Waterproofing work and Installation of Structural Shed work at 640 seater hostel at IIT Goa

Centering and shuttering including strutting, propping etc, and removal of form for i) Columns, Pillars, Piers, Abutments, Posts and Struts

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 Pozzolona/ Ordinary Portland/ Portland Slag cement, admixture in recommended proportions as per IS:9103 to acceralte/ 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 upto 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 of bear the cost of extra cement. i) All works above plinth level upto floor V level - Concrete of M30 grade with minimum cement content of 350 kg/cum

Structural steel work in single section, fixed with or without connecting plate, including cutting, hoisting, fixing in position and applying a priming coat of approved steel primer all complete.

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

Providing and fixing bolts including nuts and washers complete

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 diameter)

Providing and fixing unplasticised- PVC pipe clips of approved design to unplasticised- PVC rain water pipes by means of 50x50x50 mm hard wood plugs, screwed with M.S screws of reqiured length, including cutting brickwork and fixing in cement mortar 1:4 (1 cement : 4 coarse sand) and making good the wall etc. complete i) 110 mm

Providing and fixing to the inlet mouth of rain water pipe cast iron grating 15 cm diameter and weighing not less than 440 gms

Painting with synthetic enamel paint of approved brand and manufacture to give an even shade : i) Two or more coats on new work

Demolishing R.C.C work by mechanical means and stockpiling at designated locations and disposal of dismantled materials up to lead of 1 kilometre, stacking servicable and unservicable material separately including cutting reinforcement bars

Providing and fixing premium Aluminium-Zinc colour coated steel (galvalume) profile sheets (size, shape and pitch of corrugation as approved by Engineer-in-charge) 0.50 mm (+ 0.05 %), total coated thickness with zinc coating 150 grams per sqm as per IS: 277, in 550 mpa steel grade, 5-7 microns acrylic coating (Hexavalent / Trivalent) on both side of the sheet and polyester top coat 15-18 microns. Sheet should have protective guard film of 25 microns minimum to avoid scratches during transportation and should be supplied in single length upto 12 metre or as desired by Engineer-in-charge. The sheet shall be fixed using self drilling /self tapping screws of size (5.5x 55 mm) with EPDM seal, complete upto any pitch in horizontal/ vertical or curved surfaces, excluding the cost of purlins, rafters and trusses and including cutting to size and shape wherever required.

Providing and fixing uPVC Gutter of aquastar Excel or equivalent of base width 220mm of weight not less than 1.3kg/ metre and capacity of 20 litre per minute including fixing brackets of steel or G.I. The outer side Gutter shall be 50-60mm height to prevent overflow during heavy rain and extra beading are provided on the sides to ensure strength and durability. The accessories like runner drop and stop ends etc. shall be sealed with silicon all complete as per manufactural specification and as per the direction of Engineer-In-Charge. (Fittings paid separately)

Providing and fixing fittings/ accessories for UPVC Gutter of aquastar Excel or equivalent including jointing with seal ring/ silicon etc complete as per manufacturer specification and standards etc all complete as per the direction of Engineer-In-Charge. (Fittings shall be paid separately) i) Runner Drop: 220mm /8''

Providing and fixing fittings/ accessories for UPVC Gutter of aquastar Excel or equivalent including jointing with seal ring/ silicon etc complete as per manufacturer specification and standards etc all complete as per the direction of Engineer-In-Charge. i) Inner Elbow Main

Providing and fixing fittings/ accessories for UPVC Gutter of aquastar Excel or equivalent including jointing with seal ring/ silicon etc complete as per manufacturer specification and standards etc all complete as per the direction of Engineer-In-Charge. i) Stop End

Providing and fixing fittings/ accessories for UPVC Gutter of aquastar Excel or equivalent including jointing with seal ring/ silicon etc complete as per manufacturer specification and standards etc all complete as per the direction of Engineer-In-Charge. i) Stop End Drop

