Construction of new substation with transformer yard and demolishing the existing substation to facilitate the construction of road and fire sump for the work of Construction of Electrical Science Block II Ground plus 6 Floors at IITMadras

Amount

CIVIL WORKS Clearing grass and removal of the rubbish up to a distance of 50 m outside the periphery of the area cleared.

Hire charges for providing temporary barricading around the site using GI corrugated sheet to a height of 6m. The GI corrugated /plain sheets of 0.35mm thick shall be fixed to the framework made out of 50mm dia MS pipe for vertical strut placed at about 3m centre to centre with required bracing using 40mm dia MS pipe placed about 2m centre to centre and fixing diagonal middle braces using 25mm dia MS pipe forming a rigid frame work as per the architectural drawing and direction of Engineer-in-charge. The barricade shall remain in the same location till the completion of the new work construction project. No additional charges shall be paid for the extended period of contract. The rate quoted shall be including cost of conveyance of all required materials to work site, erecting, removing and disposing the same after completion of work, cost of J bolts washers, cement concrete bed 45cm x 45cm x 75cm in CC 1:2:4 and labour charges etc., complete as per direction of Engineer-in-charge.

Dismantling of Existing sub station building and disposing the debris - The rate inclusive of dismantling of the existing super structure and foundation completely by engaging demolition equipment, collection and disposal of scraps and waste materials out side in IITM campus. The rate is inclusive of buy back the resalable materials obtained by demolition.

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

Supplying and filling in plinth with M-sand under floors, including watering, ramming, consolidating and dressing complete.

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 / M sand : 8 graded stone aggregate 40mm nominal size)

Centering and shuttering including strutting, propping etc. and removal of form work for : Columns, piers, abutments, pillars, posts and struts

Providing and laying in position of RCC of grade M35 Concrete for walls and floors, columns, beams and slabs excluding cost of centering, shuttering, finishing and reinforcement, including admixtures in recommended proportions as per IS: 9103 to accelerate, retard setting of concrete, improve workability without impairing strength and durability etc complete at all levels as per the direction of Engineer in charge. (minimum cement content 380 kg/cum + fly ash as per IS 456).

Supplying cutting bending and fabricating and placing in position as directed steel (SAIL, TISCO or RINL) reinforcement for RCC works in all floors, using MS or High Strength Deformed bars/RTS and MS binding wire 18 gauge etc complete at all levels. Fe 500D grade

Filling available excavated earth (excluding rock) in trenches, plinth, sides of foundation etc. in layers not exceeding 20cm in depth : consolidating each deposited layer by ramming and watering, lead up to 50m and lift up to 1.5m

Brick work with Fly ash concrete blocks of class designation M100 in foundation and plinth in ;Cement mortar 1:4(1cement :4 coarse sand / M sand)

Add Extra for brick work with Fly ash concrete blocks in superstructure above plinth level up to floor V level

6mm Cement plaster to ceiling of mix : 1:3 (1Cement : 3 Fine sand / M sand )

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

15 mm cement plaster on the rough side of Exterior or half brick wall of mix : 1:4 (1 cement: 4 fine sand)

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. 40 mm thick with 20 mm nominal size stone aggregate

Structural steel work riveted, bolted or welded in built up sections, trusses and framed work, including cutting, hoisting, fixing in position and applying a priming coat of approved steel primer all complete.

Providing drilling and driving of various Dia & Shape Anchor rods / Anchor fastener of HILTI make or approved equivalent including all other consumables like chemicals, foils, Grouting materials using HILTI make machinery, tools & plants, all accessories etc. complete and as directed. (HST 3 8/10 - 75 mm long).

Providing, laying, spreading and compacting graded stone aggregate (size range 53 mm to 0.075 mm ) to wet mix macadam (WMM) specification including premixing the material with water at OMC in for all leads & lifts, laying in uniform layers with mechanical paverfinisher in sub- base / base course on well prepared surface and compacting with vibratory roller of 8 to 10 tonne capacity to achievethe desired density, complete as per specifications and directions of Engineer-in-Charge.

Providing and laying factory made chamfered edge Cement Concrete paver blocks in footpath, parks, lawns, drive ways or light traffic parking etc, of required strength, thickness & size/ shape, made by table vibratory method using PU mould, laid in required colour & pattern over 50mm thick compacted bed of sand, compacting and proper embedding/laying of inter locking paver blocks into the sand bedding layer through vibratory compaction by using plate vibrator, filling the joints with sand and cutting of paver blocks as per required size and pattern, finishing and sweeping extra sand. complete all as per direction of Engineer-in- Charge. (80 mm thick C.C. paver block of M-30 grade with approved color design and pattern.)

