General Maintenance, Water proofing and leakage rectification works of 30 stations and Charkop Metro depot of line 2A and 7.

INJECTION GROUTING - INJECTION GROUTING SYSTEM FROM NEGATIVE SIDE Providing and applying single Component PU Injection Foam Grout of BASF / MBCC Make, for stopping small to mid-volume water ingress in overhead structures and filling water-bearing voids. The leftover Packing of Cracks, Gaps, Holes & Voids shall be done using Epoxy Putty and / or structural polymer modified repair mortar using BASF / MBCC Material. Maximum Hole diameter of 75 mm.

INJECTION GROUTING - INJECTION GROUTING SYSTEM FROM POSITIVE SIDE Providing and applying single Component PU Injection Foam Grout of BASF / MBCC Make, for stopping small to mid-volume water ingress in overhead structures and filling water-bearing voids. The leftover Packing of Cracks, Gaps, Holes & Voids shall be done using Epoxy Putty and / or structural polymer modified repair mortar using BASF / MBCC Material . Maximum Hole diameter of 75 mm.

INJECTION GROUTING & Nozzle Fixing - Injection Grouting: Providing and applying injection grouting through the nozzles provided into the cracks/honeycombed areas by suitable grouting pump under pressure till the refusal including all labour, supervision, tools and tackles and transportation etc., complete as per specification and as directed. Low viscous (200 - 300 CPS) Epoxy Resin like Prostruct PS LV Epoxy Resin of IPSS or equivalent material

INJECTION GROUTING & Nozzle Fixing - Nozzle Fixing: Drilling 12 - 16 mm dia holes at honeycomb portions / voids / construction joints cracks etc. spaced at specified spacing and placing 8 - 12 mm dia. nozzle of length 75 mm suitable for grouting into a 150 mm deep hole using polymer mortar including cutting of nozzle after the grouting and finishing with polymer mortar etc. complete.

Surface Preparation - Surface preparation includes cleaning and scrubbing with brush and water to remove all dust, fungus, cement, paints etc, washing with water all complete

Epoxy Based Anti-Carbonation Coating - Providing, and applying a high build, epoxy based anticarbonation coating as per the recommendation of the manufacturers. Item rate inclusive of all materials, labours, supervision, tools, tackles, transportation etc., complete as per specification and as directed

waterproof coating - Providing and applying high performance waterproof coating to external wall of lift/station building/depot building to prevent the seepage of water, dampness to the interior side with the warranty 5 year with the minimum thickness of 150 micron. Above work is inclusive of below work complete in all manner. 1) Providing and applying waterproof coating with the help of skilled manpower, all material, PPE’s, tools, ladder, etc 2) Arrangement of supported/ suspended/ ariel lifter scaffolding etc. to execute work as per requirement. 3)Surface preparation for application of waterproof coating. 4)Cleaning of working space after the completion of work. 5) Warranty of work – 5 year

EXTERNAL FAÇADE/FALSE CEILING WORK - Aluminium half elliptical profiled louver 150 Fixed System: Supply and fixing of Half Fin fixed louver 150 consists of elliptical profiled louver fin skin with crowning manufactured out of 0.7mm thick enamelled corrosion resistance aluminium Alloy AA3305 and formed on high speed high precision DALLAN COMBI multi stage roll forming system or equivalent. The roll formed fin profile is mechanically fixed between aluminium extruded press plate and continuous assembly channel. The ylon end caps shall be provided on both sides of the fins. The louver fins will be provided in the module of 300mm c/c. The louver fin skin shall be coil coated finish suitable for exterior applications. The coil is coated on a continuous paint line double baked and shall be stove enameled and finished with special three layered coating system (consisting of first a conversion layer of thickness 800-2000mg/sq.mtr, a polyurethane basecoat of 16-20 microns, and a special top coat of polyamide particles of 8-12 microns thick to provide excellent abrasion and damage resistance) in a continuous coil coating process of the approved color on the exposed side and reverse side with epoxy.Paint Performance Criteria: Coating thickness shall be 24 to 32 μm and determined by ECCA T1. Colour difference shall be <0.70 unit and determined by ECCA T3. Pencil hardness shall be >H and determined by ECCA T3. Corrosion resistance shall be 3 years under creep<2mm (Outdoor Exposure) and determined by ECCA T19. UV Ray Resistance shall be determined by ECCA T19 No crack/flacking/blistering/chalking for minimum period of 5 years. Color change shall be <5 Units, gloss loss<50%. Humidity resistance as per ISO 6270, 1000 Hours blistering < B2S2. Salt/Acetic Acid Spray Test shall be as per ASTM G85, 1000Hrs. under creep <2mm. The fin is fixed to substructure with installation bracket and necessary screws. The factory assembled louver fins of 150mm projection and as per the length width 70mm width shall be fixed mechanically to installation frame in the module of 300mm c/c. The louver fins shall be provided in 300mm module in varying lengths as per site requirement subject to a maximum of 5 Mtrs. The installation frame shall be mechanically fixed to a structure 150mm distance from the fin panel edges and a c/c maximum distance of 2000mm in between subject to wind load. The erected installation frame shall be aligned within the tolerances of +/- span/1000 of plumb line and level with a non-cumulative tolerance of a maximum of 2mm. (Note- Sub-structure will be paid in separate item). Green-pro certification: For LEED certification by the Indian Green Building Council (IGBC) and ISO 9001:2015 Quality Management System Certification.

EXTERNAL FAÇADE/FALSE CEILING WORK - Providing and fixing 50x100 baffle ceiling ( 50mm Width & 100mm Height) system comprising of U shape panels. Baffle panels shall be made out of 0.7-0.9 mm thick electro galvanized steel material in lengths of up to 4000mm. The Coil should be stove enamelled on a continuous application for pre-treatment. The coils to go through 4 stages of pre-treatment, three times oven baked through conversion coating, priming and finish coat ensuring superior adhesion, high corrosion resistance and good colour stability. The coils to be painted on both sides after degreasing. Inside surface to have a primer of 5 microns and a coat of natural colour of 5 microns, exposed surface to have a primer of 5 microns, binder of 5 microns and topcoat of approved colour of 15 microns. Baffle Ceiling panels shall be mounted on slotted galvanized grid profile of minimum 2mm thickness in a module of 150mm. Baffle grid shall be suspended and supported by means of 6mm dia threaded suspenders at a distance of 150mm from the edge and 1200mm c/c. Baffle fixing brackets shall be used to keep the ceiling in correct place for the levelling purpose. Baffle panels shall be coil coated in a desired specification. Baffle ceiling system shall be installed in compliances with manufacturer’s technical installation brochure and manual.