CWE KOTA/ALW-27 OF 2020-21 SPECIAL REPAIR/REPLACEMENT OF BOREWELLS AT ITARANA CANTT, ALWAR

Amount

Excavation in trenches, n exc 1.5 m wide and n exc 1.5 m in depth for laying of pipe and getting out in soft soil including cutting of roads where reqd, complete all as specified & directed.

Returning, filling in, including spreading, levelling, watering and well ramming in layers not exceeding 25 cm thick in soft/loose soil complete all as specified and directed.

Removing excavated surplus material (Soils) to a distance not exceeding 50 mtr and depositing where directed at a level not exceeding 1.5m above the starting point complete all as specified and directed.

M & L for PCC 1:2:4 type B-2 using 40 mm graded crushed stone aggregate as in pedestal of bore well including sanitary sealing of bore well & bacterogical treatment etc, making weathring, slightly rounded or chambered angle and throating in concrete and necessary form work, finishing all exposed faces of concrete even and smooth using extra cement complete all as specified and directed.

Trial bore holes 150 mm dia in any type of strata (except hard rock) of bore well (if the same is found fit then to be continued with further process otherwise to fill up the same hole), preaparing and submitting the strata details both graphically recorded as well as strata results complete all as specified and directed. Note :- The rates quoted shall deemed to include to get survey done for availability/feasiability of water as recommended by CGWD before execution of work.

Widening of trial bore by drilling with Rotary systems in any type of strata (except hard rock) upto 450 mm dia bore at any depth including all works pertaining to boring in all respect complete all as specified and directed.

Widening of trial bore by DTH method in hard rock upto 200 mm dia bore at any depth till meeting water strata including all works pertaining to boring in all respect complete all as specified and directed.

Widening of trial bore by drilling with ODEX system in hard rock upto 200 mm dia bore at any depth including all works pertaining to boring, complete in all respects complete all as specified and directed.

Supply, assembling, jointing, lowering and fixing/holding in position ERW MS casing pipe ISI marked (IS-4270-1992), 200 mm dia of 5.4 mm thickness (minimum) upto required depth below ground level in all strata including cutting welding of pipe at joints and strenghthening joints by providing 04 Nos. MS strips of size 300mm long of flat iron 50x6mm at each joint of pipe with proper welding all around the strips and finishing external/outside surface of casing pipe by applying two coats of approved bitumenous anicorrosive paint before lowering complete all as specified and directed. Make - TATA/Swastik/Jindal/Prakash Note : Rate quoted by contractor shall deemed to include for S & F well cap 200mm dia on top of pipe with locking arrangement till the bore well become functional complete.

Supply, assembling, jointing, lowering and fixing/holding in position ERW MS slotted casing pipe, 200 mm dia of 5.4 mm thickness (minimum) having slots of 1.59 mm wide 75 mm long assembled and lowered as per location chart approved by the GE in all strata including cutting welding of pipe at joints and strenghthening joints by providing 04 Nos. MS strips of size 300mm long of flat iron 50x6mm at each joint of pipe with proper welding all around the strips and finishing external/outside surface of casing pipe by applying two coats of approved bitumenous anicorrosive paint before lowering complete all as specified and directed. Note : Rate quoted by contractor shall deemed to include for S & F well cap 200mm dia on top of pipe with locking arrangement till the bore well become functional complete.

Taking out from unserviceable bore well existing unserviceable column pipe of 50mm bore including old unserviceable submersible pump sets and M & L for 50 mm bore GI, medium grade, column pipe (Length of each pipe shall not exceed 6 metre), with flanged joints, flanges of pipe duly fitted with proper size GI nut, bolts & rubber gasket etc as required at site suspended in deep well complete with slotted clamps of required size at regular intervals for holding submersible cable all as required for completion of work complete all as specified & directed. Note : Rate quoted shall deemed to include for arrangement of all T & P required for Taking out/dismantling of column pipe and detaching submersible pump sets. Make : JINDAL/TATA

Supply and packing with Pea gravel of 4.6 mm to 8 mm size of approved quality as ordered to pack around the casing/slotted pipe in bore well, complete, all as specified and directed.

Development of bore well by compressed air with compressor of minimum capacity of 150 PSI/450 CFM, till sand/mud free clean water is obtained to obtain minimum discharge 25000 LPH complete all as specified & directed. Note:- (i) Yield test for the bore well by continously pumping to determine safe pumping yield to be carried out by cotnractor at site and necessary report to be submitted. (ii) Testing of water for potability, dissolved solids, physical/chemical and bactorogical testing etc from the govt lab shall be carried out by the contractor all as directed and test report shall be submitted. (iii) The rates quoted shall deemed to include the above provisions.

