GAIL India Limited Tender

Clearing Jungle including uprooting of rank vegetation, grass, brush wood, trees and saplings of girth up to 30 cm measured at a height of 1 m above ground level and removal of rubbish at the designated places inside plant premises, as directed by Engineer-incharge

Disposal of building rubbish / malba / similar unserviceable, dismantled or waste materials by mechanical means, including loading, transporting, unloading to a dump yard or relevant disposal facility outside plant area & MSEZ as per directions of Engineer-in- Charge, beyond 50 m initial lead including all lifts involved.

Demolishing R.C.C./cement concrete of any mix (i/c equivalent design mix)/brick work in cement mortar manually/ by mechanical means including stacking of servicable material and disposal of unserviceable material at designated places within plant premises as directed by Engineer-incharge.

Filling available excavated earth from nearby borrowpits anywhere from the plant premises (excluding rock) in trenches, plinth, sides of foundations etc. in layers not exceeding 20cm in depth: consolidating and compacting each deposited layer by ramming and watering to acheive 95% dry density, lead up to 50m and lift upto 1.5 m

Supplying and filling in plinth with sand under floors or wherever required including, watering, ramming consolidating and dressing complete.

Supplying, filling, spreading & compacting stone boulders of size range 50mm to 200 mm, in requried thickness for all leads and lifts, all complete, as directed by the EIC

Providing and laying in position cement concrete of specified grade excluding the cost of centering and shuttering- All works, upto plinth level, etc.1:4:8 (1 cement: 4 Coarse sand: 8 graded stone aggregate 40mm nominal size)

Providing and laying in position cement concrete of specified grade excluding the cost of centering and shuttering- All works, upto plinth level, etc. 1:2:4 (1 cement : 2 coarse sand (zone-III) derived from natural sources : 4 graded stone aggregate 20 mm nominal size derived from natural sources)

Providing and laying cement concrete in retaining walls, return walls, walls (any thickness) including attached plasters, columns, piers, abutments, pillars, posts, struts, buttresses, string or lacing courses, parapets, coping, bed blocks, anchor blocks, plain window sills, fillets, sunken floor etc., up to floor five level (superstructure), excluding the cost of centering,shuttering and finishing : 1:2:4 (1 Cement : 2 coarse sand (zone-III) derived from natural sources : 4 graded stone aggregate 20 mm nominal size derived from natural sources)

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

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

Construction of dry lean cement concrete sub base over a prepared sub-grade with coarse and fine aggregate conforming to IS:383, the size of coarse aggregate not exceeding 25 mm, aggregate cement ratio not to exceed 15:1, aggregate gradation after blending to be as per specifications, cement content not to be less than 150 Kg/cum, optimum moisture content to be determined during trial length construction, concrete strength not to be less than 10 Mpa at 7 days, mixed in a batching plant, transported to site, for all leads & lifts, laid with a mechanical paver, compacting with 8-10 tonne vibratory roller, finishing and curing etc. complete as per direction of Engineer in-charge

Providing and laying in position ready mixed or site batched design mix cement concrete for reinforced cement concrete work; using coarse aggregate and fine aggregate derived from natural sources, Portland Pozzolana / Ordinary Portland /Portland Slag cement, admixtures in recommended proportions as per IS: 9103 to accelerate / retard setting of concrete, to improve durability and workability without impairing strength; including pumping of concrete to site of laying, curing, carriage for all leads; but excluding the cost of centering, shuttering, finishing and reinforcement as per direction of the engineer-in-charge; for the following grades of concrete. Note: Extra cement up to 10% of the minimum specified cement content in design mix shall be payable separately. In case the cement content in design mix is more than 110% of the specified minimum cement content, the contractor shall have discretion to either re-design the mix or bear the cost of extra cement. Concrete of M30 grade with minimum cement content of 350 kg /cum

