Provision of Auditorium roof over existing truss system at NISER Jatani

Providing, fitting and fixing galvalume Sandwitch panel (TATA make or equivalent) 0.55mm thick at top and 0.5mm profiled Aluminium sheet at bottom, of approved colour with Synth of minimum 50 mm thick having clip on arrangement or spacer block other than wood as per design , drawing and direction of Engg. - in - Charge complete including cutting to required shape and size including all consumables, ridge fixing etc complete. Above the sheet there will be a GI flat of 25 mm width and 5 mm thick along the direction of purlin. Note: 1. The sheet should be fixed with purlin by 6mm diameter or more GI J hooks/ L hooks/ U-bolt as per site requirement. 2. There should be spacer block with in the sheet where there will be J hooks/L hooks crosses through sheets. 3. Minimum 3 nos of J hooks/L hooks should be provided per meter length of purlin. 4. The lapping of sheets should be such that there should not water leakage through the sheets. 5. There should be two washers just below the bolts, the bottom one is sealing washer neoprene or bituminous felt and the top washer is 30*30*6 gauge MS washer. 6. During execution of work safety net should be provided all around the work site as well as below the truss to avoid any type of accident.

Dismantling of Galvalume sandwitch panel (Tata Make or equivalent) 0.55 mm thick at top and 0.5 mm profiled Aluminum sheet at bottom of approved colour with TWIGA make glass wool having clip on arrangement as per direction of EIC complete including transportation of dismantled material within 1000 meter or designated place. Note: All safety measures are to be taken before execution of the work as per direction of Engineer-In-Charge.

Providing and fixing APP (Atactic Polypropylene Polymer) modified prefabricated five layer 2 mm thick water proofing membrane, black finished reinforced with glass fibre matt consisting of a coat of bitumen primer for bitumen membrane @ 0.40 litre/sqm by the same membrance manufacture of density at 25°C, 0.87 - 0.89 kg/ litre and viscocity 70 - 160 cps. Over the primer coat the layer of membrane shall be laid using Butane torch and sealing all joints etc., and preparing the surface complete. The vital physical and chemical parameters of the membrane shall be as under : Joint strength in longitudinal and transverse direction at 23°C as 350/300 N/ 5 cm. Tear strength in longitudinal and transverse direction as 60/80N. Softening point of membrane not less than 150°C. Cold flexibility shall be upto -2°C when tested in accordance with ASTM, D - 5147. The laying of membrane shall be got done through the authorised applicator of the manufacture of membrane. 2mm (for corrugated roof sheets). Special care should be given for the areas where the J/L/U hooks passes through the sheets so that no leakage will be there. The test certificates of the products shall be submitted after procurement of material and before execution of works all complete as per drawings, specifications and as per instructions of Engineer-In-Charge.

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