S & F housing clamp 90 cm long 7.5 cm wide made out of 6 mm thick MS plate for 200 mm dia casing pipe with necessary MS Bolts, nuts & washers at ground level grouted in bed block casted in PCC (1:2:4:) type B-1 using 20 mm graded crushed stone aggregate complete all as specified and directed.

M & L for strata sample box of second class hard wood (Hollock/Bijasal) of size 40cm x 30 cmx 20 cm, complete all as specified & directed.

Supply, installation, testing and commissioning submersible pump set, electric driven, 3 Phase, 415 volt, 50 Hz, 18 stage having discharge upto 14000 Lit/hrs at head not less than 216 metres of capacity 15 HP complete, all as specified & directed. Model No. & Make :- Model No. CHORA CHROM 150-17/20 +UMAI 150-13/22 of KSB or equivalent model of make Kirloskar/Crompton Greaves. Material of Construction:- Impeller- Stainless steel, Diffusor -Stainless steel, Diffusor casing : Stainless steel, shaft - Stainless Steel, Bearing Sleave - High Crome Stainless steel.

S & F 10 sqmm multistranded copper conductor 3 core ,PVC insulated and sheathed 1100 volts grade flat submersible cable, fixed to column pipes with suitable clamps and jointing material complete all as specified and directed. Note :- (a) Submersible cable shall pass through GI pipe from starter panel board to submersible pump. (b) GI protection pipe shall be measured and paid for separately under respective item of the BOQ. Make:- Havells/Finolex/Polycab.

Supplying, Fixing/laying, jointing, testing and commisioning of size 3.5 core 50 Sqmm LT under ground cable, XLPE insulated, screened, PVC bedded, galvanised steel strip or wire armoured, electric power cable (heavy duty) with multistranded aluminum conductors, 1100 Volt grade, laid in trenches / ducts / encased in GI pipe / fixed to pole/wall complete all as specified and directed Note :- Exacavation and earth work, GI pipe for laying of cable, sand cushioning, cable protection cover shall be measured and paid seprately under respective items of the BOQ.

Taking up or down steel tubing and connections 80mm bore and removing unserviceable pipe from site and Supplying, laying, jointing/connecting and testing for 80mm bore steel tubing galvanised medium grade with all fitting laid in trenches, fixed to walls, ceilings or laid in floors complete all as specified and directed. Note:- Exacavation and earthwork shall be measured and paid separately under respective items.

Taking down old unserviceable non return valve and supply, install, connecting and testing of cast iron body non return valve, 80mm bore (as per IS 5312), heavy duty, double flanged, ISI marked including jointing materials i.e rubber gaskets, nuts, bolts etc for submersible pump complete all as specified and directed.

Taking down old unserviceable sluice valve and supply, install, connecting and testing of sluice valve, 80mm dia bore, class PN- 1.6, double flanged with CI body, wheel and brass spindle and nuts etc., non rising type IS- 14846 marked including jointing materials i.e. rubber gaskets, nuts, bolts etc. complete all as specified and directed.

M & L for connection GI Pipe Line 80 mm to CI/GI pipe (water mains) in position for branch connection upto 80/100 mm dia pipe including suitable fittings, clamps and rubber locking etc complete all as specified and directed.

M & L for brick work with FLY ASH BRICKS {As per IS-13757 (1993) burnt clay fly ash building bricks}, (OLD SIZE BRICKS) with width equal to the length of the brick laid dry & flat abutted with each other with gap between adjacent bricks not exc 10 mm over UG cable for protection, complete, all as specified & directed.

M & L sand cushioning for under ground cable 23cm thick (one layer of 8cm thickness before laying the cable and other layer of 15cm thickness after laying the cable) all as directed. (NOTE- Thickness after punning shall be considered for payment.)

S & F Galvanised steel tubing 50mm bore light grade for protection of under ground cable/submersible cable on poles / walls under road crossing, starter panel to submersible pump etc conforming to IS-1239 and including clamps complete all as specified and directed. Note: Excavation & earth work shall be measured & paid separately under respective item of this BOQ.