Providing and fixing on wall face unplasticised - Rigid PVC rain water pipes / SWR pipe conforming to IS : 13592 Type A including jointing with seal ring conforming to IS : 5382 leaving 10mm gap for thermal expansion (Finolex/Prince/Supreme). 160 mm diameter pipe

Supplying and fixing GI base clamp of all size (galvanised) for laying/ fixing pipe lines of various diameter on walls, the rate inclusive of necessary U-clamp for fixing pipes, acnchour fastner for fixing the clamp etc complete. The measurement will be made based on the actual weight of the clamp and necessary bolt.

Providing and fixing on wall faced unplasticised - PVC moulded fitting / accessories for unplasticised - Rigid PVC rain water pipe.Bend 87.5 degree 160mm

Providing and fixing on wall faced unplasticised - PVC moulded fitting / accessories for unplasticised - Rigid PVC rain water pipe. Show (plain) 160mm

WATER PROOFING TREATMENT SYSTEM FOR THE ROOF TERRACE Roof treatment - : Providing and laying PU membrane (moist cured) over the existing terrace including providing Khura and Gola, laying the heat reflective tile over the membrane etc., complete. The work should be carried out involving the following items, sequences and specifications. a) Polymer modified mortar :- Resurfacing of the substrate with Sika Latex (or MIXBOND SBR of FABCHEM, Rheomix 141 of BASF or Nitobond SBR of FOSROC) polymer modified cement mortar (Cement: sand ratio : 1:3 with a Water (Mixed with Sika Latex) cement ratio of 0.4-0.45), with a minimum thickness of 20 mm, to get a levelled surface. The dosage of Sika Latex will be 4 kgs per bag of cement. The rate should be inclusive of bonding coat with cement and latex mix of ratio 1:1 over the cleaned surface before application of mortar. b)Treatment to rain water mouth / Khura- making opening for fixing the rain water pipe with a diameter of the opening should be more than 25cm around the rain water pipe to be fixed. The new rain water pipe to be fixed to the opening after installing swellable acrylic based PU water bar around the pipe, fixing the rain water pipe to the opening made and filling the gap between the rain water pipe and the opening with non shrink grout without any gap, applying a layer of cementitious water proof coating over the rainwater floor mouth (The rate also inclusive of applying a layer of cementitious coating Cement : SBR 1:1 ratio over the wall floor junction before applying coving) and finishing the surface neatly. c) Providing gola / coving 75x75 mm in cement concrete 1:2:4 admixed with 4 Ltr of SBR latex for 50 kg of cement (1 cement : 2 coarse sand : 4 stone aggregate 10 mm and down gauge), including finishing with cement mortar 1:3 admixed with 4 Ltr of SBR with 50 kg of cement (1 cement : 3 fine sand) as per standard design. The rate also inclusive of applying a layer of cementitious coating Cement : SBR 1:1 ratio over the wall floor junction before applying coving. d) Supply and applying PU moist cured- Supplying and laying single component PU system using spray application only with MC-HYPERDESMO or equivalent product of SIKA / BASF/ ASIAN PAINT / FOSROC is a one component polyurethane fluid which cures with the humidity in the atmosphere. It produces a highly elastic membrane with strong adhesion to many types of surfaces. It is based on pure elastomeric hydrophobic polyurethane resin plus special inorganic fillers, which result in excellent mechanical, chemical, thermal, UV and natural element resistance properties. Apply with airless spraying in two, at least, coats with minimum total consumption of 1.5-1.8 kg/m2 or as specified by the manufacturer. The rate inclusive of necessary surface preparation to receive the waterproofing coating etc., complete.

