Retrofitting works for HASL cooling tower room at IGCAR, Kalpakkam.

Amount

All kinds of soil with depth upto 1.5m below average Ground level and disposing surplus excavated earth upto a lead of 50 metres.

Providing and fixing double Tubular scaffolding system using H-Frames / APS system or (cup lock type) on the exterior side made with 40mm dia M.S. tube 1.5m centre to centre horizontal and vertical tubes joining with cup and lock system with M.S. tubes, M.S. tube challies, M.S clamps and M.S staircase system in the scaffolding for working platform etc. and maintaining it in a serviceable condition for the required duration as approved and removing it thereafter. The scaffolding system shall be stiffened with bracings, runners, connection with building etc. wherever required for inspection of work at required locations with essential safety features for the workmen etc. complete as per directions and as approved by the Engineer -in-Charge. Note : 1. The elevation area of the scaffolding shall be measured for payment purposes. 2. The payment shall be made once irrespective of duration of scaffolding. 3. The scaffolding system drawing shall be got approved by Engineer-in-Charge. 4. The contractor has to observe all safety procedure while working on heights as per I.S. 3696 (Part-I) (Safety Code for scaffolds). 5. Screen of suitable material shall be provided to the full height of scaffolding and securely tied to protect falling objects coming out during the work is in progress. 6. Necessary aluminium / M.S. ladder shall be provided at the cost of the contractor, to the full height of scaffolding at required location around the building to enable Departmental Supervisor/Engineer climb up and closely watch the repair work of the building.

Dismantling Plain Cement concrete by manually / by mechanical means at all levels, carefully without damaging adjacent structures including disposal of debris with 50m lead, labour, tools required etc. complete in all respects as per specifications and directed by the Engineer-in-charge.

Dismantling of RCC works at all levels by manually / by mechanical means, including Cutting and stacking of steel reinforcement bars and disposal of unserviceable materials within 50m lead as per specifications and directed by the Engineer-in-charge.

Dismantling brick work in cement mortar at all levels by manually / by mechanical means, carefully without damaging adjacent structures including stacking of serviceable materials and disposal of unserviceable materials within 50m lead all as per specifications and directed by the Engineer-in-charge.

Dismantling old weather proofing materials such as brick bat coba or foam and screed concrete at all levels and cleaning the surface including disposal of rubbish to the dumping yard within 50 metres lead all as per specifications and directed by the Engineer-in-charge.

Chipping of unsound/weak concrete material from slabs, beams, columns etc. with manual Chisel and/or by standard power driven percussion type or of approved make including tapering of all edges, making square shoulders of cavities including cleaning the exposed concrete surface and reinforcement with wire brushes etc. and disposal of debris for all lead and lifts all complete as per direction of Engineer-in-Charge for the following.

Upto 25mm average thickness

Chipping the RCC around the steel reinforcement with average 25mm gap (but not less tha 15mm clear air gap) including chipping the concrete with sharp tools without damaging the reinforcement, cleaning the reinforcement to facilitate application of rust remover/anti corrosive treatment etc. for below mentioned steel reinforcement all complete as directed by the Engineer-in-Charge.

Bars upto 12mm diameter

Bars above 12mm diameter

Cleaning of reinforcement from rust from the reinforcing bars of following diameter to give it a total rust free steel surface by providing and using chemical rust remover of ‘Cera Rust remover/Fosroc Reebaklens RR/Sika Rustoff-100 or approved equivalent make with paint brush and removing loose particles after 24 hours of its application with wire brush and thoroughly washing with water and allowing it to dry, all complete as per direction of Engineer-in-Charge.

Bars upto 12mm diameter

Bars above 12mm diameter

Providing and applying two coats of Anti Corrosive Protection paint (Epoxy Zinc rich primer) of ‘Cera Zinc ZR / Fosroc Nitozinc Primer / Sika FerroGard-950 IN‘ or approved equivalent make over reinforcement of below mentioned diameter complete all as per manufacturers specification and all as directed by the Engineer-in-Charge.

