Repairing the damaged water proofing system in roof terrace and gutter of various building in IGCAR at Kalpakkam for the year of 2027-2028.

Dismantling brick work in cement mortar at all levels by manually / by mechanical means, carefully without damaging adjacent structures including stacking of serviceable materials and disposal of unserviceable materials within 50m lead all as per specifications and directed by the Engineer-in-charge.

Dismantling old weather proofing materials such as brick bat coba or foam and screed concrete at all levels and cleaning the surface including disposal of rubbish to the dumping yard within 50 metres lead all as per specifications and directed by the Engineer-in-charge.

Dismantling weather proofing old bitumen felt or App membrane sheets at all levels and cleaning the surface including disposal of rubbish to the dumping yard within 50 metres lead all as per specifications and directed by the Engineer-in-charge.

Dismantling of RCC works at all levels by manually / by mechanical means, including Cutting and stacking of steel reinforcement bars and disposal of unserviceable materials within 50m lead as per specifications and directed by the Engineer-in-charge.

Providing and laying cement based water proofing treatment with a course layer of broken bricks of various sizes to an average thickness of 100mm over a 20mm thick bed of cement mortar 1:5 using crushed stone sand mixed with water proofing compound, plastering the top layer 12mm thick in cement mortar 1:5 using crushed stone sand, mixed with waterproofing compound, finished smooth with thread marking at 300mm squares (South India water proofing or equivalent, ratio to cement shall be as per manufacturers specification or 2% to be adopted) Note: Suitable guarantee for 10 years is to be provided for this work. This work has to be executed as per the specification and direction of the Engineer-in-charge.

Providing and laying pressed flat clay tiles 230 x 230mm size and 20mm thick tiles on roof slab jointed with cement mortar 1:4 using crushed stone sand mixed with 2% integral waterproofing compound laid over a bed of 20mm thick cement mortar 1:4 using crushed stone sand and finished neat complete all as per specifications and as directed by the Engineer-in-Charge.

Lead charges for lead Exceeding 4 kilometre but not exceeding 5 kilometre

Supplying and fixing in all position of Alkali resistance Glass fibre mesh of Gyproc Fiber Mesh or approved equivalent (4-5mm square aperture or as per specified at site with 145 gsm) fixed with neat cement paste or by manufacturer recommendation fixed below screed concrete with minimum 100mm overlapping at mesh joints and as instructed by Engineer-in-Charge.

Providing plastering in cement mortar 1:4 using crushed stone sand, 20mm thick at all elevations/levels with 2% of water proofing compound or as per manufacturers specification, ‘Impermo’ or approved equivalent make including hacking of concrete surfaces with pointed tool, scaffolding, finishing, curing, all as per specifications.