drilling time logbook complete all as specified and directed. Note :- 1. Neccessary fuel, lubricant and chemicals extra required for construction work shall be arranged by contractor and cost of these items shall be deemed to be included in quoted rates. 2. Depending upon availability of water bearing strata, drilling beyond 100 m below ground level be carried out with prior written approval of GE. 3. Items except sr no 1 to be executed only after succesful execution of this item of work / successful boring depending upon availability of water. No any claim of contractor on this account shall be entertained.

Development of pilot / trial bore by reaming vertical bore upto 550 mm in steps by heavy duty direct rotary rig machine at approved site location in any type of strata for 200mm bore ERW casing pipe for following depth as mentioned below including all connected works complete all as specified and directed :-

Upto a depth of 40 metre from ground level.

From depth exceeding 40 metre depth as required at site and as directed by Engineer-inCharge. Note :- The cost of hiring and transportation of suitable truck mounted rig machine and other required equipments deemed to be included in quoted rate.

Supplying, assembling and lowering in position in the bore hole inner assembly of MS housing blind pipes ERW grade, threaded and socket jointed, 175 mm nominal bore and 5 mm wall thickness or bevelled end confirming to IS 4270 complete all as specified and directed

Supplying, assembling and lowering in position in the bore hole inner assembly of MS housing slotted pipes ERW grade, threaded and socket jointed, 175 mm nominal bore and 5 mm wall thickness or bevelled end confirming to IS 4270 complete all as specified and directed. Note :- The length as mentioned under item No. 3 & 4 may vary as per availability of water.

S&F Housing clamps in position MS holding down clamps (Set of two nos.) made out of 40 mm X5 mm flat iron and length upto 0.75 metre , bent to shape as suitable to holding 65mm coloumn pipe, complete with 4 Nos. nut, bolt & washers, complete all as speicifed and directed.

Supplying sample box of strata sample made out of teak wood planks 25mm thick, size of board 1000mm X 1000mm, size of sample bins 100mm X 100mm with front provided with glazed hinged shutters, hasp and staples for strata samples as found while drilling tube well and fixed in position, complete, all as specified and directed.

M&L for packing with pea gravels of size 3 to 8 mm natural shape brought direct from river bank packing around casing pipe to entire depth upto ground level complete all as specified and directed.

Developing the tube / bore well firstly by means of pumping unit using air compressor unit of adequate capacity not less than 250 PSI and then by over pumping untill sand free water is obtained & testing the yield for duration as under :-

With air compressor (first 24 hours).

With air compressor (24 hours to 48 hours).

Over pumping with the help of suitable size of pump and accessories and standby DG set in order to ensure continuous pumping for 24 hours and yield test by 'V' notch method/ orfice method. Note :- The cost of provision/ hiring and transportation of of all T&P required for testing and other equipments required are deemed to be included in quoted rate.

M & L for Chemical and bacteriological testing of water sample to ensure potability of water complete including collection of samples, carrying to Lab and testing charges etc. complete all as specified and directed.

Supply and fix CI non return valve flanged ended PN-1.0 of 65mm bore complete all as specified and directed.

M & L for Stainless steel Submersible pump set, electric driven 415 V, of Capacity 12.5 HP with head range of 28-135 RM and discharge of 560-250 LPM, outlet size 65 mm suitable for 200 dia bore well, complete all as specified and directed. Make : Crompton , 650 CS Series Rating-650CS125-12510 or equavalent, as approved make of Appendix 'D'

M & L for vertical openwell submersible pump set of capacity 20 HP/15 KW with available head 74-147 RM and discharge range 820-320 LPM with outlet 65 mm complete all as specified and directed. Make : Crompton, CROSV6T35-20 or equavalent, as approved make of Appendix 'D'

M & L for Star Delta Starter suitable for Submersible motor of Capacity 12.5 HP / 9.3 KW 3 Phase, Relay Range 8-12A, complete all as specified and directed.

M & L for Star Delta Starter suitable for Submersible motor of Capacity 20 HP 3 Phase, Relay Range 15-22A, complete all as specified and directed.

