SPECIAL REPAIR TO REPLACEMENT OF 02 X BOREWELL AT PUMP HOUSE NO 5 AND 6 AND CENTRIFUGAL PUMP SET AT PUMP NOUSE NO 03 AGAINST BER IN JORJAT MIL STN

Amount

Mobilisation of accessories/tools/plants/equipment as per IS 2800: 2019 for construction of borewell of 550 mm dia bore hole using Rotary Drilling Method (Direct Circulation Method) with all minor accessories at site complete all as specified and directed. Note: The quoted rate shall be inclusive of shifting the accessories/tools/plants/equipment from one site to other for subsequent boring.

Drilling pilot bore hole of 250 mm dia by Reverse Rotary/Rotary Drilling Method (Direct Circulation Method) as described in IS 2800: 2019 in any kind of soil strata including hard stone/boulder upto 120 metre depth and beyond 60 m depth below ground level, including compound/ powder like valmite, bentonite solution, local silty clay etc. to be required as per the site condition including collecting samples from different strata, preparing and submitting strata chart/ bore log all complete all as specified and directed.

Drilling pilot bore hole of 250 mm dia by Reverse Rotary/Rotary Drilling Method (Direct Circulation Method) as described in IS 2800: 2019 in any kind of soil strata including hard stone/boulder upto 180 metre depth and beyond 120 m depth below ground level, including compound/ powder like valmite, bentonite solution, local silty clay etc. to be required as per the site condition including collecting samples from different strata, preparing and submitting strata chart/ bore log all complete all as specified and directed.

Resistivity variation studies in bore hole drilled by electric logging of pilot bores by expert of Geology division to know the potential and temperature probes of drinking water by approved agency duly collaborated with strata chart/bore log complete all as specified and as directed.

Reaming 250 mm dia pilot bore to 550 mm dia bore upto 60 metre depth below ground level complete all as specified and as directed.

Reaming 250 mm dia pilot bore to 550 mm dia bore upto 120 metre depth and beyond 60 m depth below ground level complete all as specified and as directed.

Reaming 250 mm dia pilot bore to 550 mm dia bore upto 180 metre depth and beyond 120 m depth below ground level complete all as specified and as directed.

Supplying, assembling, jointing and lowering steel casing pipe for water wells, plain ended, 250 mm nominal bore of pipe, 7.1 mm wall thickness, ERW (Electric Resistance Welded) type, Fe 450 grade of steel, externally coated with bituminous solution conforming to IS-4270-2001 and fixing in position in different depth as directed, butt welded complete all as specified and as directed.

Supplying, assembling, jointing and lowering steel casing pipe for water wells, plain ended, 150 mm nominal bore of pipe, 5 mm wall thickness, ERW (Electric Resistance Welded) type, Fe 450 grade of steel, externally coated with bituminous solution conforming to IS-4270-2001 and fixing in position in different depth as directed, butt welded complete all as specified and as directed.

Supplying, assembling, jointing and lowering plain slotted pipe, type A, screen made of low carbon galvanized (LCG) steel, 150 mm nominal size, 6 mm wall thickness, max 0.75 mm slot openings conforming to IS-8110: 2019 and fixing in position in different depth as directed, butt welded complete all as specified and as directed.

S & F clamp for housing/ casing pipe, made of flat iron of hot rolled medium and high tensile structural steel of grade E 250 quality C conforming to IS 2062: 2011 and as per IS 2800: 2019 including necessary bolts & nuts of required size complete all as specified and as directed.

S & F bail plug/ bottom plug with hook, 150 mm size, made of material as per IS 4270: 2001, conforming to IS 2800: 2019 complete all as specified and as directed.

S & F centralizer (centring Guides), made of flat iron and bar of hot rolled medium and high tensile structural steel of grade E 250 quality C conforming to IS 2062: 2011 and as per IS 2800: 2019 including necessary bolts & nuts & welding of required size complete all as specified and as directed.

S & F well cap to the top of bore well, made of flat iron of hot rolled medium and high tensile structural steel of grade E 250 quality C conforming to IS 2062: 2011 and as per IS 2800: 2019 including necessary bolts & nuts of required size complete all as specified and as directed.

S & F reducer, 150 mm X 250 mm size, made of material as per IS 4270: 2001, conforming to IS 2800: 2019 complete all as specified and as directed.