e)Ponding test by storing water for a minimum depth of 20 cm and the water to be retained for not less than 48 hours or as required by engineer in charge to ascertain any leakage. Necessary repair / grouting to be done free cost to arrest any leakage observed. f)Geotextile:- Supply and apply a polyester based geotextile protection fleece. Product: Sarnafelt® 300 or equivalent approved by IITM. Product requirements: density ≥ 300 g/m2; thickness 2.4 mm; tensile strength ≥ 430 N/50mm; elongation at break ≤ 100 %; tear strength ≥ 250 N; puncture resistance ≥ 1600 N; cone drop: 13 mm. g)Providing and laying light weight concrete of grade not less than M2.5 using expandable polystyrene aggregate to maintaining adequate of density 800-900 kg/ cum and same shall be laid to maintain slope to drain the rain water over the geotextile (not less than 1 in 80).The minimum cement contnent shall not less than 250 Kg/cum. The mix design shall be approved by the engineer incharge. Minimum thickness of the concrete shall be 5cm. h)Providing and fixing Heat Resistant Terrace Tiles (300 mm x 300 mm x 9.5 mm) manufactured by ABC or equivalent with SRI (solar refractive index) > 78, solar reflection >0.70 and emittance >0.75 on 30 mm thick cool mortar as per manufacturer specification on sloped surface of terrace, laid on water resistant cement slurry prepared in the ratio of 1:3 ( 1 cement and 3 abc plus powder and add 3% Nano Acryl by volume) and grouting the joints (>3mm) with abc Grout and PPF (Poly Propylene Fiber) in the ratio of 2 to 3 gm PPF per kg of abc Grout including wetting (by using a piece of sponge) the grouted surface by abc Nano Clear in the ratio of 100 ml in two liter water. , including providing skirting upto 300 mm height along the parapet wall in the same manner.

Providing and fixing factory made uPVC white colour casement/casement cum fixed glazed windows comprising of uPVC multi-chambered frame, sash and mullion (where ever required) extruded profiles duly reinforced with 1.60 ± 0.2 mm thick galvanized mild steel section made from roll forming process of required length (shape & size according to uPVC profile), uPVC extruded glazing beads of appropriate dimension, EPDM gasket, stainless steel (SS 304 grade) friction hinges, zinc alloy (white powder coated) casement handles, G.I fasteners 100 x 8 mm size for fixing frame to finished wall, plastic packers, plastic caps and necessary stainless steel screws etc. Profile of frame & sash shall be mitred cut and fusion welded at all corners, mullion (if required) shall be also fusion welded including drilling of holes for fixing hardware's and drainage of water etc. After fixing frame the gap between frame and adjacent finished wall shall be filled with weather proof silicon sealant over backer rod of required size and of approved quality, all complete as per approved drawing & direction of Engineer-in-Charge. (Single / double glass panes and silicon sealant shall be paid separately) Note: For uPVC frame, sash and mullion extruded profiles minus 5% tolerancein dimension i.e. in depth & width of profile shall be acceptable. Variation in profile dimension in higher side shall be accepted but no extra payment on this account shall be made. Casement window double panels with S.S. friction hinges (300 x 19 x 1.9 mm) made of (small series) frame 47 x 50 mm, sash 47 x 68 mm & mullion 47 x 68 mm all having wall thickness of 1.9 ± 0.2 mm and single glazing bead of appropriatedimension. (Area of window above 0.75 sqm upto 1.50 sqm).

Providing and fixing M.S. grills of required pattern in frames of windows, etc. with M.S. flats, square or round bars etc. all complete Fixed to openings / wooden frames for windows with rawl plugs, screws, etc. or welding to the existing grills. The rate inclusive of applying priming coat with red oxide zinc chromate primer.

Other Minor works Providing and fixing G.I. chain link fabric fencing of required width in mesh size 50x50 mm including strengthening with 2 mm dia wire or nuts, bolts and washers as required complete as per the direction of Engineer-in-charge. Made of G.I. wire of dia 4 mm

Supplying and fixing rolling shutters of approved make, made of required size M.S. laths, interlocked together through their entire length and jointed together at the end by end locks, mounted on specially designed pipe shaft with brackets, side guides and arrangements for inside and outside locking with push and pull operation complete, including the cost of providing and fixing necessary 27.5 cm long wire springs manufactured from high tensile steel wire of adequate strength conforming to IS: 4454 - part 1 and M.S. top cover of required thickness for rolling shutters. 80x1.25 mm M.S. laths with 1.25 mm thick top cover

Convertion of existing rolling shutter into motorized Shutter Side Motor kalata make with Break and Side Bracket Plates for the automation of Rolling Shutter including Push button control switch, chain block arrangements for the manual operation including Roller Shaft arrangements & 6 CRCA lath strips 3.4 meter (more than 700 Kg lifting capacity).