M & L for submersible copper cable of 10 Sqmm 3 Core Complete all as speified and directed.

Supply and fix UPVC Pipe of 65 mm bore of SH 40 grade including jointing materials complete for coloumn pipe suitable for lowering in 200 mm bore complete all as specified and directed .

S&F 2000 Ltrs capacity, rotational moulded polyethylene water storage tanks (cylindrical vertical with closed top) hoisted and fixed in position all as specified in SSR Part – I, including inter connection of tanks and 25 mm gate valve, making arrangement for draining out the entire tank complete all as specified and directed.

Supply, laying and testing MS Pipes ERW Steel duly welded/ flanged including all fittings as required at site during laying of pipe line including specials, nominal dia 80 mm as per IS 1239 Part-I (2004), thickness 4.8 mm, complete all as specified and directed.

Excavation in trenches not exc 1.5 mtr wide and not exc 1.5 m in depth in hard / dense soil for laying underground pipes etc, complete all as specified and directed.

Returning, filling in incl spreading,levelling watering and well ramming in layer n exc 25 cm thick in soil each layer, complete specified and directed.

Removing excavated surplus material to a distance n.exc 50 m and deposting where directed at a level n exc. 1.5 m above the starting point in any type of soil complete all as specified and directed.

Supply and fix Sluice Valve 80mm (3”) dia of class PN - 1.6 suitable for fixing with MS Pipe / Tee for making draining arrangement complete all as speicifed and directed.

M & L for 80 mm MS tee suitable for fixing with 80mm MS Pipe and Sluice valve for making drain arrangement of pipe line complete all as specified and directed.

S&F Nylon rope twisted , virgin poly propylene , 10 to 20 mm , suitable size for hanging submersible pump complete all as specified and directed.

M&L for cement concrete (1:2:4) type B2 with 40 mm graded aggregate for foundation of HDPE tanks and near bore complete all as specified and directed.

Supplying, laying, jointing and testing cable XLPE insulated IS 7098 (Part-I)-1988, ISI marked, screened, PVC sheathed, armoured electric power cable (heavy duty) with aluminium conductor for working voltage upto and including 1100 volts, cross sectional area of cable 35 sqmm 3.5 core laid in trenches/fixed on pole/wall/passed through pipe complete all as specified and directed.

M & L for Sand cushioning for under ground cables provided with a layer of sand 8 cm deep before laying the cable and 15 cm depth after punning down and stretching the cable complete all as specified and directed Note. 18cm compacted thickness of sand shall be measured & paid.

M & L for laying dry bricks old size with sub class 'B' made of burnt clay best quality locally available with permissible tolerance , laid straight in trench for protection of cable complete all as specified and directed.

Material & labour earthing complete with galvanized steel earth plate electrode 600x600x6mm thick buried directly in ground (earth pit not less than 2.25 mtr depth below ground level at any type of strata) with top edge of the earth plate not less than 1.5mtr below normal ground level surrounded with adequate quantity of charcoal dust mixed with salt to a packed thickness of 15cm all around the plate. Connected with galvanised iron earth strip 25x4mm by means of bolts, nuts hook nuts and washers as earth lead including concrete chamber of PCC 1:3:6 type C1 (using 20mm graded stone aggregate) with fair finish, internal surface of concrete chamber shall be given internal dia 300mmx300mm, 15mm thick plaster in CM 1:4) funnel with wire mesh, RCC pit cover of 320x320x80mm size in (1:2:4) Type B1 (using 20mm graded stone aggregate ) reinforced with XPM all as shown in electrical plate No 3 of MES SSR Part-1 (2009) and specified including and provision of GI strip of 25x4mm upto 7.5 mtrs long and watering pipe of GI 20 mm bore, medium grade, including all excavation and earth work and connecting the earthing strip, including testing on completion complete all as specified and directed. Note : (i) RCC pit cover shall be precast of RCC(1:2:4) type B1, 80mm thick reinforced with XPM weighting not less than 4kg/sqm in lieu of CI cover.

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