Steel reinforcement bars upto 12mm diameter

Steel reinforcement bars above 12mm diameter

Providing, mixing and applying epoxy resin based bonding agent coat of ‘Cera Bond EP / Fosroc Nito Bond EP/ Sikadur-32 IN’ or approved equivalent on chipped portion of concrete/prepared concrete surface, complete all as per specifications and as directed by the Engineer-in-Charge

Providing and placing in position Micro-concrete of below mentioned grade Cera Micro concrete or Fosroc Renderoc RG or SikaRep Microcrete-4 or approved equivalent make, which shall be cement based prepacked single component, chloridefree, non shrink, freeflow, self compacting, ready to use after mixing water in specified proportion obtained from approved manufacturer for used in members as directed, all as per specification and directions of Engineer-in-Charge. (Payment under his item shall be made only after proper wet curing has been done and surface has been satisfactorily evaluated by sounding /tapping with a blunt metal instrument)

Micro concrete of M65 grade

Providing rigid and water tight centering and shuttering at all levels, using best quality plywood/wood/steel forms and centering with steel props, acro tubes etc., including strutting, propping, bracing, staging, necessary bracings in all axes to give a stable assembly etc., complete for all RCC items fixed in position as required including all materials, labour, careful removal of form work after the concrete attains the sufficient strength to self-support itself without cracking and distortion etc., complete all as per specifications In Horizontal / Vertical/ slanting surfaces for Columns, pillars, piers, struts, mullions, and all other required members all directed by the Engineer-in-Charge. The measurement for the formwork will be the actual area of forms in contact with concrete surfaces.

Providing plastering mixed with SBR polymer at all elevations 20mm thick in two coats (each layer not exceeding 10mm thick) in polymer modified cement mortar 1:5 using crushed stone sand, with SBR polymer admixed in proportion @ 2 percent weight of cement (75mm size cube crushing strength at the end of 28-day to be not less than 20 N/sq.mm.) including hacking of concrete surfaces with pointed tool wherever necessary, scaffolding, finishing, curing, cost of polymer, forming grooves wherever necessary, trowelling with wooden tools all as per specifications and as directed by the Engineer-in-Charge. Note : 1. Payment under this item shall be made only after proper wet curing has been done and surface has been satisfactorily evaluated by Department Engineers. 2. Preferred make of SBR from ‘Cera latex SBR / Fosroc Nito Bond SBR / Sikalatex SBR’ or approved equivalent

Providing and laying plain cement concrete 1:4:8 using 20mm maximum size graded aggregates and crushed stone sand including mechanical mixing, transporting and placing in required position, ramming, compaction, levelling, curing, shuttering, dewatering if any, complete all as per specification for levelling courses in foundation for walls, footings, floor drains etc., encasing pipes and other required works directed by Engineer-in-Charge complete all as per specifications.

Providing, straightening, decoiling wherever necessary bending, cutting, binding and fixing in position steel reinforcement at all levels TMT bars of Fe500D grade steel conforming to IS:1786 SAIL or VIZAG or approved equivalent make and tying with approved annealed binding wire of 1.6mm dia in all reinforced cement concrete work at all lifts, including cost of supplying and fixing the spacer/cover blocks in cement mortar 1:2 and binding wire complete all as per specification and as directed by the Engineer-in-charge at all lifts. Note: The rate shall be including the cost of reinforcement steel. The reinforcement steel will be procured from dealers with a test certificate as approved by the department. For further details please see point 7 of Section VIII, General Information for Guidance of Tenderers.

Providing and constructing brick masonry at all lifts using well burnt stock bricks / Flyash bricks in cement mortar 1:5 using crushed stone sand including suitable scaffolding, raking out joints, curing complete as per specifications and drawings for foundation, superstructure, etc. for the following

Above FFL to Five floor level [Each floor height 3.75m]

Providing plastering to the internal surfaces of brickwork/concrete at all elevations/levels in cement mortar 1:5 using crushed stone sand, 12mm thick including hacking of concrete surfaces with pointed tool, scaffolding, finishing, curing, forming grooves wherever necessary, all as per specifications and as directed by the Engineer-in-Charge.