Development of tube well in accordance with IS 2800: 2019 and IS:11189 with compressed air method (open well method), to establish maximum rate of usable water yield without sand content (beyond permissible limit), with required capacity air compressor, running the compressor for required time till well is fully developed, measuring yield of well by “V” notch method or any other approved method, measuring static level & draw down etc. by step draw down method, collecting water samples & getting tested in approved laboratory, including disinfection of tube well, all complete, including hire & labour charges of air compressor, tools & accessories etc., all as per requirement complete all as specified and as directed.

Determining approximate yield capacity using the compressor of the drilling rig and carrying out yield test as per IS 2800: 2019 using test pump and determining the yield capacity of bore well, the rate of pumping without lowering the water level below the top boundary of the aquifer, the top of the perforations, the recommended rate of pumping complete all as specified and as directed.

Disinfection of bore well as per IS 2800: 2019 using 200 milligrams of powdered chlorine compound per litre of water present in the well and left in the well for at least 8-12 hours to ensure elimination of any bacteria complete all as specified and as directed.

Supplying, designing, packing gravel (hard, insoluble and roughly rounded) of particle size ranges (2 mm to 3.35 mm, 3.35 mm to 4.75 mm, 4.75 mm to 6.3 mm, 6.3 mm to 8 mm, 8 mm to 12.5 mm) to the tube well in accordance with IS: 4097 as per the site requirement complete all as specified and as directed.

Carrying out testing of water sample of untreated water for all parameters mentioned in Table 1 to Table 6 of IS 10500: 2012 from NEIST Jorhat/ DRL Tezpur or any approved Lab as approved by the GE complete all as specified and as directed.

Supply and lowering column pipe 80 mm bore both end flanged made out of GI tubing medium grade welded at end of column pipe cutting of groove to house submersible cable 3 core length of each column pipe not exceeding 3.10 metres complete all as specified and as directed.

Supply and fixing mild steel chain made of 6 mm dia rod of size 20 mm X 38 mm for holding submersible pump set/column pipe including pipe including necessary holding mild steel clamp nuts, bolts etc. complete all as directed.

Supply and laying or fixing or passing through pipe PVC insulated cable for working voltages of 1100 V, PVC sheathed, 3 core, nominal cross sectional area of main conductor 6 sqmm, solid aluminium conductor, ISI marked as per IS 1554(Part-I): 1988 including cable glands, lugs etc. to suit the cable size in service connections complete all as specified and as directed.

M & L flanged reflux valves(ISI Marked) of single door, swing check type (non return valves) of nominal pressure (PN 1.6) as per IS 5312 (Part 1): 2004, nominal size 80 mm including nuts, bolts, packing sheets etc. complete all as specified and as directed.

M & L for cement concrete in foundation, filling and mass concrete in M10(Nominal Mix) using 40 mm nominal size graded crushed stone aggregate complete all as specified and as directed.

M & L for rising stem type CI sluice valves (ISI Marked)having double flanged SS spindle for connections of nominal pressure (PN 1.6) as per IS 14846: 2000 (Reaffirmed 2010) of preferred materials, nominal size 80 mm including nuts, bolts, packing sheets, a pair of rubber gasket ISI mark. complete all as specified and as directed.

Supplying & fixing to walls and ceilings or laid in floors 80 mm nominal bore, medium grade, galvanised coated steel tube conforming to IS 1239 (Part-1): 2004 including all fittings conforming to IS 1239 (Part-2): 2011 complete all as specified and as directed.

Supply, installation, testing and commissioning of stainless steel submersible pump, electric driven 415 V, TP suitable for 550 mm dia bore well ( Casing pipe size 250 mm) , flow rate not less than 600 ltrs/min, head range 32-80 m, complete all as specified and as directed.

Supply, installation, commissioning and testing factory made, CPRI approved, outdoor type LT panel board of size max upto 1100 mm X 900 mm X 450 mm, made of mild steel sheet of 3.15 mm thick, powder coated, dust & vermin proof, front opening, double doors, compartmentalized, general construction conforming to IS: 8623 (Part 1): 1993, locking arrangements, suitable for 3 phase 4 wire 415 V, 50 Hz with 160 Amps rated copper bus bar, including mounting on angle iron frame made using angle iron 50 mm X 50 mm X 6 mm complete all as specified and as directed and shall be comprising the followings: - INCOMING (a) MCCB rated current(In): 80 A, Icu: 27 kA, Ics: 100% of Icu, Uimp: 8 kV, Ui: 690 V, IP40, fixed thermal and fixed magnetic setting, four pole: 1 No. (ii) Digital multifuction metre- 01 No. (iii) LED phase indicator lamp (RYB)- 01 Set. OUTGOING (i) MCCB rated current(In): 50 A, Icu: 27 kA, Ics: 100% of Icu, Uimp: 8 kV, Ui: 690 V, IP40, fixed thermal and fixed magnetic setting, four pole: 1 No (ii) MCB 40 A, 2 pole, 10kA- 01 No. (iii) Fully automatic star delta starter 3 Phase, 415 volts, 15 HP – 01 No (iv) spare compartment -02 No (Note: The rate quoted by tenderer also includes to fix the legs of the panel box in cement concrete M15(Nominal mix) using 20 mm nominal size graded crushed stone aggregate 30 cm below GL and the box will be kept nearly 45 cm above GL including earthwork and allied services complete. The legs of the box will be of 50 mm X 50 mm X 6 mm of length 750 mm.)

