SPL REPAIR AND REPLACEMENT OF BOREWELLS AT SECT A SECT C OLD EME AND ENGR REGT PUMP HOUSE AT DINJAN

Amount

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.

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.

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

Supplying & laying in trenches 150 mm nominal dia ductile iron pressure pipe for water mains, centrifugally cast, spigot and socket ends (for push on joints), class K7 in any length, conforming to IS 8329-2000, outside shall be zinc coated with finishing layer of black bitumen/blue epoxy coating duly ISI marked including Rubber gasket joints (push on joints) complete all as specified and as directed.

Supplying & laying in trenches 100 mm nominal dia ductile iron pressure pipe for water mains, centrifugally cast, spigot and socket ends (for push on joints), class K7 in any length, conforming to IS 8329-2000, outside shall be zinc coated with finishing layer of black bitumen/blue epoxy coating duly ISI marked including Rubber gasket joints (push on joints) complete all as specified and as directed.

S & F water meter, removable mechanism woltman type, class B, nominal size 100 mm, flanged ends as per ISO 4064 including cutting, threading, fixtures and fittings, etc. complete all as specified and as directed.

M & L in repairs 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 150 mm including nuts, bolts, packing sheets, a pair of rubber gasket ISI mark, complete all as specified and as directed.

M & Lfor in repair 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.

Supply and laying ductile iron fittings (ISI marked) as per IS 9523:2000 (reaffirmed 2005)) for spigot socketed pipes such as bends (any type radius and angle), tapers any type (straight, bends, increasing, decreasing or double socket etc.), tee pieces, single branch, 'Y' junction, double branch, cross (all sockets or socket and spigot), collars, caps and plugs suitable for bore of pipe up to 200 mm complete all as specified and as directed.

S & F flanged reflux valve (non-return) of single door, swing check type nominal pressure (PN 1.6) of preferred materials as per IS 5312 (Part 1): 2004, nominal size 100 mm complete all as specified and as directed.

Supply, installation, testing and commissioning submersible pump, electric driven 415 V, TP 20 HP suitable for proposed borewell required discharge 700-1900 LPM at 79m head all as specified and directed. Make :Make as mentioned under Appendix "B" complete all as specified and as directed.

Drilling pilot bore hole of 250 mm dia by Reverse Rotary Dig Circulation 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 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.

M & L for development of trial bore by reaming of bore well from 250 mm dia to 450 mm dia hole in two steps from 250 mm to 350 mm, 350 mm to 450 mm upto 60 m depth below the ground level from the top of ground including disposal of soil from the site complete all as specified and as directed.

M & L for development of trial bore by reaming of bore well from 250 mm dia to 450 mm dia hole in two steps upto 450 mm depth exceeding 60 m but not exceeding 180 mtrs depth below the ground level from the top of ground including disposal of soil from the site 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, 200 mm nominal bore of pipe, 5.4 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, 200 mm nominal size, 7 mm wall thickness, 1 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.

Supplying, assembling, jointing and lowering 5.4 mm wall thick 200mm diameter (internal) ERW pipe 6.00 mtr long, bail plug made by 200mm diameter ERW pipe and one closed by 7 mm thick MS plate welded and fixing in position (including necessary cleaning internal and external surfaces and painting inside and outside of pipes with two coats of black paint for drinking purpose) and fixed at bittom of casing pipe plane ended jointed by suitable size socket with full welding complete sorrounding the pipes in both ends to make leak proof complete all as specified and as directed.

Supply and fixing MS reducing socket 250x200 mm having thickness 6.0 mm wall thickness heavy duty with 20x4 mm MS flat iron centre guide 400 mm long 04 No for jointing housing/ blank pipe of bore well including necessary welding work complete all as specified and as directed.

Supplying, designing, packing gravel, hard quartz (about 90-95 percent silicon dioxide (SiO2)) or other suitable material with an average specific gravity of not less than 2.5, not more than 10 percent by weight of the material shall have specific gravity of less than 2.25, not contain more than 5 percent by weight of calcareous material, not more than 2 percent by weight of thin flat or elongated pieces, the larger dimension not be more than 3 times the smallest dimension, sub rounded to rounded grains with least angular features, free from impurities such as shale, mica, feldspar, clay, dirt, loam, hematite, organic material etc. for the tube well in accordance with IS: 4097: 2019 as per the site requirement 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 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.

S & F pressure gauge 4" dial 0 to 14 kgs rating complete all as specified and as directed.

Mobilisation of accessories/tools/plants/equipment as per IS 2800: 2019 for construction of borewell of 600 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.

Supply and lowering MS pipe heavy grade with all fittings laid in floor or fixed to the walls or celling of size 100 mm bore 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.

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.

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.

Fabrication and supply of Strata sample wooden box, made out of 20mm thick veneered particle board and partition with 12 mm thick plywood with job 1200x750 mm with 10 partitions of size of 150mm x 150mm, 100mm deep with front glass sheet sliding type cover with aluminium frame all round, 2 No's key hole plate of size 40x25x3mm thick, complete all as specified and as directed. (Name of tubewell, location, strata sample with depth shall be written as per direction of Engineer-in-charge.)

Supply and fixing galvanised steel wire rope multistrand of size 8 sqmm as per ISO 4309 : 2019 and safe for carry a point load of 48.6 KN/5 Ton, for lowering of pump/column pipe, complete all as specified and directed by Engr in charge. Make Usha Martine Model Hyflex 18

Testing of water sample of untreated water , treated water at installation and also at user end for bacteriological analysis & Chemical analysis from NEIST Jorhat/ DRL Tezpur or any Govt. approved / recognized Lab as approved by the GE complete all as directed.( Note: Test report shall be submitted to GE along with RAR /FB)

M & L for cement concrete M15 (Nominal Mix) using 40 mm nominal size graded crushed stone aggregate 100 mm thick in flooring finished even and smooth without using extra cement complete all as specified and as directed.