Providing and laying in position ready mixed or site batched design mix cement concrete for reinforced cement concrete work; using coarse aggregate and fine aggregate derived from natural sources, Portland Pozzolana / Ordinary Portland /Portland Slag cement, admixtures in recommended proportions as per IS: 9103 to accelerate / retard setting of concrete, to improve durability and workability without impairing strength; including pumping of concrete to site of laying, curing, carriage for all leads; but excluding the cost of centering, shuttering, finishing and reinforcement as per direction of the engineer-in-charge; for the following grades of concrete. Note: Extra cement up to 10% of the minimum specified cement content in design mix shall be payable separately. In case the cement content in design mix is more than 110% of the specified minimum cement content, the contractor shall have discretion to either re-design the mix or bear the cost of extra cement. Concrete of M35 grade with minimum cement content of 370 kg /cum

Centering and shuttering including strutting, propping etc. and removal of form for: Foundation, footings, bases of columns, plinth beam etc. up to plinth level all complete.

Centering and shuttering including strutting, propping etc. and removal of form for: Retaining walls, return walls, walls (any thickness) includng attached pilasters, buttresses, plinth and string course fillets, kerbs and steps, columns, piers, abutments, pillars, posts, struts and all the works above plinth level

Supplying and laying reinforcement at all levels for R.C.C. work including straightening, cutting, bending, placing in position, connecting to the existing reinforcement and binding all complete with Thermo-Mechanically Treated bars of grade Fe-500D or more

Steel work welded/riveted/bolted in built up section / single section / framed work/trusses including cutting, hoisting, fixing in position and applying a priming coat of approved steel primer, at all heights as per direction of EIC.

Steel work in built up tubular (round, square or rectangular hollow tubes etc.) trusses etc., including cutting, hoisting, welding, fixing in position and applying a priming coat of approved steel primer, including welding and bolted with special shaped washers etc. complete. Hot finished welded type tubes

Steel work welded in built up sections/ framed work, including cutting, hoisting, welding, fixing in position and applying a priming coat of approved steel primer using structural steel etc. as required. in stringers, treads, landings etc. of stair cases, including use of chequered plate wherever required, gratings, frames, guard bar, ladder, handrails, brackets, gates and similar works, all complete

Providing and fixing bolts above 300mm in length incluidng nuts and washers complete.

Finishing with Epoxy paint (two or more coats) at any type of surface, including concrete, steel, rebars and all locations prepared and applied as per manufacturer's specifications including appropriate priming coat, preparation of surface, etc. complete.

Providing and applying Non-shrink grout (CNS 50) or as approved (prepared as per manufacture's recommendation) for grouting of bolts, filling up of pockets etc. in concrete / RCC works as per site requirement, all complete.

Providing and fixing and dismantling the double scaffolding system (cup lock type) on the exposed sides of the water tanks and the structure, above ground level, including additional rows of scaffolding in stepped manner as per requirement of site, made with 40mm dia M.S. tube, placed 1.5 metre centre to centre, horizontal & vertical tubes joint with cup & lock system with M.S. Tubes, M.S. tube challis, M.S. clamps and staircase system in the scaffolding for working platform, safety net etc. and maintaining it in a serviceable condition for execution of work of cleaning and/ or pointing and/ or applying chemical and removing it thereafter. The scaffolding system shall be stiffened with bracings, runners, connecting with the building etc, wherever required, if feasible, for inspection of work at required locations with essential safety features for the workmen etc., complete as per directions and approval of Engineer-in- charge and F&S department of GMPL. Note:- (1) The elevational area of the scaffolding shall be measured for payment purpose. (2) The payment will be made once only for execution of all items for such works.(3) The payment will be made only once for all the works at one area, on actually fixing the scaffolding at site as per the approval of Engineer-in- charge and F&S department of GMPL

