Repair and exterior painting work and waterproofing treatment for 10 nos blocks of Type-II family quarters at RTC CRPF Peringome Kannur Kerala

Repairs to plaster of thickness 12 mm to 20 mm in patches of area 2.5 sq.meters and under, including cutting the patch in proper shape, raking out joints and preparing and plastering the surface of the wallscomplete, including disposal of rubbish to the dumping ground, allcomplete as per direction of Engineer-in-Charge. With cement mortar 1:4 (1 cement : 4 fine sand)

Removing white or colour wash by scrapping and sand papering and preparing the surface smooth including necessary repairs to scratches etc. complete

Finishing walls with Acrylic Smooth exterior paint of required shade : Old work (Two or more coat applied @ 1.67 ltr/ 10 sqm) on existing cement paint surface

Painting with synthetic enamel paint of approved brand and manufacture of required colour to give an even shade : One or more coats on old work

Providing and fixing aluminium work for doors, windows, ventilators and partitions with extruded built up standard tubular sections/ appropriate Z sections and other sections of approved make conforming to IS: 733 and IS: 1285, fixing with dash fasteners of required dia and size, including necessary filling up the gaps at junctions, i.e. at top, bottom and sides with required EPDM rubber/ neoprene gasket etc. Aluminium sections shall be smooth, rust free, straight, mitred and jointed mechanically wherever required including cleat angle, Aluminium snap beading for glazing / paneling, C.P. brass / stainless steel screws, all complete as per architectural drawings and the directions of Engineer-in-charge. (Glazing, paneling and dash fasteners to be paid for separately) : For fixed portion. Anodised aluminium (anodised transparent or dyed to required shade according to IS: 1868, Minimum anodic coating of grade AC 15)

Providing and fixing glazing in aluminium door, window, ventilator shutters and partitions etc. with EPDM rubber / neoprene gasket etc. complete as per the architectural drawings and the directions of engineer-in-charge . (Cost of aluminium snap beading shall be paid in basic item): With float glass panes of 4.0 mm thickness (weight not less than 10kg/sqm)

Extra for providing frosted glass panes 4 mm thick (weight not less than 10 kg per sqm) instead of ordinary float glass panes 4 mm thick (weight not less than 10 kg per sqm) in doors, windows and clerestory window shutters. (Area of opening for glass panes excluding portion inside rebate shall be measured).

Surface Preparation: Surface must be prepared by means of cleaning the surface by means of pressure washer to remove all unwanted materials and loose particles, the surface must be grinded to form a uniform surface, any cracks over the concrete surface must be cut into V- grooves and cleaned before application of any waterproofing system. Coving & Treatment of all concrete defects and opening the joints/cracks such as cold joint, construction joints, cracks, corner joints and areas around honeycomb in the RCC of raft slab and column / footing / retaining wall by forming V/U shape groove thereafter providing and applying Asian Paints SmartCare Repair polymer as bond coat thereafter sealing the groove with SmartCare Repair Mortar/Polymer modified mortar. Waterproofing: Providing and application of SmartCare PU Magnum Primer which is a two component water based epoxy primer having high abrasion resistance and hardness which can be applied over slightly damp surfaces which is having a density of 1.05kg/L, viscosity 900 mPa.s, adhesion to concrete >3N/sq.m which must be applied with a minimum consumption of 90g/Sq.m. Application of Asian Paints SmartCare PU Aqua over the primed surface with 3 coats with a consumption of 1.8 Kg/Sq.m which is a single component water based liquid applied poly urethane coating having tensile strength >1.5MPa as per ASTM CD 1475, elongation >400% as per ASTM D 2370, crack bridging ability upto 4mm as per AS-NZ-4548, solid content >60% as per ASTM C 1250 and having water impermeability 7bar upto 72hrs as per BS EN 12390-B. Application: After application of epoxy primer, first coat of PU Aqua is applied without any dilution, second coat of PU Aqua is applied with 30% dilution with normal water over the first coat after 7-8hrs making a sandwich with 40 GSM SmartCare Geotextile without forming any air bubbles, overlaps or joints must be done with min. of lap length 710cm and allowed to cure it for 7-8hrs. Third coat of PU Aqua is applied without dilution over the second coat.

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