Providing plastering to the external surfaces of brickwork/concrete at all elevations/levels in cement mortar 1:5 using crushed stone sand, 20mm thick in two coats including hacking of concrete surfaces with pointed tool, scaffolding, finishing, curing, forming grooves wherever necessary, all as per specifications.

Providing and applying painting Two coats at all levels with premium Plastic emulsion paint of (Asian or Equivalent approved brand, colour and manufacturer) to give an even shade including preparation of the surfaces, applying putty (putty for touch up to fill up crevices, mild depression etc.), scaffolding complete all as per specifications and as directed by the Engineer-in-Charge.

Providing and applying a Anti-Carbonation coating to the external wall surfaces (Rough cast / Plain surfaces) at all locations and at all elevations including removing existing emulsion or any coat, preparing the surface, providing and applying a single component acrylic polymer based protective coating ‘Cera Infraguard – WA / Fosroc Dekguard E2000 / Sikagard 550 W IN or approved equivalent of a minimum of 2 coats over a primer coat with Cera Infraguard – WA primer / Fosroc Dekguard WB primer / Sikagard-552 IN Primer W’ or approved equivalent and cost of all materials, labour, tools, tackles, equipment’s, transport etc. complete all as directed by Engineer-in-charge and as per the specifications. The total dry film thickness of both coats excluding primary coat should be minimum of 200 microns. Note: 1) Scaffolding work will be paid in separate item. 2) The contractor shall arrange the suitable safety arrangements for executing the work at his own cost as directed by the Engineer-in-Charge.

Providing and applying painting Two coats on wood work and other required internal surface at all levels with Synthetic enamel paint (Asian or approved brand, colour and manufacturer) to give an even shade including preparation of the surfaces, scaffolding complete all as per specifications and as directed by the Engineer-in-Charge.

Providing and laying cement based water proofing treatment with a course layer of broken bricks of various sizes to an average thickness of 100mm over a 20mm thick bed of cement mortar 1:5 using crushed stone sand mixed with water proofing compound, plastering the top layer 12mm thick in cement mortar 1:5 using crushed stone sand, mixed with waterproofing compound, finished smooth with thread marking at 300mm squares (South India water proofing or equivalent, ratio to cement shall be as per manufacturers specification or 2% to be adopted) Note: Suitable guarantee for 10 years is to be provided for this work. This work has to be executed as per the specification and direction of the Engineer-in-charge.

Manufacturing, supplying, hoisting and fixing in position at all lifts, precast units of various patterns and sizes for precast fence post in M30 grade using 20mm and below machine crushed graded stone aggregate including weigh batching, mechanical mixing, casting, vibrating, finishing of exposed faces, curing, necessary formwork, moulds, transporting and placing at all lifts, preparation of connections, grouting with cement mortar/cement grout wherever needed excluding steel reinforcement complete all as per drawing, specification and as directed by Engineer. Note: 1. The rate shall be quoted on the basis of using 370 Kg. of cement per cu.m. of concrete. Any upward/downward variation required to obtain the specified strength will be paid for or deducted at the rate specified in schedule F. 2. The rate of concrete shall include all labour, equipment, charges for mixing & cost of admixture. Chemical admixture confirming to IS:9103 shall be mixed in fresh concrete and prior permission from Engineer-in-charge shall be obtained for dosage and compatibility 3. Test certificate of cement, procured from dealer/company to be submitted for all cement related works by the Contractor.

Providing and fixing PVC rain water downtake pipes conforming to IS:13592 Type A and PVC SWR Fittings & specials confirming to IS:14735, ‘Finolex’ or other approved equivalent make of pipes, fittings & specials including jointing with seal ring / with PVC solvent adhesive including fixing in walls/columns using clamps, anchor fasteners, bolts and teakwood packing pieces, joint testing etc complete all as per drawings, specifications and as directed by the Engineer-in-Charge.