Providing and fixing premium Aluminium-Zinc colour coated steel (galvalume) sheet roofing accessories 0.50mm (+0.05%) total coated thickness, Zinc coating 150 grams per sqm as per IS:277, in 550 mpa steel grade, 5-7 microns acrylic coating (Hexavalent/ Trivalent) on both side of the sheet and polyester top coat 15-18 microns using self drilling/ self tapping screws complete: i) Ridges Plain (500-600mm)

Providing and fixing premium Aluminium-Zinc colour coated steel (galvalume) sheet roofing accessories 0.50mm (+0.05%) total coated thickness, Zinc coating 150 grams per sqm as per IS:277, in 550 mpa steel grade, 5-7 microns acrylic coating (Hexavalent/ Trivalent) on both side of the sheet and polyester top coat 15-18 microns using self drilling/ self tapping screws complete: i) Valley

Providing and fixing the expansion joint system related with wall joint (internal/ external) location as per drawings and direction of Engineer-In-Charge. The joints shall be of extruded aluminium base members, self aligning/ centering arrangement and support plates as per ASTM B221-02. The material shall be such it provides an Expansion joints system suitable for vertical wall to wall/ wall to corner application, both new and existing construction in office buildings & complexes with no slippin down tendency amongst the components of the Joint System. The Joint system shall utilise light weight aluminium profiles exihibiting minimal exposed aluminium surfaces mechanically snap locking the multicellular to facilitate movement. (Material shall conform to ASTM 6063). i) Wall joint of 100mm gap

Removing dry or oil bound distemper, water proofing cement paint and the like by scrapping, sand papering and preparing the surface smooth including necessary repairs to scratches etc. complete

Providing and fixing double scaffolding system (cup lock type) on the exterior side, up to seven story height made with 40 mm dia M.S tuve 1.5m centre to centre, horizantal & vertical tubes joining with cup & lock system with M.S tubesm M.S tube challies, M.S. clamps and M.S staircase system in the scaffolding for working platform etc. and maintaining it in servicable condition for the required duration as approved and removing it after. The scaffolding system shall be stiffened with bracings, runners, connection with the buildingetc wherever required 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. The elevational area of the scaffolding shall be measured for payment purpose. The payment shall be made once irrepective of duration of scaffolding. Note:- This item to be used for maintenance work judicially necessary deduction for scaffolding in the existing item to be done.

Repairs to plaster of thickness 12mm to 20mmin patches of area 2.5 sqm and under, including cutting the patch in proper shape, raking out joints and preparing plastering the wall surface with white cement based polymer modified self curing mortar, including disposal of rubbish, all complete as per the direction of Engineer-in-charge

Demolishing cement concrete manually/ by mechanical means including disposal of material within 50 metres lead as per direction of Engineer-in-charge i) Nominal concrete 1:3:6 or richer mix (including equivalent design mix)

Demolishing brick work manually/ by mechanical means including stacking of servicable material and disposal of unservicable material within 50 metres lead as per direction of Engineer-In-charge. i) In cement mortar

Dismantling old plaster or skirting raking out joints and cleaning the surface for plaster including disposal of rubbish to the dumping ground within 50 metres lead.

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

Providing and fixing machine moulded aluminium coverin of approved pattern & design made out of machine cut alumnium sheet and machine holed for receiving dash fastener, over expansion joints on vertical surfaces/ ceiling floors, the fixing on plate in one row on one side of joint shall be done with stainless steel dash fasteners of 8mm dia and 75mm long bolt including providing alumnium washers 2mm thick & 15mm dia, at a staggered pitch of 200mm centre to centre including drilling holes in the receiving surface and providing expandable plastic sleeves in holes etc. complete as per direction of Engineer-in-charge. i) Powder coated aluminium sheet mm 2.5mm thick (minimum thickness of powder coating 50 micron)

Filling the gap in between aluminium/ stone/ wood frame and adjacent RCC/Brick/ Stone/ wood/ Ceramic/ Gypsum work by providing weather/ structural non sag elastomeric PU sealant over backer rod of approved quality as per architectural drawings and direction of Engineer-in-charge complete, complying to ASTM C920, DIN 18540-F & ISO 11600 i) Upto 20 mm depth and 20 mm width

