REPAIR/MAINTENANCE TO RAIN WATER PIPE, ROOF, DOOR/WINDOW, FLOORING, PLASTERING, INTERNAL WATER SUPPLY ETC OF MD AND OTM ACCN OF BASE HOSPITAL AND MDC AT BARRACKPORE UNDER GE BARRACKPORE

Dismantling of plain or corrugated steel sheeting, any gauge or any thickness as in roof covering, wall cladding etc., complete all as specified and as directed.

M&L Pre- painted hot dip aluminium Zinc alloy metalic coated trapezoidal profile steel sheet 0.50mm thick ( Total coated thickness), any pattern corresponding to IS 15965 : 2012 of durability class 3, atmospheric classification category 3, coating class AZ 150 of an approved colour having yield strength of 550 Mpa as in roof covering/wall cladding, fixed with self tapping screws complete all as specified and as directed.

M&L Pre- painted hot dip aluminium Zinc alloy metalic coated plain steel sheet 0.50mm thick ( Total coated thickness), any pattern corresponding to IS 15965 : 2012 of durability class 3, atmospheric classification category 3, coating class AZ 150 of an approved colour having yield strength of 550 Mpa as in roof covering/wall cladding, fixed with self tapping screws as specified complete all as specified and as directed. Note: To be executed for provision of ridges and hips.

Dismantling of wall and ceiling boards (fibre, pulp, insulation etc) or insulation boards/slabs of any thickness including cover fillets complete all as specified and as directed.

S & F 4mm thick Non asbestos fibre cement building boards of size 605x605mm with Anodised aluminium snap grid frame work for false ceiling, flat or sloping fixed or laid/ inserted to timber/GI/Aluminium framework with screws complete all as specified and as directed.

Refixing only ceiling board including Aluminium framework obtain from dismantling against item No 8 here in before fixed with screws complete all as specified and as directed.

S&F 5mm thick PVC sheet fillet of width 35mm for wall paneling inclusive of fixing on to wall to make PVC Frame as per specification and drawing.

S&F Solid PVC Wall Lining consisting of 5mm thick single side prelam PVC sheet inclusive of solvent cement and fixing at site on PVC frame work as per specifications and drawing complete all as specified and as directed.

M & L for Roof treatment of RCC Roof Slab/Parapet Wall over roof in following steps : Surface Preparation: Clean all concrete surfaces free of laitance, dust, dirt, cavities, projecting nibs etc.by grinder and wire brush. Grease should be cleaned using a chemical degreaser and washed with clean water and allowed to dry. Remove all protrusions from concrete surfaces using a fine hair broom finish. Remove moss and lichen manually and treat the surface with a fungicide. Wash the surface thoroughly with clean water and allow it to dry. Standing water must be removed to prevent subsequent compromise of waterproof properties. For undulation of the existing slab shall be rectified with Shrinkage controlled, polymer modified, fibre reinforced cementitious repair mortar Renderoc SP40. Provide and Apply single coat of Lime mortar shall be applied at 1:3 ratio (Lime : sand) admixed with SBR based compound with 5-9 Liters Nitobond SBR Latex for additional layer of waterproofing, repair the covings, pot holes and any unevenness on Lime terrace roof. All around on the roof, at the parapet wall junction, an angular fillet of 50 mm X 50 mm. Free flow precision grout Conbextra GP2 poured within the leak-proof form work in accordance with the mix ratio as recommended in the technical data sheet of the manufacturer and then be sealed with an epoxy putty NITOCOTE VF. The surface is rendered to give aesthetic & visual surface finish complete all as specified and as directed.

Providing and carry out waterproofing treatment to sound, moisture free concrete surface using Nitoproof 600PF - Liquid applied single component pitch free polyurethane coating capable of bridging substrate cracks upto 2 mm. System includes proper surface preparation to remove loose dust, dirt, loose mortar, curing compound etc., and application of Nitoproof WB Primer, Water dispersible epoxy primer followed by two coats of Nitoproof 600PF coverage @ 2.0 kg/m2 to achieve 1.5 mm WFT in two coats followed by laying of separation layer of 120 gsm non-woven geotextile layer before carry out protection screed etc. complete including all tools and tackles as per manufacturer’s specification. Note: (i) Nitocote 600PF cured material shall be having crack bridging of 2 mm, Elongation (ASTMD 412) – 500 - 700 %, Tensile Strength (ASTM D412) – 2.5 N/mm2, Recovery from Elongation (ASTM D412) – 95 %, 85% Solid Content, Tear Resistance (ASTM D624) – 15 Kn/m, Shore A Hardness (ASTM D2240) – 60, Water vapour transmission- 0.6 g/m2/hr, Water Permeability @ 5 Bar (BS EN 12390)-Nil, Service Temperature – -40°C to 70°C, Flash Point > 70 °C, Viscosity-60p, Specific Gravity-1.5. The item rate shall be including of all kinds of labour, tools & tackle, machineries, lead & lift, mathadi charges, curing, wastages, consumable, cleaning, shifting of debris outside the site premises etc. complete as per design, drawing & instructions of EIC. (ii) Cost of 120 gsm non-woven geotextile and 25mm Screed concrete shall be paid separately.