PVC SWR Rain water pipe 110mm outer dia

Conveying the surplus excavated earth & debris, boulders and spoil by mechanical means and depositing at places inside DAE installation identified as Dumping yard as per requirement with a lead specified below including loading, unloading, breaking clods, levelling all complete as per specification and as directed by the Engineer-in-Charge. Note: 1) The rates in respect of this Item are applicable for the NET Quantities arrived at after making deductions for voids @ 20% in respect of soil and @ 50% in respect of Rock from the corresponding Stack / Truck measurements. 2) The earth shall be dumped well inside the Dumping yard and not over approach pathway road.

Lead charges for lead Exceeding 3 kilometre but not exceeding 4 kilometre

Supplying and fixing in position of Alkali resistance Glass fibre mesh (4-5mm square aperture with 145gsm) over the joints of RCC and Brick work and other required surfaces with cement paste before plastering or further surface treatment including cost of cement paste, overlapping etc. complete all as directed by the Engineer-in-Charge.

Removing / cutting of existing wooden window with glass pane with frame and fixing the existing frame with hold fast in to masonry structure neatly as directed by Engineer-in-Charge. Note: The cutting of existing window has to done carefully without damaging the remaining part of existing window to be fixed. Contractors are advised to visit to know about this item of job at site before quoting.

Providing and fixing anodized aluminium (Anodised transparent or dyed to required shade according to IS:1868 Minimum Anodic coating of grade AC 15) work for doors, windows, ventilators and partitions with extruded built up standard tubular sections / Z Sections and other sections of approved make confirming to IS:733 and IS:1285 fixed with rawl plugs and screws or with fixing clips or with expansion hold fastners including necessary filling up of gaps at junctions, at top, bottom and sides with required PVC / neoprene felt etc. Aluminium sections shall be smooth, rust free, straight, mitred and jointed mechanically wherever required including cleat angle, Aluminium snap beading for glazing / panelling, C.P brass / stainless screws all complete as per architectural drawings and and directions of Engineer-in-charge including making provision for fixing of fittings wherever required. (fittings, Glazing and panelling shall be paid for separately) Note : 1) The rates for aluminium is inclusive of all fasteners required for fabrication and fixing in the walls. 2) All joints shall be of mittered Joints. 3) A long M.S rod threaded at both ends to be provided in all aluminium door shutters in Top & bottom Horizontal members internally connecting Vertical members and fixed with M.S washers & nuts. 4) Only Aluminium members alone shall be measured and paid for.

Leveling the area to the required gradient in all types of soil including cutting the mounds wherever required, for filling the low lying area in layers not more than 150mm thickness, each layer well rammed and consolidated by hand/mechanical roller including ramming, consolidation, levelling to proper gradient, dressing the top surface to the required level, conveying the surplus excavated soil by head load upto a lead of 200m, all complete as directed by Engineer-in-charge.

Supplying and fixing in position ornamental aluminium anodized grill standard section of deco grill or any other approved equivalent with aluminium matt finish having grill pattern 75x75mm of 7mm thick for window opening fitted with aluminium channel, beading clips, etc., complete all as per manufacturers specification and as directed by the Engineer-in-charge. Note: Sample of grill shall be got approved before bulk purchase.

Providing and laying 65mm thick moulded with vibratory compaction Factory made cement concrete precast Interlocking paver block of M30 grade made and approved size, shape, design, colour & pattern including laid over 100mm thick compacted bed of coarse sand using crushed stone sand, filling the joints with coarse sand, compaction mechanically etc. all complete all as per the direction of the Engineer-in-Charge. Note: The sample tile shall be got approved by the Engineer-in-charge before procurement.

