Construction Testing and Commissioning of Kashipur water supply scheme Zone 3

Amount

Soil testing of proposed O.H.T. site by some reputed institute like I.I.T. Roorkee or equivalent & accordingly design and construction of 850 KL capacity, 22m staging RCC Over Head Tank with foundation considering seismic forces, including supply of all materials, labour, T&P etc. as required for proper completion of work and submission of detailed design/drawings before starting of the work. The earthquake resistant design must be in conformity with IS:456, IS:3370,IS:1893, IS:13932 & IS:13920 (latest versions) etc. Water retaining portion i.e. container of O.H.T. will be constructed in M-30 design mix concrete as per latest guidelines of BIS. The work also includes the following item

One meter wide balcony around the tank at the middle ring beam (Junction of conical wall and containers vertical wall).

One meter wide RCC two columns stair case as an access to the top dome of the tank from ground level.

Supplying & fixing M.S. gate with locking arrangement on first landing to avoid access to the O.H.T. as per direction of Engineer-in-charge.

Supplying & fixing of 60cm, wide M.S. ladder from tope dome to the inside of the tank upto bottom dome of 50×50×6mm angle iron and 20mm dia plain M.S. bars @ 25 cm. C/C welded or riveted with suitable hand rail etc.

Supplying & fixing of 1200mm dia ventilator of 50×50×6mm angle iron fitted at the crown of top dome with mosquito proof wire mesh over expanded metal jali.

Supplying & fixing of 600×600mm M.S. Manhole cover of 5mm thick M.S. plate duly hinged with 50×50×6mm angle iron frame embedded in the top dome at appropriate place with locking arrangement shall be provided with overlap.

Supplying & fixing of Three rows of G.I. (medium) 20mm dia pipe railing with 50×50×6mm angle iron post of clear height 1.00m at a distance of 1.25m centre to centre around the balcony, top dome and along the stair case from ground level to top dome.

Supplying & fixing of water level indicator confirming to latest specifications & as per direction of engineer I/C

Supplying & fixing of lighting conductor arrangements including earthing as per latest I.S. code.

Supplying & fixing of 2 Nos. inlet of 150mm dia , 1 no.outlet of 350mm dia, washout of dia 100mm and over flow of dia 200mm of D.I.D/F (Class K-9) pipes and their sluice valves, (confirming to I.S.-780) duck foot bends on sutaible R.C.C. column based on raft foundation as per direction of Engineer- in- charge, other special etc. including supply of all materials, necessarily required for jointing and erecting. The limits of pipe fixing shall be from dome of the tank to one meter outside the apron of the tank. Overflow pipe shall be vertical type at required position or otherwise specified. Also, construction of 2 Nos. inlet, 1 No. outlet & 1 No. washout/over flow chambers and their R.C.C. covers as per departmental type design. Complete in all respect as per the satisfaction of Engineer-in-charge.

Supplying & Clamping the vertical pipe with M.S. clamps of size 50×6mm.

Filling the tank as many times as required with water and testing for water tightness and making it water tight, water for testing the tank shall be arranged by the contractor.

Supplying & Painting the outlet inlet, washout and over flow pipe with one coat of oxide primer (Asian, Berger, Nerolac etc.) and two coats of paint of approved quality (Asian, Berger, Nerolac etc.) and shade.

Supplying & Painting the entire tank with three coats of (including base coat) exterior weather coat Apex or equivalent of Asian, Berger, Nerolac etc. of approved quality and shade as per direction of the Engineer-In-charges.

Supplying & Painting the balcony and staircase railing and M.S. Manhole cover, ventilator angle iron posts with one coat of oxide primer (Asian, Berger, Nerolac etc.) and two coats of paint of approved quality (Asian, Berger, Nerolac etc.) and shade.

Supplying & Filling of earth, ramming and watering the earth upto the plinth level which will be about 0.75 M above from natural ground level for construction floor & projecting one meter form the tank columns and 1 M wide apron with suitable drain.Floor shall be 40mm thick P.C.C. 1:2:4 over 80 mm thick P.C.C. 1:4:8 at floor of the tank with suitable glass strips. 230 mm thick masonary walls in 1:6 cement sand mortar requires to raise ground level to plinth level including all materials etc.