Excavating in trenches not exceeding 1.5 m wide and not exceeding 1.5 m in depth; for foundation, etc. or for shafts, wells, cesspits, manholes, pier holes, etc. or for cable laying or water supply pipes lines etc or not exceeding 10 sqm on plan and not exceeding 1.5 m in depth and getting out in soft/ loose soil complete all as specified and as directed.

Removing excavated material (soils) not exceeding 50 m and depositing where directed at a level n exc. 1.5 m above the starting point

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

Supply & spreading in trenches sand cushioning to underground cable in trenches including spreading, levelling hand punning down complete all as specified and directed Note:- Depth of sand cushioning will be measured after punning down and levelling the sand properly.

M & L for laying of bricks locally available sub class 'B' bricks (old size) for cable protection cover laid flat and dry in trenches over the cable perpendicular to the direction of cable all as directed.

Supply, laying, jointing, testing and commissioning cross-linked polyethylene (XLPE) insulated cable for working voltages of 1100 V, PVC sheathed, armoured, 4 core, nominal cross sectional area of main conductor 25 sqmm, stranded aluminium conductor, ISI marked as per IS 7098(Part-I): 1988 including cable glands, lugs etc. to suit the cable size and to be laid in trenches, fixed along pole, under floors, through GI pipe laid under floors/roads, through concealed GI pipe along wall etc. complete all as specified and as directed.

M & L for construction of new valve chamber of size 600 mm X 600 mm X 600 mm with burnt brick (Sub class B) including necessary earth work in any type of soil, PPC foundation (1:4:8) type D-2 20 mm grade stone aggregate as in base concrete, brick work in CM 1:4 with 10 mm thick plaster internally and 15 mm thick externally in CM 1:4, 4 mm thick MS cover with hinges and locking arrangement fixed to angle iron frame made out of 40 mm X 40 mm X 6 mm MS angles complete with 2 coats of synthetic enamel paint over one coat of red oxide prime on all metal works & three coats of white wash on all plastered surfaces of valve chambers complete all as specified & directed by Engineer-in-Charge.

Construction of the supporting arrangement with 100 mm GI pipe medium grade as pillar and angle work ISA 50x50x6 mm duly welded to a minimum height of 5.0 meter above GL for fixing up chain pulley for pull out the column pipe from bore well in case of failure of whenever required, GI pipe shall be grouted in PCC M15 (Nominal Mix) using 20 mm nominal size graded crushed stone aggregate to a minimum 1.0 meter depth with angle iron frame embedded in GI pipe including painting with two coat of synthetic enamel paint of a coat of red oxide primer after preparing the steel surface and necessary earth work complete all as specified and directed by Engineer-in-Charge .

M & L for earthing complete with galvanised steel pipe electrode 600mm x 600 mm x 6 mm thk, buried directly in ground (earth pit not less than 2.25 metres deep below ground level) with top edge of the plate not less than 1.5 metres below normal ground level, connected to earthing lead of 4 mm dia galvanised mild steel strip by means of bolts, nuts, check nuts and washers of galvanised iron from pipe electrode to test point upto 7.5 metre including all as shown in electrical plate No.3 of SSR Part I (2009) including necessary concrete chamber in cement concrete M15 (Nominal Mix) using 20 mm nominal size coarse aggregate, precast RCC cover slab in cement concrete M15 (Nominal mix) using 20 mm nominal size coarse aggregate of size 40 cm X 40 cm X 5 cm reinforced with 8 mm dia TMT bars @ 150 mm c/c with one handle for lifting made out of 8 mm dia bar, GI funnel, GI wire mesh filter, 20 mm dia GI pipe medium grade for watering, 20 mm dia GI pipe medium grade for protection of earthing lead, charcoal or coke and salt in alternate layers including necessary excavation and earth work in any type of soil/ strata and testing complete all as specified and as directed by the Engineer-in-charge.