S & F hot rolled medium and high tensile structural steel of grade E 250 quality C conforming to IS 2062: 2011 as in Compound girders and stanchions, lattice girders, aerial masts, staging for water tanks and the like including caps, bases, splices etc. built up from two or more beam or channel sections or angles with plates, including all lattice bars, stiffeners, gusset plates, etc. complete all as specified and as directed.

Supplying & laying in trenches 100 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.

Supplying & laying in trenches 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.

Cutting the existing cast iron/ galvanised iron pipes 100 mm bore in position for insertion of new tees, branches, 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.

S & F submersible cable flat PVC insulation of type C and having PVC sheath of type ST2, flexible copper conductor, FR-LSH, 3 core of size 10 sqmm complete all as specified and as directed.

Supply, laying, jointing, testing and commissioning cross-linked polyethylene (XLPE) insulated cable for working voltages of 1100 V, PVC sheathed, armoured, 3 core with reduced neutral conductors (3½ 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.

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.

Supplying & fixing to walls and ceilings or laid in floors 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.

Supplying, installing, testing and commissioning chemical dosing pump, made of plastic, diaphragm type, capacity 06 litres per hour @ 10 kg back pressure comprising suction valve, delivery valve etc. operated on single phase AC electric supply, 230 V, 50 Hz complete all as specified and as directed.

M & L for earthing complete with galvanised steel plate earth electrode 600 mm X 600 mm X 6 mm thick, 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 32 mm X 6 mm galvanised mild steel strip by means of bolts, nuts, check nuts and washers of galvanised iron from earth plate 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, 40 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 100 mm dia cast iron Venturi flanged type of length about 2 mtr including nuts bolt & washers etc complete all as specified and as directed.

Supply , installation, commissioning and testing of outdoor type, LT panel board of size 1000 mm X 600 mm X 500 mm, CPRI approved factory made, double door, powder coated suitable for 3 phase 4 wire 415 V, 50 Hz and provided with suitable 'U' type gasket to make it dust/vermin proof & general construction confirming to IS: 8623/93, floor block mounting type made out of 3.15mm thick CRCA sheet with using 50 mm X 50 mm X 6 mm angle iron frame, factory fabricated duly compartmentalized for each control gear with front & back openable, lockable / openable by keys from both sides louvers & air vent gasket for natural flow of air and to accommodate incoming/ outgoing MCCBs and alike complete including fixing of undermentioned MCBs and alike as under: - (i) Incoming: - (a) MCCB, 63 Amps, 4 pole, 35 kA, 415 Volt- 01 No (b) LED Indicator lamp RYB - 01 (set of three) (c) Digital multifuction meter with relay model C class 1- 01 nos (d) Aluminium bus bar 4 strip, 100 amps (e) Ammeter of size 96mm x 96mm flush mounted digital type, three phase of class 1.0-.1 No (f) Internal connections by aluminium strip from MCB/MCCB to bus bar and bus bar to MCB/MCCB etc. (ii) Out going (a) MCCB, 40Amps, 3 pole, 25 kA, 415 Volts- 01 Nos (b) Star delta starter, 3 phase, 415Volt with upto 25 HP capacity- 01 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.)

M & L for construction of new valve chamber of size 1020mm X 1020 mm X 1020 mm including necessary earth work in any type of soil, PCC foundation M10(Nominal Mix) using 40 mm nominal size graded crushed stone aggregate as in base concrete, brick work (one and half brick thick) in CM 1:6 with 20 mm thick cement plaster internally and externally in two coats of (12 mm and 8 mm) in cement mortar 1:4, 3 mm thick mild steel cover of structural steel of grade E165 as per IS 15911: 2010 riveted with angle iron (50 mm X 50 mm X 6 mm) frame of structural steel of grade E165 as per IS 15911: 2010, frame welded to base plate of size 150 mm X 12 mm and made of structural steel of grade E165 as per IS 15911: 2010, base plate fixed with 300 mm thick PCC coping in M15(Nominal Mix) using 20 mm nominal size graded crushed stone aggregate 50 mm X 50 mm X 6 mm mild steel washer, PCC benching 200 mm thick in M15(Nominal Mix) using 40 mm nominal size graded crushed stone aggregate with necessary, welding, riveting, bolting including painting exposed steel surfaces with two coats of bituminous paint and embedded surfaces of steel with two coats of tar, finishing exposed faces of concrete surfaces and plaster surfaces with three coats of white wash as per drawing No. TD/EM/6 sheet Nos 1/2 & 2/2 of HQ CE Shillong Zone complete all as specified and as directed.

Surface excavation not exceeding 30 cm deep and averaging 15 cm deep and getting out in soft/ loose soil complete all as specified and as directed.

M & L for hardcore (broken bricks) of gauge not exceeding 63 mm, deposited, spread and levelled in layers not exceeding 15 cm thick, watered and rammed to a true surface complete all as specified and as directed.

M & L for cement concrete M10 (Nominal Mix) using 40 mm nominal size graded crushed stone aggregate 75 mm thick in sub base for laying tiles, pavings, etc. complete all as specified and as directed.

M & L for chequered cement concrete tiles, cast in rubber mould, glossy finish of approved colour, general purpose, double layer, size 20 cm X 20 cm X 25 mm thick, with mixture of white and grey cement in equal proportions and pigments, set, jointed and pointed in neat cement slurry in floor including laying over 15 mm thick bedding of cement mortar(1:6) all as specified and as directed.

M/s Singh enterprises

ms singh construction

PURBANCHAL BUILDERS