Taking down old unserviceable LT panel and Supply, installing, testing and commissioning, factory made and tested (incl CPRI type test certified), LT feeder pillar box (KIOSK) of adequate dimensions (as per Indian Electricity rules) to accommodate following components, outdoor type, platform mounted, suitable for 415 volts 3 phase 4 wire, 50 Hz AC supply system, having bus bar chamber with insulated Copper bus bars 200 Amps rating installed on porcelain insulators. The panel shall be dust and vermin proof, IP-65 class protection and made of 3.15mm CRCA MS sheet and 40x40x6mm thick angle iron frame work, powder coated finish over one coat of red oxide primer outside and two coats of red oxide primer on inside, front & rear opening type, with aprons for cable entry, with double door shutter and locking arrangement {including provn of 65mm Godrej (Freedom) lock with 2 keys}, internal wiring with PVC insulated, multistranded copper conductor, FRLS cables, IS-694 marked of adequate size but not less than 4 sqmm. The scope of work includes the following:- INCOMING & OUTGOING (a) MCCB 100 Amp, 35 KA rating 4 pole 440 volts - 01 No Make - ABB/Legrand/L&T. (b) MCB - 63 Amps, TPN 440 V, 16 KA-01 No Make - ABB/Legrand/L&T. (c) Starter, star delta, fully automatic sutiable for 15 HP 3 phase, elect motor - 01 No (Make-L&T/Havells/AE)

(d) Multifunction meter Class, 1.0, three line bakelite LCD display with back sealing arrangement, with meter rub hour & power on hour, AVG, Max & total value of Active, reactive & apparent power & span shot of power (KW), current (I), Voltage (V) & PF with programmable CT Ratio of -/5A alongwith sutiable size core CTs for current sensing (Make HPL, Cat Part No. NEMFVIFPPE000 or equivalent of Make : L&T/Secure/Conserve). (e) Single phase preventor mini lec VSP-II-01 No Make- havells/ABB/L&T/BCH/C&S. (f) Phase sequance corrector 15 HP motor, 3 Phase-01 No Make - Havells/ABB/L&T/BCH/C&S. (g) Indication lamp 22.5mm dia LED type 240 volts AC to show three phase availability - 01 set. (h) Wiring with suitable size copper doncudctor cable not less than 6 sqmm PVC sheathed copper conductor for LT panel. (j) Power factor correction capacitor, bottle type, 3 KVAR, 3 Phase - 01 No (Make - Legrand/ABB/EPCOS. Notes (a) All armoured cables shall enter through bottom of the feeder pillar duly glanded and socketed and connected to MCCB/cable terminal. Cost of glanding socketing etc are deemed to be included in the unit rate of feeder pillar. (b) All the out going cable shall be terminated in bakellite cable connector and shall be duly glanded and socketed. (c) All the cables (power and control wiring ) should be terminated duly socketed with heavy duty tinned copper lugs, GI bolts/screws nuts, flat washers and spring washers as required. (d) White acrylic marker plate (for feeder / switch marking ) to be provided with black lettering by heat press machine as indicated in drawing and to be pasted over the panel door/near the cable connector with high quality adhesive. (e) Quoted rates shall be deemed to include for grouting/ fixing of bus bar chamber in PCC 1:3:6 type C2 and PCC block masonry with PCC block of mix 1:5:8 & plastering 10mm thick in CM 1:6. (f) The consolidated rate for Srl No. 26.00 & 26.10 shall be quoted against Srl No. 26.00 of BOQ.

M & L for earthing complete with galvanized steel earth plate 60 cm X 60 cm X 6 mm thick buried vertically in ground to depth not less than 2.25 metres deep below ground level, with top edge of earth plate not less than 1.5 m below ground level, connected to galvanized strip 25x4mm earth lead by means of bolts, nuts, check nuts and washers of galvanized iron or steel besides welding at all joints as shown in drawing and including excavation and earth work, GI pipe light grade 40mm bore for protection of strip and connected to continous earth lead on pole/test point, supplying and laying charcoal dust common salt PCC 1:2:4 type B1, chamber and MS angle iron frame 40x40x3mm and RCC cover 40mm thick (1:2:4) type B1 using 20mm graded stone aggregate reinforced with 6mm dia round bars @ 75mm C/C both ways with MS handle 12mm dia, PGI funnel and wire mesh, 20mm dia GI pipe medium grade for watering all as shown in electrical plate No 3 on srl page No 497 of SSR Part I (2009) drawing and connection to earth test point including testing complete all as specified and directed. Note : (i) The cost of earth lead /strip and GI pipe for protection of earth lead/strip upto 7.5m is included in the quoted rate. (ii) The cost of excavation, earth work is included in the quoted rate.

DEMROT ELECTRICAL WORKS