SPECIAL REPAIR TO BLDG NO P-51 (HELIPAD) AT SSB DIAMOND HARBOUR UNDER GE (I) CGN) KOLKATA

Amount

Demolition of cement concrete(unreinforced) above ground floors exceeding 15 cm thickness (below or above ground level) complete all as specified and directed.

Removing excavated material (rocks) not exceeding 50 m and depositing where directed at a level n exc. 1.5 m above the starting point complete all as specified and directed.

M & L for cement concrete (Ready Mix Concrete) works in pavement/ hard-standing of flexural strength 40 kg/per square centimetre, using 20 mm nominal size graded crushed stone aggregate, mixed with non circular synthetic fibre of 0.25% by weight of cement thickness of concrete 25 centimetre or less of concrete complete all as specified and as directed. (Note:- non-circular synthetic fibre shall be measured separately under relevent item).

Supply only polyester triangular fibre as secondary reinforcement, 6/12 mm long with circum circle diameter of 30-35 microns, designed for melting point of 240-260 degree celsius, shall be uniformally mixed at the rate of 0.25% (or at the rate as per manufacturer's instructions) by weight of cement complete all as specified and directed.

Material and labour for forming 25mm wide expansion joint in concrete slab, full depth filled with 22-25mm thick premoulded compressible synthetic filler board as specified and provision of closed cell, medium density, cross linked polythene foam backup road of 30mm dia, over 25mm thick premoulded compressible filler board, priming top 15mm filled with polyurethane/ polysulphide base sealant confirming to BS 5212, BS 4254 and EN 41875-2003, with min MAF +30% complete all as specified and as sdirected and as per manufacturer'r insstruction.

Material and labour for forming contraction joint up to 1/3rd depth of concrete slab using diamond cutter and top 25mm x 8mm wide, providing ploythene backup rod 10mm dia and sealed with polyurethane sealent (min depth of sealent 12mm), priming the sides min MAF + 30% complete all as specified and as sdirected and as per manufacturer'r insstruction.

Material and labour for forming construction joint 25mm deep x 8mm wide using high RPM diamond bit cutter filled with closed cell, medium density, crossed linked polythene foam back up rod of 10mm dia, applying bond breaker tape on top 12mm and filling sealant complying with BS 5212, BS 4254 and EN 41875-2003 min MAF + 30% acomplete all as specified and as sdirected and as per manufacturer'r insstruction.

M & L for preparation of new or previously treated surface and painting lines, dashes, arrows, letters, etc. on roads, pavements and the like exceeding 10 cm wide with road marking paint, confirming to MORTH specification over and including a coat of primer complete all as specified and as directed.

M/S DECON INDIA

BKGL CONSTRUCTION