STRUCTURAL REPAIRS AND MAINTENANCE WORKS INCLUDING REPAIRS TO VARIOUS CAISSONS, MACHINE ROOMS, DUCT AREAS, SOFT PATCHES, DRAIN COVERS, HARDSTANDING, MICRO-CONCRETE REPAIRS, ANTI-CARBONATION COATING, AND PAINTING WORKS AT C.G. JETTY, I.B.W. JETTY, ACD

Demolition of plain cement concrete of any description and in any position not other wise speifically provided for and removing rubbish off the premises etc complete all as specified and directed. Note : The place of disposal shall be find out by contractor.

Material and Labour for Cement concrete work in pavement/hard-standing of flexural strength 40 kg/per square centimetre in field using 400 kg of cement per cubic metre, thickness of concrete not exceeding 200 mm, including use and waste of side forms for laying pavement/hard-standing in bays between joints, complete all as specified and directed.

Material and Labour for forming contraction (Dummy) joints 65 mm deep x 10 mm wide, filled with sealing compound Grade 'A', complete all as specified.

Material and Labour for Plain cement concrete type B-1, 1:2:4 (20 mm graded stone aggregate), in sub-floors, sub-bases, floors and pavings, etc., finishing the surface even and fair (without using extra cement) complete all as specified and directed.

Supply only integral water proofing compound complete all as specified and directed.

M&L for brushing neat cement slurry with 3Kg of cement per square metre all as specified and directed.

M&L for rendering 20 mm thick cement plaster in CM (1:3) on roof top surface finished even and fair including WPC by weight of 3% of total cement content, priming @ 0.8 Kg per Sqm of finished concrete surface complete and an evenly a coat of cold bituminous at 1 Kg per Sqm and applying seating cloth over cold bituminous , finally applying paving bitumen of any penetration at 1.5Kg per Sqm all as specified and as directed. Note : WPC will be measured and paid separately

M&L for water proofing treatment to RCC roof slab all as specified below and as directed:- a) Apply one coat of bituminous primer @0.25 Kg/Sqm. (b) Apply a coat of blown type bitumen grade 85/25 heated to working temperature of 180 degree centigrade and applied at 1.20 Kg/Sqm of the surface area. (c) Laying APP polymer modified membrane 4mm thick with non woven polyester reinforcement weighing not less than 4.00 Kg/ Sqm applied by torch application method.The APP membrane shall be laid using torch application method with minimum 100 mm side overlap and 150 mm end overlap and ensure that a constant flow of bitumen is maintained across the whole width of a role and that a bead of bitumen is extruded from all edges to obtain a good seal.The APP membrane shall be taken upto minimum 200 mm on vertical surfaces. All the edges of the membrane shall be sealed with sealant. The rain water gutter portion shall be finished with cement mortar 1:4 to provide requisite slope towards rain water pipe outlet. (d) Apply a coat of blown type bitumen grade 85/25 heated to working temperature of 180 degree centigrade and applied at 1.20 Kg/sqm of the surface area. (e) Apply two coats of solar reflective bituminous aluminium paint @ 0.10 kg /sqm/coat Note- Work shall be carried out through authorised applicator of manufacturer only, a certificate in this regards shall be kept in records. Note : 1) Quoted rate shall incl disconnecting and refixing of existing AC units/PVC water tank incl necessary fittings if damaged. 2) Work shall be carried out through authorised applicator. 3) Work shall be carried through a stage passing register and every step shall be listed and documented.

M&L 150mm thick PCC 1:2:4 type B-I using 20mm graded crushed stone aggregates as in floor finished cement concrete surface even and smooth using extra cement complete all as specified and directed by Engineer-in-Charge.

Demolition of reinforced cement concrete of any description and in any position not other wise spcifically provided for and removing rubbish off the premises etc complete all as specified and directed. Note : The place of disposal shall be find out by contractor)