Providing, mixing and applying bonding coat of approved adhesive on chipped portion of RCC as per specifications and direction of Engineer-In-charge complete in all respect. i) SBR polymer (@10% of cement weight) modified cementitious bond coat @2.2 kg of surface area mixed with specified proportion of approved polymer

Providing and injecting approved grout in proportion recommended by the manufacturer into cracks/honey- comb area of concrete/ masonry by suitable gun/ pump at required pressure including cutting of nipples after curing etc. complete as per directions of Engineer-in-charge i) Stirrer mixed SBR Polymer (of approved make) modified cement slurry made with Shrinkage Compensating Cement in concrete/ RCC work

Providing and fixing Chlorinated Polyvinyl Chloride (CPVC) pipes, having thermal stability for hot & cold water supply and all CPVC plain & brass threaded fittings, including fixing the pipe with clamps at 1.0m spacing. This includes jointing of pipes & fittings with one step CPVC solvent cement and testing of joints complete as per direction of Engineer-in-charge i) 40mm nominal dia pipes

Filling of cracks in internal/external walls with Sika cracksil Acrylic paste or Dr. fixit crack-X paste or equivalent (ready to use paste) prepare surface by cleaning the surface to remove any dirt or loose particle and widening the cracks 4 to 6 mm wide and 6mm deep moistering with water and applying Sika cracksil Acrylic paste or Dr. fixit primeseal or equivalent, & allow it set for 24 Hrs. and then apply another coat, making sure that crack is totally filled up tooling the surface to obtain an even smooth and unbroken surface and curing of the cracks for all lift as directed by the Engineer-in-charge.

Providing and applying elastomeric polymer modified cementitious waterproofing treatment at the junctions of RCC beams, columns, slabs, etc. with fly ash brick masonry walls, for a minimum width of 200 mm on either side of the junction, including the following operations: Surface preparation- Preparing the surface by thoroughly cleaning the RCC and masonry surfaces to remove all loose mortar, dust, laitance, shuttering oil, grease, curing compounds, paint, etc. RCC surfaces shall be roughened by light hacking / wire brushing to provide proper mechanical key. Masonry joints shall be checked and any loose or weak mortar shall be removed. The surface shall be pre-wetted to SSD (Saturated Surface Dry) condition before application of coating. i) Application of first coat- Applying the first coat of approved elastomeric polymer modified cementitious waterproofing coating, mixed strictly as per manufacturer’s specifications, uniformly over the prepared surface for the specified width, using brush / trowel, ensuring full coverage without pinholes. ii) Fixing of glass fibre mesh- Immediately embedding alkali-resistant glass fibre mesh of minimum 45- 60 GSM, with mesh size approximately 4 mm × 4 mm, over the freshly applied first coat, ensuring proper alignment, overlap of not less than 50 mm at joints, and complete encapsulation of mesh without wrinkles or air pockets. iii) Application of second coat- Applying a second coat of elastomeric polymer modified cementitious waterproofing coating over the embedded mesh after initial setting of the first coat, fully covering the mesh and achieving a uniform, continuous and crack-bridging waterproofing layer. iv) Key formation for plaster-While the second coat is still green, lightly sprinkling clean coarse sand to create a mechanical key for subsequent plastering, or otherwise roughening the surface as per manufacturer’s recommendations. v) Curing- Curing the waterproofing treatment as per manufacturer’s instructions, including moist curing where specified, without damaging the coating. The rate shall include the cost of all materials, polymers, mesh, labour, scaffolding, tools and plants, surface preparation, curing, protection of adjoining surfaces, and all incidental operations required to complete the work in accordance with CPWD specifications, manufacturer’s recommendations, and directions of the Engineer-in-Charge.

Applying protection layer of Single component polymer modified fairing coat of Sika (Sika Emaco N 303) or Fosroc or Equivalent make to provide an excellent resistance to freeze/ thaw action, carbonation, ingress of water borne salts such as chlorides etc.

Providing waterproofing treatment for vertical walls by applying one coat of water based synthetic dispersion primer made up of Sika or Fosroc or Equivalent make followed by two coats of acrylic based liquid membrane of Sika or Fosroc or Equivalent make, in which the first and the second coat shall be applied perpendicular to each other