Supplying and fixing F.R.P- Covered type (Fiber glass Reinforced Plastic) moulded gratings with perforation covered with FRP sheet manufactured with continuous fiberglass strands, thoroughly wetted with chemical resistant polyester resin, interwoven between each other forming a one-piece structure by means of an exclusive mechanized processor (TEKNOTEX) with following finishes Surface : Anti-slip surface with integrated quartz grit Colour : yellow / blue Height : H38 Mesh : 38mmx38mm x (7mm top, 5mm in bottom) Dimension :3mx1m(Length x Width) The rate inclusive of labour and tools for cutting the gratings to fit in the existing gutter, wastage etc complete. The contractor should also give warranty for 7 year for the product in the form of bank gurantee.

Providing and fixing stainless steel ( Grade 304) railing made of Hollow tubes, channels, plates etc., including welding, grinding, buffing, polishing and making curvature (wherever required) and fitting the same with necessary stainless steel nuts and bolts complete, i/c fixing the railing with necessary accessories & stainless steel dash fasteners , stainless steel bolts etc., of required size, on the top of the floor or the side of waist slab with suitable arrangement as per approval of Engineer-in-charge, (for payment purpose only weight of stainless steel members shall be considered excluding fixing accessories such as nuts, bolts, fasteners etc.).

Supplying and fixing Eurocon/Gripton/Beton or equivalent step tiles of approved make and pattern from pavement series for external / internal flooring over 20mm thick cement mortar 1:4 (1 part cement 4 part sand / M sand) bed, jointed with cerafil as equivalent matching pigments to match the color of the tiles as directed by the Engineer-in-charge etc., complete

Providing and fixing plaster mesh of 80 GSM glass fibre mesh (non-alkaline) between concrete and brick masonry. The rate inclusive of labour, scaffoling, SS nails for fixing the mesh etc., complete.

Supplying 40mm stone ballast aggregate

Providing and fixing of Rebars of 12mm dia at specified c/c in the lintel beams by drilling of holes of 16mm dia upto a depth of 100mm as per the manufacturer recommendation, cleaning the holes with water and airblower to make sure that there is nofine particles present inthe hole followed by chemical anchoring application using Lokfix E75 incatridge as per the given proportions recommended by the manufacturer inthe clean edholes to aminimum depth of 2/3rd of the hole, fixing of the rebars. The cost to include all materials, labour, machinery, tools, tackles and consumables complete as per drawings, specifications, manufacturer’s recommendation, good engineering practice and as directed by EIC.Note:The rebars shall be separately measured and paid as per relevant item in the schedule of quantities.

Painting Applying super premium quality 100% interior Acrylic emulsion paint (ICI /Asian / Berger / Nippon / Nerolac) : (two or more coats over a primer coat including complete surface preparation, white cement based (JK / Birla) touch up putty / primer and making good the wall surface etc) Applying interior paint of approved colour, make, brand and product with surface coverage of painting as per the manufacturer specification. The interior paint shall be applied over dry surface after complete surface preparation removal of all loose or defective paint or powdery residue using mechanical methods with Zero dust vaccum technology followed with sealing the surface with a coat of approved interior primer before application of top coat of exterior paint. The contractor shall also carryout necessary surface preparation including removal of loose plastering, patch plastering, crack filling, micro-concreting, application of damp proof coating and making good the wall surface etc wherever required before applying primer coat. The contractor should ensure complete covering of floors using tarpaulin / plastic sheet while taking up the work. The rate quoted shall be inclusive of charges towards all labour, material, transport, scaffolding, safety arrangements, Personal Protective Equipments (PPE), tools and plants etc.

Finishing walls with 100% Premium acrylic emulsion paint having VOC less than 50 gm/litre and UV resistance as per IS 15489:2004, Alkali & fungal resistance, dirt resistance exterior paint of required shade (Company Depot Tinted) with silicon additives. New work (Two or more coats applied @ 1.43 litre/ 10 sqm. Over and including priming coat of exterior primer applied @ 0.90 litre/10 sqm.

Water based enamel painting -two or more coats with primer : Applying water based enamel paint of Asian premium semi gloss enamel paint of any colour approved by IITM (coverage not more than 75sq.ft for two coats for one litre of paint) or equivalent product of ICI/ Berger of required colour to give an even shade :2 or more coats on new work (ICI /Asian / Berger/ Nippon). The rate inclusive of application of one coat of primer over the surface with Asian paint premium aqua primer (Coverage 200 Sq.ft one coat per liter dilution 1 water with one litre of primer) . The contractor should ensure complete covering of floors using tarpolene / plastic sheet while taking up the work. The contractor should give warranty for the finishes for a period not less than 7 years as specified in tender conditions from the date of completion of the work.