OT-54/2026-27 of SE/GCC-II/CNI

Dismantling of the PCC & tiles and clearing the debris from site including all labour charges, T & Ps etc., complete.

Surface preparation to receive the waterproofing coating, dirt free or any other form of foreign matter including old waterproof coatings which might affect adhesion. Grind the surface mechanically using floor grinders and vacuum clean the surface. All the cracks to be treated by providing V grooves and filled with Polymer crack sealer. including cost of all materials, labour, consolidation, lead, lift, etc., complete as per specification.

Providing and applying of injection PU grouting with Hydrophobic grout. PU Grouting by Drilling holes and fixing of non-return grout ports. PU injection(1K) is a hydrophobic grout based on polyurethane. Upon contact with water to reacts and form a closed cell rubber-like foam to expand including cost of all materials, labour, consolidation, lead, lift, etc., complete as per specification.

Providing, supplying and applying PU Waterproof coating by single component mild root resistant elastomeric pitch free Polyurethane membrane system having>400% elongation and solid content of 85% and free from bitumen with hardness 60+5 Shore A (ASTM D2240) , tensile strength >2N/mm2 (ASTM D412), Crack bridging capacity up to 2mm (ASTM C1305) etc. The vertical surface/ horizontal surface of the concrete shall be taken up for thorough surface preparation with air blowing and mechanical removal of debris, laitance, etc. It shall be waterproofed with a mechanical spray application or squeegee or roller application at 2 kgs / sqm to achieve a minimum DFT as specified below, of Fosroc Chemicals single component liquid membrane The water absorption < 1% . The water vapour transmission shall be 0.6g/sqm/hr. Proposed membrane will have excellent adhesion more than 50N and shore A hardness – 60. Colour shall be green. Any laitance present on the surface must be removed mechanically.

Providing and fixing of GI weld mesh of 3mm dia. And 100mm square as reinforcement for the concrete, Screed concrete with M20 screed mixed with polypropylene fiber @ 900 gms/cum of cement and finishing the surface by power trowel including other materials, labour, lead, lift etc, complete, and as directed by the Engineer at site.

Supplying and applying of Roof finish with high SRI, membrane protected from UV rays with two coats of Fibre reinforced acryclic based coating BRUSHBOND ROOF GURAD PREMIUM @ 3 coat including cost of other materials, labour, lead, lift etc, complete, and as directed by the Engineer at site.

Providing and sealing the expansion joints of 50mm wide and 25mm depth with Elastomeric joint sealing using Pourable Grade after the concrete surface with horizontal/vertical surfaces with necessary backer rod of 60mm dia. (MYK) Tap Fixing Over and above provide Elastomeric Compression seal made up of neoprene / EPDM/ High quality rubber of required screed thickness with required epoxy adhesive for fixing including heat welding for lapping and extensions The top surface of the sealant shall be provided with any one brand of 150mm wide sealed on the sides of expansion joint including cost of other materials, labour, lead, lift etc, complete, and as directed by the Engineer at site.

SGST

CGST

GST for bidders outside TamilNadu (IGST)