Providing all materials , carting from site store to site of work, lowering into trenches with true to alignment , Laying & Jointing of full lenght S&S Centrifugally cast (spun) Ductile iron pipes including supply of "EPDM " rubber gaskets conforming to IS : 5382 (Latest version) with testing of pipe line complete. DI K-9 pipe (Rising Main)

150mm dia - D.I. K-9 Pipe

Providing of all materials, carting from site store to site of work, lowering into trenches with true to alignment, laying & jointing of full length S&S centrifugally cast (spun) ductile iron pipes including supply of 'EPDM' rubber gaskets confirming to IS:5382-(Latest version) with testing of pipe line complete. D.I. pipe S&S K-7 (Distribution System)

Providing & Laying D.I. Special of class K-12 suitable for push-on jointing as per IS: 9523-(Latest version)

Excavation in Ordinary Soil (loams, clay, sand) for pipe line trenches including lift up to 1.5 m and lead up to 30 m with back filling, watering and ramming of excavated earth in the trenches.

Disinfecting D.I. water mains by flushing with water containing bleaching powder @ 0.5 gms per litre of water and cleaning the same with fresh water, operation to be repeated three times including getting the sample of water from the disinfected main tested in the municipal laboratory.

80 mm diameter

100 mm diameter

125 mm diameter

150 mm diameter

200 mm diameter

250 mm diameter

300 mm diameter

350 mm diameter

Providing and fixing C.I. sluice valves (with cap) complete with bolts, nuts, rubber insertions etc. (Conforming to IS:780 latest version)

80 mm diameter (Class II)

100 mm diameter (Class II)

125 mm diameter (Class II)

150 mm diameter (Class II)

200 mm diameter (Class II)

300 mm diameter (Class II)

350 mm diameter (Class II)

Constructing masonry Chamber 60x60x75 cm inside, in brick work in cement mortar 1:4 (1 cement : 4 coarse sand) for sluice 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 75

Constructing masonry Chamber 90x90x100 cm inside, in brick work in cement mortar 1:4 (1 cement : 4 coarse sand) for sluice valve, with C.I. surface box 100 mm 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 20 mm 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 75

Providing and fixing C.I. double acting air valve ( confirming to latest I.S. specification) of approved quality with bolts, nuts, rubber insertions etc. complete : 100 mm dia

Constructing masonry Chamber size 0.60×0.60×1.20m with first class brick for Air valve/ Fire Hydrant with a floating coat of neat cement complete as per standard design with.Extra Heavy Duty Circular type 560mm internal dia Manhole cover with frame including supply of all material, labour T&P etc required for proper completion of work

Providing and fixing enclosed type water meter (bulk type) conforming to IS : 2373 and tested by Laboratory complete with bolts, nuts, rubber insertions etc. : 150 mm dia nominal bore

Cartage of following sizes of valves, lowering them into trenches and fixing the same on water supply line including cost of valves, specials labour T&P complete in all respect but excluding the cost of excavation and chamber, Fire Hydrant Valve IS 5290 (Latest Version) (Flanged) 100 mm diameter (Class II)

Nalla Crossing (0.60 mx0.45m) coming in the alignment of pipe line including supply of all material ,labour, T&P etc. complete as per direction of engineer in charge.

Provision for barricatng in two rows and necessary diversion of paths and where as necessary with the help of ballies, ropes, flags, signals and light signals etc. as per requirement including supply of all material T&P etc complete.

Disposal of road rubbish/malba/surplus earth/similar unserviceable, dismantled or waste materials by mechanical means, including loading, transporting, unloading to approved municipal dumping ground or as approved by Engineer-in-charge, beyond 50 m initial lead, for all leads including all lifts involved.

Dismantling and reinstatement of road surface for laying of pipe line including sorting out of serviceable materials and disposal of unserviceable materials.

Demolishing cement concrete manually/ by mechanical means including disposal of material within 50 metres lead as per direction of Engineer in charge. 1:3:6 or richer mix.