Treatmemt of Expansion Joints

Cleaning the expansion Joints, Providing and laying expansion joint system for 50mm width, on the inside RCC walls and Raft Floor as per the technical specifcations and manufacturer's methodology: The surface on the exposed side of the joint and inside the joint shall be cleaned thoroughly to remove the existing boards and sealants, all loose particles, oil, dirt etc by mechanical grinding. Any uneven projections shall be grinded and levelled. Damaged edges along the length of the joints shall be prepared with Polymer Modified Mortar & free flow micro concrete. Fix masking tape on both sides 40 -50 mm away from the joint to provide a neat edge. Supreme HD100 board or equivalent shall be cut into the required depth and shall be pushed inside the expansion joint gap. The Backer rod of suitable dia shall be placed into the expansion joint leaving space for polysulphide sealant. One coat of sealant primer shall be applied on the sides of the expansion joint. Sika poly sulphide gun grade sealant or equivalent shall be mixed as per manufacturer specifications and applied into the expansion joint groove and finished smoothly. The sealant shall be allowed to set for 24 hours. Apply Sikadur Combiflex Tape adhesive or equivalent on the prepared surface for a thickness of 2 mm on sides of the joint. The adhesive shall be extended 5 mm from the edge of the strip. Sikadur Combiflex Tape or equivalent shall be firmly fixed to the applied adhesive with the divider tape facing up. The divider tape shall be aligned in line of the expansion joint. Apply Sikadur Combiflex Tape adhesive or equivalent over the Sikadur Combiflex Tape or equivalent to a thickness of 2 mm as an over-coating and remove the divider tape immediately. The sika Dur combi flex or equivalent shall be allowed to cure for 24 hours. Protecting the treated joints during surface treatments. After the application of surface treatments and Epoxy lining, Providing and again applying the Gun grade poly sulphide sealant on the finished epoxy lined joints up to 25mm depth after filling the gap using a baker rod below the sealant. The payment includes all the materials involved in the aforementioned procedure including disposal of the old materials at the designated locations inside GMPL plant, labour, tools, scaffolding, plants as approved by the Engineer-in-charge etc. The payment shall be done to the expansaion joint length where all the above procedure is executed by the authorised applicator of the approved make and the application procedure is followed as per the approved make manufacturer's specifications

Cleaning the expansion Joints, Providing and laying expansion joint system for 50mm width, on the outside RCC walls as per the technical specifcations and manufacturer's methodology: The surface on the exposed side of the joint and inside the joint shall be cleaned thoroughly to remove the existing board and sealants, all loose particles, oil, dirt etc by mechanical grinding. Any uneven projections shall be grinded and levelled. Damaged edges along the length of the joints shall be prepared with Polymer Modified Mortar & free flow micro concrete. Fix masking tape on both sides 40 -50 mm away from the joint to provide a neat edge. Supreme HD100 board or equivalent which is already laid thorugh the internal wall side, shall be checked for the required depth leaving gap polysulphide sealant. If required, the board shall be till requried depth. The Backer rod of suitable dia shall be placed into the expansion joint leaving space for polysulphide sealant. One coat of sealant primer shall be applied on the sides of the expansion joint. Sika poly sulphide gun grade sealant or equivalent shall be mixed as per manufacturer specifications and applied into the expansion joint groove and finished smoothly. The sealant shall be allowed to set for 24 hours including protecting the treated joints during surface treatments. The payment includes all the materials involved in the aforementioned procedure including disposal of the old materials at the designated locations inside GMPL plant, labour, tools, scaffolding, plants as approved by the Engineer-in-charge etc. The payment shall be done to the expansaion joint length where all the above procedure is executed by the authorised applicator of the approved make and the application procedure is followed as per the approved make manufacturer's specifications

Treatment of Cracks in the External and Internal Walls

Providing and inserting non-removable injection packers along the cracks, after drilling holes of 12 mm dia upto 75-100 mm deep for grouting as per technical specifications including necessary surface preparation, U groove cutting along the crack, cleaning the crack with air and water jet and sealing the cracks with epoxy putty all complete as per the instruction of the Engineer in charge. The payment shall be made for the number of holes/anchor grout locations along the cracks as per technical specifications. The payment includes all the materials, labour, tools, scaffolding, plants as approved by the Engineer-in-charge etc.

