External painting with structural repairs of PRAFPUL buildings at South Site, BARC, Trombay, Mumbai 400085

Providing and applying durable exterior emulsion paint formulated with engineered pure acrylics latex based on nanotechnology, with life of min. 10 (ten) years, having crack bridging ability up to 2.4 mm and superior anticarbonation & waterproofing properties, surface cross linking feature, high resistance to growth of algae, high Dust Pick Up Resistance (DPUR), resistance to fading of colours, protection against bird dropping, good washable property including the cost of materials, spray / roller application, labour, consumables, tool & plants/equipment etc. complete in all respect as per manufacturer’s specifications and as directed by the Engineer - in-Charge. Base coat (main waterproofing coat): minimum 2 (two) coats of fibre reinforced liquid applied membrane (to be applied before top coat) with allowable dilution as per Note below. Top coat: minimum 2 (two) or more coats of Organo-Silicon, UV Cross linking emulsion. Note : 1) Coverage for new surface (sand faced plaster): For Base Coat - approx. 40-45 sq.ft./litre with 1st coat of Base Coat with 30% dilution and 2nd coat of Base Coat with 10% dilution with potable water and for top coat - approx. 55-60 sq.ft./litre with 30-35% dilution with potable water only. 2) Coverage for old surface (sand faced plaster): for repainting on old surfaces, 1st coat of Base Coat with 30% dilution only on repair/patch work and 2nd coat of Base Coat with 10% dilution with potable water on overall surface - approx. of 40-45 sq.ft./Litre prior to 2 coats of top coat application i.e. with 35% to 40% dilution with potable water - approx. 55-60 sq.ft./Litre. 3) Warranty : Minimum 10 (ten) years' warranty against water proofing, paint performance and anti-algal properties. 4) Scaffolding will be paid separately under relevant Item. 5) The paint shall conform to international VOC specifications and shall not contain hazardous materials/ heavy metals / toxic materials. 6) Tentative / suggested make for guidance of bidder(s): For Base Coat - M/s Asian Paints Ultima Protek Duralife or equivalent and for Top Coat - M/s Asian Paints Ultima Protek or equivalent.

Providing and fixing double tubular scaffolding system using H- frames with cup lock type on the exterior side upto seven story height made with 40 mm dia M.S. tube 1.5 m 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. The elevational area of the scaffolding shall be measured for payment purposes. The payment shall be made once irrespective of duration of scaffolding

Providing and fixing construction safety netting cloth around scaffolding. The cloth shall be tied with necessary suitable arrangement in such a way that no area is left out at the edges as well as at the overlap p01tions and keeping the same in position during the entire period of work. the cloth net shall be maintained from time to time by replacing the damaged portion. the same shall also be cleaned as regular interval so as not to accumulate the debris. the same shall be removed after completion of work as directed by Engineer in Charge. The cost includes all the materials , labours, ropes , required for tieing/ fixing at site complete .

Providing 20 mm thick plastering using Ready mix external plastering compound of approved make for external faces of brickwork / concrete surfaces including preparation of the surface, curing, cleaning scaffolding up to 10 metres height complete.all as per specifications including forming drip moulds wherever necessary and as directed by the Engineer-in-charge

Providing SFMC Micro concrete for strengthening of structural members including mixing, pouring, curing as per manufacturer specifications and as directed by the Engineer-in-charge.Using SFMC with 50% Quartz aggregate by weight (Only SFMC consumed alone will be measured for payment)

Providing structural repairs in old damaged concrete structures / surfaces with approved Polymer with following operations 1) Removal of loose/Spalled or damaged concrete by chipping and cleaning the concrete surface and reinforcement steel with wire brush and with water 2) Cleaning the re bars with Acetone for complete rust removal and washing with water to make the surface clean. 3) Applying protective coat / bond coat using polymer and cement in the proportion of 1; 1.5 (1 part of polymer and 1.5 parts of cement in synthetic enamal paint like consistancy with brush 4) Reinstate the area with polymer modified mortar in layers of maximum 20 mm with the proportion of Cement 50 Kg : washed and dried river sand 87.50 kg ; silica sand 37.50 Kg. mixed with 10 litres of Polymer (or 1 Kg cement : 1.75 kg washed and dried river sand ; 0.75 Kg silica sand : 200 ml polymer) 5) If thickness of repair exceeds 20mm , after every 20 mm thick repair, bond coat as per 2 above to be applied and further thick of repair to be continued for each layer. This work is inclusive of all materials, labour, complete all as directed at site using approved polymer suitable for structural repair shall be used) Note: Scaffolding will be paid separately under relevant item

Providing and Painting two coats of synthetic enamel paint on steel surfaces of approved brand and manufacture to give an even shade over a suitable primer coat.including preparation of the surfaces, providing and fixing scaffolding wherever required complete. as per specifications and as directed by the Engineer-in-charge

Providing, supplying and sealing the 50mm wide Expansion Joints with elastomeric Polyurethane sealant (PU) sealant suitable for RCC Construction Joints of 'Hyperseal Expert 200' of M/S. ALCHEMICA construction Chemicals make or approved equivalent by removing the expansion joint sealent and cleaning the suface neatly, placing the backer rod wherever required in case of displacement or non-existing and filling elastomeric Polyurethane sealant (PU) up to 25 mm deep to the lines and levels complete all as per manufacturers specifications and as directed by the project engineer. Item also includes cost of removing before sealing the joint and refixing of existing expansion joint aluminium plate and/or angles after completion of work.

Providing and laying in position Reinforced Cement Concrete (RCC) of grade M-30 using 20mm maximum size aggregates and crushed sand of approved quality including admixtures of approved brand and quality (plasticiser or super plasticiser) if required, including weigh batching, mechanical mixing, transporting, placing, vibrating, consolidation, finishing, curing etc. complete but excluding the cost of centering, shuttering and reinforcement complete as per specifications

Providing Reinforcement Steel for reinforced cement concrete at all levels including supplying, preparation of bar bending schedules, cutting, bending, transporting, fixing, tieing in position with PVC coated G.I binding wire, all labour charges, cost of cover blocks in specified grade of concrete etc. complete as per specifications and drawings. Using TMT bars of specified grades all dia bars. TMT bars to be supplied by the contractor manufactured by other than SAIL, RINL or TATA and approved brands of BARC only