Taking out existing CC interlocking paver blocks from footpath/ central verge, including removal of rubbish etc., disposal of unserviceable material to the dumping ground and stacking of serviceable material within 50 metre lead as per direction of Engineer-in-Charge.

Dismantling of flexible pavement (bituminous courses) by mechanical means and disposal of dismantled material up to a lead of 1 kilometre, as per direction of Engineer-in-charge.

Demolishing dry brick pitching in floors, drains etc. including stacking serviceable material and disposal of unserviceable material within 50 metres lead :

Providing and laying in position cement concrete of specified grade excluding the cost of centring and shuttering - -All work upto plinth level 1:4:8 (1 Cement : 4 coarse sand : 8 graded stone aggregate 40 mm nominal size.

Providing and laying in position cement concrete of specified grade excluding the cost of centring and shuttering - -All work upto plinth level 1:2:4 (1 cement : 2 coarse sand : 4 graded stone aggregate 20 mm nominal size)

Dry brick pitching half brick thick in floors, drains etc. including supply of bricks and preparing the surface complete : F.P.S. bricks of class designation 75

Dry brick pitching half brick thick in floors, drains etc. with old bricks available at site and preparing the surface complete.

Temporary Laying old cement cocrete interlocking paver blocks (Tiles) on pipe line trenches laid in required line and level as per existing surface etc. including preparing of surface complete as per the direction of Engineer-in-charge. (Existing C.C. Interlocking tiles to be used)

Laying old cement cocrete interlocking paver blocks of any design/ shape laid in required line, level, curvature, colour and pattern over and including 50 mm thick compacted bed of coarse sand, filling the joints with fine sand etc. all complete as per the direction of Engineerin-charge. (Existing C.C. Interlocking tiles to be used)

Providing and laying 80mm thick factory made cement concrete interlocking paver block of M -30 grade made by block making machine with strong vibratory compaction, of approved size, design & shape, laid in required colour and pattern over and including 50mm thick compacted bed of coarse sand, filling the joints with fine sand etc. all complete as per the direction of Engineer-in-charge.

WBM Grading 1 Providing, laying, spreading and compacting stone aggregates of specific sizes to water bound macadam specification including spreading in uniform thickness, hand packing, rolling with three wheel 80-100 kN static roller in stages to proper grade and camber, applying and brooming, crushable screening to fill-up the interstices of coarse aggregate, watering and compacting to the required density Grading 1 as per Technical Specification Clause 405. By Manual Means

WBM Grading 2 Providing, laying, spreading and compacting stone aggregates of specific sizes to water bound macadam specification including spreading in uniform thickness, hand packing, rolling with three wheel 80-100 kN static roller in stages to proper grade and camber, applying and brooming, crushable screening to fill-up the interstices of coarse aggregate, watering and compacting to the required density Grading 2 as per Technical Specification Clause 405. By Manual Means

WBM Grading 3 Providing, laying, spreading and compacting stone aggregates of specific sizes to water bound macadam specification including spreading in uniform thickness, hand packing, rolling with three wheel 80-100 kN static roller in stages to proper grade and camber, applying and brooming, crushable screening to fill-up the interstices of coarse aggregate, watering and compacting to the required density Grading 3 as per Technical Specification Clause 405. By Manual Means

Providing and applying primer coat with bitumen emulsion (SS-1) on prepared surface of granular base including cleaning of road surface and spraying primer at the rate of 0.70-1.0 kg/sqm using mechanical means as per Technical Specification Clause 502

Dense graded bituminous macadam for grading I 37.5mm nominal size (bitumen @ 4.25% by weight of total mix

Bituminous Concrete for Grading - II-13.2 mm (Nominal Size) : Bitumen @ 5.4 % of the weight of total mix

Providing and applying tack coat with Bitumen emulsion (RS-1) using emulsion distributor at the rate of 0.25 to 0.30 kg per sqm on the prepared dry and hungry bituminous surface cleaned with Hydraulic broom as per Technical Specification Clause 503.