Supplying and applying two parts (resin and hardener) super low viscous Epoxy Resin crack injection grout into cracks/honeycomb area using high pressure electrically operated injection equipment, for RCC walls as per manufacturer’s specifications & the instructions of the engineer in charge. The payment shall be made for the number of holes/anchor grout locations along the cracks as per technical specifications. The payment includes all the materials, labour, tools, scaffolding, plants as approved by the Engineer-in-charge etc.

Treatment for Internal Walls

Chipping/Hacking the loose concrete, removal of existing coating upto 5 mm thickness by cutting and grinding/scarification of the entire surface until a sound concrete substrate which is free of latent, glaze, efflorescence and in-compactable concrete, is reached, without damaging the mother slab. The unsound concrete should be preferably cut with a diamond-tipped cutter and the same shall be removed with a light mechanical hammer or chisel and removing the dust, oil and grease, necessary repairs of cracks, etc. as per site conditions and requirements, all complete as per manufacturer's specifications and directions of EIC. if any reinforcement steel is exposed, it should be cleaned with by wire brush to remove the dust and rust. Finally, cleaning the entire concrete and rebar surface with a jet of water under pressure etc. Application of anti-corrosive zinc-rich primer over the exposed steel reinforcement wherever required complete as per the technical specifcations and the instruction of the Engineer in charge. The payment includes all the materials involved in the aforementioned procedure, labour, tools, scaffolding, plants as approved by the Engineer-in-charge etc. Payment shall be made according to surface preparation area for which the above operations are followed and is inclusive of scaffolding charges.

Providing and fixing of Shear Connector of minimum 100 mm long reinforcement at spacing 500 mm c/c as per drawings and technical specifications after drilling holes upto a depth of 75 mm to 100 mm and cleaning the hole to remove dust, and loose particles using air and water jet. Fixing shear connectors using reinforcement rebar in the drilled holes using polyester resin anchor grout in the RCC walls as per the technical specifications, including tack welding to the steel reinforcement, painting the reinforcement with epoxy paint etc., complete as per the directions of the engineer-in-charge. Note: Reinforcement steel is measured and paid separately. The payment includes all the materials involved in the aforementioned procedure, labour, tools, scaffolding, plants as approved by the Engineer-in-charge etc. Payment shall be made according to surface preparation area for which the above operations are followed and is inclusive of scaffolding charges.

Supply and application of two parts solvent free epoxy bonding agent in one or more coats, over the existing concrete surface, to receive new concrete at 0.5 Kg/sqm. the bonding agent should remain tacky consistency after the application for a minimum period of 2-3 hour at 30 degree celsius. The payment includes all the materials involved in the aforementioned procedure, labour, tools, scaffolding, plants as approved by the Engineer-in-charge etc. Payment shall be made according to application area for which the above operations are followed as per technical specifications and is inclusive of scaffolding charges.

Shortcreting concrete surface with a mix of 1:2:2 (cement: fine aggregate: coarse aggregate 6mm down), silica fumes at 5-6% weight of cement, 125 grams of polypropylene fibre per bag of cement applied with electrically operated compressor equipment as per technical specifications, after cleaning the surface and spraying up to 40 mm thick concrete on the RCC walls, within 45 mins of application of Epoxy resin bonding agent. The payment includes all the materials involved in the aforementioned procedure, labour, tools, scaffolding, plants as approved by the Engineer-in-charge etc. Payment shall be made only after proper wet curing has been done and the surface has been satisfactorily evaluated by sounding/tapping with a blunt metal instrument. The payment shall be made according to the application area for which the above operations are followed and is inclusive of concrete wastage and scaffolding charges and no extra payment shall be made.