Providing repair work to the cracks in joints between plastered wall to column/beam junctions and other required locations and at all elevations upto 20 to 30mm deep and below mentioned width including preparing the surface, applying polymer bonding agent, cost of all materials, labour, tools, tackles, equipment’s, transport etc. complete all as directed by Engineer-in-Charge and as per the specifications. a) Surface preparation: Chipping and removing the existing plastered wall surfaces to the required depth and surface preparation such as removing the loose materials, dust and other laitance with wire brush and coir brush, etc. complete. b) Bonding coat on surface: Providing and applying a coat of epoxy resin based bonding agent of ‘Cera Bond EP / Fosroc Nito Bond EP/ Sikadur-32 IN’ or approved equivalent to the cleaned and prepared concrete surface prior to applying of polymer modified mortar. c) Polymer modified mortar : Applying polymer modified mortar 1:3 (1 cement : 3 crushed stone sand) admixed with ‘Cera latex SBR / Fosroc Nito Bond SBR / Sikalatex SBR or approved equivalent’ at 6% weight of cement (or as per manufacturer recommendation) for a thickness of 20mm to 30mm by mechanically or manually and neatly finished as instructed over the prepared surface. Note: 1) Scaffolding will be paid in separately in the relevant item. 2) The contractor shall arrange the suitable safety arrangements for executing the work at his own cost as directed by the Engineer-in-Charge.

Above 50mm and upto 100mm wide

Providing and fixing glazing 5mm thick tinted colour Float glass pane in aluminium doors, window, ventilator shutters and partitions etc with Neoprene gasket including cost of neoprene gasket complete as per the drawings and directions of the Engineer-in-Charge.

Removing the MS window grill by dismantling the clamp carefully without damaging the wall and refixing the same after work completed in existing position with cement mortar/concrete and making the surface to the original condition including required labours, tools etc. complete., as directed by the Engineer-in-Charge

Providing and fixing roofing sheet, cladding with 0.47mm thick colour coated concelled system profile corrugated/semi corrugated/plain zincalume sheets of 55mpa yield stress (AS 1397 – Zincalume AZ 150) with coating class AS/NZS 2728 (minimum 150 grams per relevant standard) having a total coating thickness of 35 micron. The sheet should be rolled over specially designed concealed fixing clip manufactured from hi-tensile Aluminium Zinc alloy Zincalumen steel based and galvanized hooks. The clip should be fastened with minimum 40micron Zinc coated / minium 25micron Zinc-Tin alloy coated. The rate is inclusive of all fixtures required for fixing the side roof, cladding on all sides, ridges etc. complete all as per specification and as directed by the Engineer-in-Charge.

Providing, supplying, cutting, bending to shape, welding, fabricating, hoisting, placing and fixing in position structural steel members like MS structural embedment’s/pipe and sleeves/penetration etc. using MS angles, channels, I-sections, plates, tees, flats, rounds, sag rod, square sections etc. including chamfering and rounding off the edges, applying a coat of Red lead paint primer / Zinc chromate primer of approved make and 2 coats of flat oil paint / synthetic enamel paint of approved colour and make, scaffolding and staging required for fabrication as well as erection complete all as per specifications, drawings and as directed by the Engineer-in-charge. Note: Lifting device arrangements if any required also arranged by the contractor at his own cost.

De-assembling and assembling after servicing the aluminium glazed window frames and sliding shutter frames of different sizes in various elevations and removing the glasses from the section to facilitate new gasket replacement including cleaning guide ways of outer frame and shutter using suitable tools/equipment’s and removing the existing sun control film if any and cleaning the aluminium section and glass and other minor repairing and correction required for the free movement of sliding and locking shutter to be properly achieved etc. complete any replacement of worn-out item with a new materials will be paid for separately under relevant schedule items all as directed by the Engineer-in-Charge.

Providing and applying silicon sealant 789 on the gap in between the masonry and aluminium and making the joint water tight including removing the mortar inside the joint as required, labours and tools etc. complete., all as directed by the Engineer-in-Charge.

Supplying and Fixing the following approved make and type hardware fixtures with suitable screws/ nuts and bolts etc. including removing the existing damaged fixture complete all as directed by the Engineer-in-Charge.

Sliding shutter bottom wheel

PVC switch type Heavy duty sliding aluminium glazed window shutter lock of 80mm long

EPDM rubber / Nylon gasket for Glass sliding window shutter

EPDM rubber / Nylon gasket for Glass Aluminium partition

S PERIYASAMY (BID ID -3336740)