House Service Connection

Providing and fixing Brass Ferrule of pressure rating PN 10. Material to comply with IS 319 grade ½. Connection threading IS:554 BSPT , ISO:7-1

Providing and fixing Clamp saddles ( including drilling in D.I. Pipe) should be Non corrosive Engineering Plastic body moulded with Stainless steel threaded metal insert for tapping outlet. Clamp saddles for service connection from water distribution mains shall be of wrap around design, wide skirt and wide straps support, which shall reinforce the pipe while providing excellent stability to the saddle. Clamp Saddles for service connections shall be of fastened strap type with threaded (as per IS:554 Latest Version) female outlet of Stainless steel for service connection. The design of the saddle body should be such that, the service connection outlet metal insert shall project out towards pipe side and align with the hole drilled on the pipe to ensure positive locking against rocking or creeping on the pipe, as might be caused by vibration, pressure or excessive external loading. Saddle Seal shall be of virgin rubber SBR Grade 30 / NBR (NSF 61 approved). It shall be of type pressure activated hydro-mechanical design. It shall be contoured gasket to provide a positive initial seal which increases with increase in the line pressure. Saddle straps shall be made of plastic with or without metal reinforcement depending on size and injection molded to prevent galvanic corrosion over the long service life.Size- 80mm to 350mm

Providing and fixing 20mm dia PP Compression Metal Insert Female Thread Adaptor with SS304 material with BSP Threads as per ISO 14236 standard. Body, Nut / Cap –Polypropylene, Clip Ring-POM (Acetylic resin ),Packing bush- Polypropylene, “O” ring – NBR. Pressure rating will be PN 16.The Compression fittings for intended for conveyance of Potable water for Human consumption to be tested to comply with BS 6920 specifications in any of the NABL laboratories and certificate of compliance to be produced.

Providing and fixing 20mm dia Double Compression Elbow with Body, Nut / Cap –Polypropylene, Clip Ring-POM (Acetylic resin ),Packing bush- Polypropylene, “O” ring – NBR. Pressure rating will be PN 16.The Compression fittings for intended for conveyance of Potable water for Human consumption to be tested to comply with BS 6920 specifications in any of the NABL laboratories and certificate of compliance to be produced.

Providing and fixing MDPE PE 80 Blue Pipe PN 16 for 20mm dia. (Make- Duraline, Ashirwad, Astral, Oriplast, Jain Irrigation)

Providing and fixing 20mm dia UPVC Ball Valves, with compression- female threaded 20mm withBody, Nut / Cap –Polypropylene, Clip Ring-POM (Acetylic resin),Packing bush- Polypropylene, “O” ring – NBR. Pressure rating will be PN 16.The Compression fittings for intended for conveyance of Potable water for Human consumption to be tested to comply with BS 6920 specifications in any of the NABL laboratory and certificate of compliance to be produced

PUMP HOUSE, BOUNDARY WALL, APPROACH ROAD AND GATE

Excavation work by machanical means (Hydraulic excavator)/ manual means in foundation trenches or drains not exceeding 1.5 m in width or 10sqm. on plan including dressing of sides and ramming of bottoms lift upto 1.5m, including getting out the excavated earth and disposal of surplus excavated earth as directed, within a lead of 50m. All kinds of soil.

Providing and laying in position cement concrete of specified grade excluding the cost of centering and shuttering - All work up to plinth level 1:4:8 (1 Cement : 4 coarse sand : 8 graded stone aggregate of 40 mm nominal size).

Providing and laying in position cement concrete of specified grade excluding the cost of centering and shuttering - All work up to plinth level 1:1.5:3 (1 cement : 1.5 coarse sand : 3 graded stone aggregate of 20 mm nominal size)

Reinforced cement concrete work in walls (any thickness), including attached plasters, buttresses, plinth and string cources, fillets, columns, pillars, piers, abutments,posts and struts etc. upto floor five level excluding cost of centering, shuttering, finishing and reinforcement with 1:1.5:3 (1 cement : 1.5 coarse sand : 3 graded stone aggregate of 20 mm nominal size)

Centring and shuttering including strutting, ropping etc and removal of form for

Foundations, footings, bases for columns, etc. for mass concreate.

Columns, pillars, piers, abutments, posts and struts

Lintels, beams, plinth beams, girders, bressmers and cantilevers

Suspended floor & roof slab etc.