Providing, mixing and applying Ready To Use Polymer (of approved make) modified cement mortar of thickness 20 mm with neat finish coat, mixed with water as per manufacturer's spefications, Technical specifications and directions of Engineer-in-charge. Note: For payment purpose, pre-measurement of thickness shall be done just after the surface preparation is complete including all materials, labour, tools, scaffolding, plants as approved by Engineer-in-charge etc. complete. (Acceptable products of SBR : Pidilite, SIKA, FOSROC or equivelent): 20mm thickness with neat finish coat

Providing and Applying minimum 1 mm thick Chemical Resistant Xolutech technology based Protective Coating on concrete surface: Surface Preparation: Prepare the surface by manual/mechanical means, with high pressure water jetting to ensure the removal of loose & laitance particles, oil, greese, dust substance which may impair the adhesion of subsequent coating and even out any imperfections, sharp protrusions on the application surface by filling the voids, blowholes, minor irregularities and other surface defects and prepare a sound, dry, smooth surface as per manufacturer's specifications. Primer for concrete substrates: Providing and applying two component primer based on Xolutech - Technology such as MasterSeal P 770 or equivalent over the prepared concrete substrates with a coverage of minimum 0.25-0.30 Kg/Sq.m depending on the substrate condition in on or more coats by brush or roller and allowed to cure for 5 hours as per manufacturer's specifications. Top coat: Providing and applying, elastometric high chemical resistant coating which is solvent free, crack bridging coating based on Xolutec - Technology such as MasterSeal M 790 or equivalent, applied using roller or spray in minimum three or more coats at an average consumption of 0.4 Kg/Sq.m./Coat with a re-coating interval of 8 hours at 20 deg.C, to achieve a total average DFT of minimum 1 mm including the primer coat, as per manufacturer's specifications. Recoating with M790 or equivalent shall be carried out wherever 1 mm DFT is not acheived. The payment includes all the materials involved in the aforementioned procedure, labour, tools, scaffolding, plants as approved by the Engineer-in-charge etc. Payment shall be made according to application area for which the above operations are followed and is inclusive of all the charges.

Treatment for External Wall

Chipping/Hacking the loose concrete, preparation of the entire surface until a sound concrete substrate, which is free of latent, glaze, efflorescence, algae, vegetations and in-compactable concrete, is reached, without damaging the mother slab. The unsound concrete should be preferably cut with a diamond-tipped cutter and the same shall be removed with a light mechanical hammer or chisel and removing the dust, oil and grease, necessary repairs of cracks, etc. as per site conditions and requirements, all complete as per manufacturer's specifications and directions of EIC. if any reinforcement steel is exposed, it should be cleaned with by wire brush to remove the dust and rust. Finally, cleaning the entire concrete and rebar surface with a jet of water under pressure etc. Application of anti-corrosive zinc-rich primer over the exposed steel reinforcement wherever required complete as per the technical specifcations and the instruction of the Engineer in charge. The payment includes all the materials involved in the aforementioned procedure, labour, tools, scaffolding, plants as approved by the Engineer-in-charge etc. Payment shall be made according to surface preparation area for which the above operations are followed and is inclusive of scaffolding charges.

Providing, mixing and applying a SBR based cementitious bonding coat of 1.5 cement : 1 Pidicrete URP or approved equivalent constructions chemical to the existing dismantled / cleaned surface as per specifications and direction of EIC. The coverage area of the bonding coat shall be strictly followed as per manufacturer's specifcations. The payment includes all the materials involved in the aforementioned procedure, labour, tools, scaffolding, plants as approved by the Engineer-in-charge etc. Payment shall be made according to surface preparation area for which the above operations are followed and is inclusive of scaffolding charges.