S & F water meter, nominal size 80 mm, class B, cast iron body with flanged ends including cutting, threading, fixtures and fittings, etc. complete all as specified and as directed.

Supplying, installing, testing and commissioning 15 HP monoblock pump single stage, suction and delivery size 100 mm X 100 mm, 2900 RPM, Head range 8-34 m with CI impeller, CI casing and CS shaft with energy efficient level 2, induction motor conforming to IS:12615, capacity suitable for working voltage 415 volts, 3 phase, 50 Hz, including fully automatic star delta starter, including all necessary electric connection from starter to pump including 3 core multi stranded copper conductor of size 4 sqmm of 10 running metre with lugs complete all as specified and as directed.

Supplying & laying in trenches 100 mm nominal dia ductile iron pressure pipe with spigot socket/ cast flanged ends, suitable for rubber joint centrifugally cast, class K9, conforming to IS, in any length complete all as specified and as directed. Note- Rubber gasket joints (push on joints) shall be measured and paid separately.

Supplying & laying ductile iron specials (class K9 as per IS 9523: 2000) of any type, any radius/ angle, any nominal dia for mechanical and push on joint/flange joints for cast iron or ductile iron pressure pipe lines complete all as specified and as directed. Note- Rubber gasket joints (push on joints) shall be measured and paid separately.

M & L for rubber gasket joints (push on joints) for spigot/socket/ flanged end ductile iron water mains/ductile iron specials complete for 100 mm nominal dia complete all as specified and as directed.

M & Lfor rising stem type CI sluice valves (ISI Marked) having double flanged SS spindle for connections of nominal pressure (PN 1.6) as per IS 14846: 2000 (Reaffirmed 2010) of preferred materials, nominal size 100 mm including nuts, bolts, packing sheets, a pair of rubber gasket ISI mark, complete all as specified and as directed.

M & L flanged reflux valves (ISI Marked)of single door, swing check type (non return valves) of nominal pressure (PN 1.6) as per IS 5312 (Part 1): 2004, nominal size 100 mm including nuts, bolts, packing sheets etc. complete all as specified and as directed.

S & F foot valve conformimg to IS 4028, 80mm dia, complete all as specified and as directed.

Supplying & laying in trenches 40 mm nominal bore, light grade, galvanised coated steel tube conforming to IS 1239 (Part-1): 2004 including all fittings conforming to IS 1239 (Part-2): 2011 complete all as specified and as directed.

Cutting chases in stone, concrete block walls & slabs to ends or edges of landings, steps, cills, sunshades, shelves, lintels, etc.; and cutting chases for concealed water tubing or concealed conduit wiring, etc., exceeding 10 cm but not exceeding 20 cm girth and making good the same with cement concrete M15 (Nominal Mix) using 12.5 mm nominal size coarse aggregate or cement mortar 1:3 including necessary plaster and pointing in cement mortar 1:3 complete all as specified and as directed.

Supply, installation, commissioning and testing factory made, CPRI approved, outdoor type distribution panel board of size 1800mm x 1500mm x 400mm, made of mild steel sheet of 2.00 mm thick, powder coated, dust & vermin proof, front and rear openable, double doors, compartmentalized, general construction confirming to IS: 8623 (Part 1): 1993, locking arrangements, suitable for 3 phase 4 wire 415 V, 50 Hz with 300 Amps rated copper bus bar, including mounting on angle iron frame made using angle iron 50 mm X 50 mm X 6 mm complete all as specified and as directed and shall be comprising the followings: - INCOMING: - (a) MCCB rated current(In):125 A, Icu: 30 kA, four pole: 1 No (b) Digital multifunction meter – 01 Nos (c) LED phase indicator lamp (RYB)– 01 Set (d) Changeover Switch 125 Amp- 1 No. OUTGOING: - (a) MCCB rated current(In): 63 A,18 kA, 03 pole: 03 Nos (b) MCCB rated current(In): 40 A, 18 kA, four pole: 1 No (c) MCCB rated current(In): 6-32A, 10 kA, 02 pole: 1 No (d) Automatic star Delta starter and motor protection Relay- 04 Nos (e) Spare Compartment- 02 Nos (Note: The rate quoted by tenderer also includes to fix the legs of the panel box in cement concrete M15(Nominal mix) using 20 mm nominal size graded crushed stone aggregate 30 cm below GL and the box will be kept nearly 45 cm above GL including earthwork and allied services complete. The legs of the box will be of 50 mm X 50 mm X 6 mm of length 750 mm.)

PURBANCHAL BUILDERS

KAY CEE CO. INDIA

HEMONTA DAS