Reinforcement for R.C.C. work including straightening, cutting, bending placing in position and binding all complete. Reinforcement for R.C.C. Work Using Thermo-Mechanically Treated Bars.

Providing and laying damp-proof course 40mm thick with cement concrete 1:2:4 (1 cement : 2 coarse sand : 4 graded stone aggregate of 12.5mm nominal size).

Brick work with F.P.S. bricks of class designation 75 in foundation & plinth in 1:6(1 cement : 6 coarse sand)

Brick work with F.P.S. bricks of class designation 75 in superstructure above plinth level upto floor V level in all shapes and sizes in 1:6 (1 cement : 6 coarse sand)

12 mm thick cement plaster of mix 1:6 ((1 Cement : 6 fine sand)

12 mm thick cement plaster of mix 1:4 ((1 Cement : 4 fine sand)

Finishing walls with Premium Acrylic Smooth exterior paint with Silicone additives of required shade : New work (Two or more coats applied @ 1.43 ltr/ 10 sqm over and including priming coat of exterior primer applied @ 2.20 kg/ 10 sqm) (Make Asian, Berger, Nerolac etc.)

Finishing walls with water proofing cement paint of required shade: New work (Two or more coats applied @ 3.84 kg/10 sqm)

Distempering with oil bound washable distemper of approved brand and manufacture to give an even shade New work (two or more coats) over and including priming coat with cement primer. (Make Asian, Berger, Nerolac etc.)

Painting wood work with Deluxe Multi Surface Paint of required shade. Two or more coat applied @0.90 ltr/10 sqm over an under coat of primer applied @0.75 ltr/ 10 sqm. (Make Asian, Berger, Nerolac etc.)

Steel work welded in built up section/framed work including cutting, hoisting, fixing in position and applying a priming coat of approved steel primer using steel etc. as required. In gratings, frames, guard bar, ladder, railings, brackets, gates and similar works.

Supplying and filling in plinth with local sand including watering, ramming, consolidating and drassing complete in proposed water works.

Providing and laying integral cement based water proofing treatment including preparation of surface as required for treatment of roofs, balconies, terraces etc consisting of following operations: (a) Applying a slurry coat of neat cement using 2.75 kg/sqm. of cement admixed with water proofing compound conforming to IS. 2645 and approved by Engineer-in-charge over the RCC slab including adjoining walls upto 300mm height including cleaning the surface before treatment. (b) Laying brick bats with mortar using broken bricks/brick bats 25 mm to 115mm size with 50% of cement mortar 1:5 (1 cement : 5 coarse sand) admixed with water proofing compound conforming to IS : 2645 and approved by Engineer-in-charge over 20 mm thick layer of cement mortar of mix 1:5 (1 cement :5 coarse sand ) admixed with water proofing compound conforming to IS : 2645 and approved by Engineer-in-charge to required slope and treating similarly the adjoining walls upto 300 mm height including rounding of junctions of walls and slabs (c) After two days of proper curing applying a second coat of cement slurry using 2.75kg/ sqm of cement admixed with water proofing compound conforming to IS : 2645 and approved by Engineer-in-charge. (d) Finishing the surface with 20 mm thick jointless cement mortar of mix 1:4 (1 cement :4 coarse sand) admixed with water proofing compound conforming to IS : 2645 and approved by Engineer-in-charge including laying glass fibre cloth of approved quality in top layer of plaster and finally finishing the surface with trowel with neat cement slurry and making pattern of 300x300 mm square 3mm deep. (e) The whole terrace so finished shall be for final test. All above operations to be done in order and as directed and specified by the Engineer-in-Charge : With average thickness of 120mm and minimum thickness at khurra as 65 mm mm square 3mm deep. (f) The whole terrace so finished shall be flooded with water for a minimum period of two weeks for curing and for final test.

Cement concrete flooring 1:2:4 (1 cement: 2 coarse sand : 4 graded stone aggregate) finished with a floating coat of neat cement including cement slurry, but excluding the cost of nosing of steps etc. complete. 40mm thick with 20mm nominal size stone aggregate.