Providing, mixing and applying SBR polymer (of approved make) modified cement mortar in the form of readymade structural grade repair mortar or in proportion of 1:4 (1 cement: 4 graded coarse sand with polymer minimum 15% by wt. of cement used) as per specifications and directions of Engineer-in-charge. Wherever PMM thickness exceeds 20 mm, a layer of weld mesh 50 x 50 x 3 mm shall be fixed to the concrete using nails. Note: For payment purposes, pre-measurement of thickness shall be done just after the surface preparation is complete The payment is including all materials including mesh, labour, tools, scaffolding, plants as approved by Engineer-in-charge etc. complete. : 12mm to 25mm thickness

Providing and applying waterproof plaster of 20mm thick 1:4(cement:fine aggregate) by adding waterproofing admixture, silica fumes at 5% weight of cement, 125 grams of polypropylene fibre per 50 kg of cement over the concrete surfaces, with waterproof plaster having specified minimum characteristic compressive strength as per IS : 2645 : 2003 and the technical specifications. The payment includes all the materials involved in the aforementioned procedure, labour, tools, scaffolding, plants as approved by the Engineer-in-charge etc. Payment shall be made according to the application area for which the above operations are followed and is inclusive of scaffolding charges

Providing & applying acrylic anti-carbonation coating in 2 coats or more of minimum DFT of 200 microns, after the necessary surface preparation, repairing cracks with epoxy grout or crack filler paste as directed by the EIC, and primer coat application of approved make and quality. The payment shall be done to the area where the application procedure is followed as per the approved make manufacturer's specifications

Treatment for Raft Floor

Providing and laying in position M25 grade ready mixed or site batched design mix cement concrete mixed with waterproof plasticizer and polypropylene fibers, as the technical specifications, for reinforced cement concrete work; using coarse aggregate and fine aggregate derived from natural sources, Portland Pozzolana / Ordinary Portland /Portland Slag cement, admixtures in recommended proportions as per IS: 9103 to accelerate / retard setting of concrete, to improve durability and workability without impairing strength; including pumping of concrete to site of laying, curing, carriage for all leads; but excluding the cost of centering, shuttering, finishing and reinforcement as per direction of the engineer-in-charge; for the M25 grade of concrete with minimum cement content of 330 kg/cum. All works up to plinth level. The payment includes all the materials involved in the aforementioned procedure, labour, tools, scaffolding, plants as approved by the Engineer-in-charge etc.

Supply of Poly propylene construction micro fibers to be mixed with concrete mix, of required cut length and effective diameter, directed by the EIC and technical specifications

Providing and Fixing Injection ports/nozzles in staggered manner on the preapared honeycombed concrete areas at @ 500mm spacing after drilling holes upto minimum 200 depth, to facilitate injecting grout, and fill the surrounding groove of holes using Polymer Modified Mortar or Renderoc Plug or equivalent and carrying out injection/pressure grouting using slurry cement in prefixed nozzles/ports, mixed with Micro fine cementations compound cebex 100 or equivalent at a dosage of 225 gram/50 Kg of cement and adding water as per manufacturer's specifications. The grouting shall be executed till no further grout is accepted by ports using grout pump etc. complete. The payment includes all the materials involved in the aforementioned procedure, labour, tools, scaffolding, plants as approved by the Engineer-in-charge etc. Payment shall be made according to the no of 50 Kg bags of cement used. EA = per 50Kg cement

Fixing the sluice gates along with all the required accessrories, at the existing concrete surface opening of 1 - 2.5 Sqm, after transporting it from anywhere inside the plant, to the required location, preparing the concrete surface for the installation of the sluice gate as per the site requirements, fixing with Chemical/Mechanical Heavy Duty Epoxy Injection Anchor bolts of Hilti or equivalant, as per the technical specifications of the manufacturer & directions of the EIC. Providing slots/core cutting in concrete surfaces wherever required for the head stock, gate frame and base plate fixing using anchor bolts. Installation drawings & Fixing methodology shall be submitted by the contractor. The payment includes supply and fixing all the required accesssories, anchor bolts, all the consumables, materials, drawings involved in the aforementioned procedure, labour, tools, fuel, crane for fixing sluice gate, scaffolding, plants as approved by the Engineer-in-charge etc.