Providing and fixing T-iron frames for doors, windows and ventilators of mild steel Tee-sections, joints mitred and welded with 15x3 mm lugs 10cm long embedded in cement concrete blocks 15x10x10 cm of 1:3:6 (1 cement : 3 coarse sand : 6 graded stone aggregate of 20 mm nominal size) or with wooden plugs and screws or rawl plugs and screws or with dash fastener or with fixing clips or with bolts and nuts as require including fixing of necessary butt hinges and screws and applying a priming coat of approved steel primer (Make Asian, Berger, Nerolac etc.). (Rolled Steel Joist 200mm×100mm size)

Providing and fixing on wall face unplasticised Rigid PVC rain water pipes conforming to IS : 13592 Type A, including jointing with seal ring conforming to IS : 5382, leaving 10 mm gap for thermal expansion, (i) Single socketed pipes. 110 mm outer diameter

Treatment of earth under Proposed existing floors using chemical emulsion @ one liter per hole, 300 mm apart including drilling 12 mm diameter holes and plugging with cement (1 cement : 2 Coarse sand) to match the existing floor :mortar 1 :2 With Chlorpyriphos/Lindane E.C. 20% with 1% concentration

Dry brick pitching half brick thick in floors, drains etc. including supply of bricks and preparing the surface complete : With common burnt clay F.P.S. (non modular) bricks of class designation 7.5

Renewing glass panes, with putty and nails wherever necessary including racking out the old putty:Float glass panes of thickness 4 mm

INTERNAL ELECTRIFICATION OF PUMP HOUSE

Wiring for light point/ fan point/ exhaust fan point/ call bell point with 1.5 sq.mm FRLS PVC insulated copper conductor single core cable in surface / recessed medium class PVC conduit, with piano type switch, phenolic laminated sheet, suitable size M.S. box and earthing the point with 1.5 sq.mm FRLS PVC insulated copper conductor single core cable etc. as required.

Supplying and fixing metal box of 150mm X 75mm X 60mm deep (nominal size) on surface or in recess with suitable size of phenolic laminated sheet cover in front including providing and fixing 3 pin 5/6 amps socket outlet and 5/6 amps piano type switch, connection, painting etc. as required. (For light plugs to be used in non residential buildings).

Wiring for circuit/ submain wiring alongwith earth wire with the following sizes of FRLS PVC insulated copper conductor, single core cable in surface/ recessed medium class PVC conduit as required.

2 X 4 sq. mm + 1 X 4 sq. mm earth wire

2 X 1.5 sq. mm + 1 X 1.5 sq. mm earth wire

Supplying and fixing 5 amps to 32 amps rating, 240/415 volts, "C" curve, miniature circuit breaker suitable for inductive load of following poles in the existing MCB DB complete with connections, testing and commissioning etc. as required. Single Pole

Supplying and fixing following rating, double pole, 240 volts, isolator in the existing MCB DB complete with connections, testing and commissioning etc. as required. 40 amps

Supplying and fixing following way, single pole and neutral, sheet steel, MCB distribution board, 240 volts, on surface/ recess, complete with tinned copper bus bar, neutral bus bar, earth bar, din bar, interconnections, powder painted including earthing etc. as required. (But without MCB/RCCB/Isolator) 2 + 4 way, Double door

Supplying and fixing 20 A, 240 V, SPN Industrial type socket outlet, with 2 pole and earth, metal enclosed plug top alongwith 20 A, “C” curve, SP, MCB, in sheet steel enclosure, on surface or in recess, with chained metal cover for the socket out let and complete with connections, testing and commissioning etc. as required.

S/F of 1200mm long box type florescent tube light fitting suitable for 1*40 watt complete etc. (Cat-A) Philips etc.

Supplying and fixing stepped type electronic fan regulator on the existing modular plate switch box including connections but excluding modular plate etc. as required.

S/F of ceiling fan complete in all respects.

S/F of 150watt sodium lamp street light with bracket & clamps complete in all respect.

S/F of Bulk Head fitting complete in all respect.

S. M. Construction

O.P. Gupta Constructions Pvt Ltd