Providing Electricity through portable Diesel Generator of required rating, running capacity, including cables, systems, panels for distribution of power, poles, and all the required electrical accessories, arrangements, for the installation of the sluice gates at the designated openings as directed by the EIC. The payment includes all the Power supply, and all the accessories required to supply the power for the installation of the sluice gate, as approved by the EIC. No payment shall be made extra pertaining to the power requirement for the installation of the sluice gates.

Providing 12 mm cement plaster of mix: 1:6 (1 cement : 6 coarse sand)

Providing 20 mm cement plaster of mix: 1:6 (1 cement : 6 coarse sand)

Providing and laying Autoclaved Aerated Concrete (AAC) blockss masonry 100 mm/125 mm thick with Grade-1 AAC blocks of density 551 to 650 kg/cum conforming to IS:2185 (Part:3) in super structure above plinth level upto floor V level in cement mortar 1:4 (1 cement: 4 coarse sand). The rate includes providing and placing in position 2 Nos 6 mm dia MS bars at every third coarse of masonry work.

Providing and placing in position 100 mm thick factory made machine batched & machine mixed Precast RCC Rectangular Covers on openings of various sizes, of M-25 grade cement concrete for RCC work, including cost of centering, shuttering, reinforcement of 8 mm dia TMT bars of Fe 500 grade @ maximum 100mm c/c on both ways , neat cement punning on finished surface, properly encased on all edges with 1.6 mm thick , 100 mm wide MS sheet duly painted over priming coat , reinforcement to be welded at edges with MS sheet and providing 2 Nos. 12 mm dia bar for hooks etc i/c cost of cartage, all leads & lift, handling at site etc. all complete as per direction of Engineer-in-Charge.

Providing and laying superior quality dressed laterite stone masonry at all levels in cement mortar 1:6 , as per IS 3620(1979), having compressive strength not less than 3.5 Mpa for saturated dry samples, size as directed by the EIC

Supply & Fixing Pre-painted Trapezoidal profiled sheeting 1000-1020 mm cover width, 28 -30 mm high crests manufactured out of 0.50 mm TCT hi-tensile pre-painted Zincalume /Galvalume steel (AZ-150 gsm. Aluminium –Zinc alloy metallic coating of total both sides 550 Mpa yield stress as per AS-1397). Exterior coat of SMP (Silicon Modified Polyester) / BHP XRW paint system, 20 micron top coat applied over 5 micron primer and a 5 micron polyester back coat applied over 5 microns primer OR equivalent coating/painting. The sheet shall have wide pans with stiffening ribs for effective water shedding and special male/female ends with full return legs on side laps for purlin support. The male end of the sheet shall have anti-capillary flute at side laps to prevent leakages. The sheet shall be fixed by means of Galvanised self-drilling self tapping fasteners (12-14x55 with EPDM seals). The sheet shall be supplied in lengths maximum upto 6-12 Mtrs long to suit site dimensions. The work is to be carried out directly as per specifications and direction of EIC and the manufacturer and in the colour as directed by the EIC - 0.50 mm thick TCT (Total Coated Thickness) precoated sheet of make "TATA BlueScope", "Lloyd", "Jindal" , Interarch or equivalent confirming with minimum tensile strength 550 Mpa confirming AS : 1397

Providing and fixing UPVC gutter pipe of 200 mm width fitted with UPVC support saddles fitted to the edge of galvalume roofing sheets with proper slope towards the downtake pipe to facilitate easy flow of rain water including he cost of all materials, labours, transportation, etc all complete

Supply and operation of JCB for desilting , excavation, drain cleaning , dressing and other misc. works on hourly basis including the cost of fuel, operator, helper etc. as per requirement of GAIL and instruction of EIC

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