Refurbishment and waterproofing jobs for roof slab, walls, expansion joints etc for various buildings at TAPS 3and4.

Removal of existing APP Membrane from roof including removal of bitumen primer , areas around exhaust fans, around roof periphery in any building as decided by Engineer, disposal of same as identified and finalized by Engineer inclusive of labour, tools, tackles, additional arrangement for removal as applicable , bringing down the same to ground level, loading, transportation by mechanical transport and unloading the same at identified location inside TMS boundary

Removal of existing Bitumen sprayed over Screed concrete from roof slabs of main plant buildings, initially by scrapping with floor scarifier , mechanical tools and finally by grinding and cleaning of surface, including removal of bitumen from joint / cracks in screed concrete, cleaning of joints as per specifications, disposal of debris/ dust at identified location within TMS boundary and to the satisfaction of the Engineer. The surface prepared shall also be certified, as acceptable for application of water proofing membrane system in writing by the manufacturer of Polyurethane Water Proofing Membrane to be applied at site. The rate shall be inclusive of all labour, tools and consumables etc.

Testing of screed concrete for its soundness by conducting pullout strength test for screed @ 1 no/ maximum 30 sqm area (subjected to minimum one test/ building roof) or as decided by the Engineer. The test shall be done in presence of Manufacturer for Water Proofing system. The quoted rate shall include providing the testing machine and all other tools and skilled manpower for conducting the test.

Testing of screed concrete for its soundness by temping in complete area and removing of all loose concrete and disposal of debris within TAPS-3&4 boundary as finalized by the Engineer, as per technical specification, inclusive of all tools , labour, bringing down the material to Ground level, Loading, Transporting and Unloading. No extra payment shall be made for concrete testing by temping under this item. Note- Only quantity of removed concrete shall be paid. This item also covers the cost of removal of screed which fails soundness test in pullout test

Supply of material and filling of patches where loose screed/ concrete is removed, filling of local depression to maintain proper slope for rain water drainage or wherever required as directed by Engineer using dual shrinkage compensated, flowable micro concrete as per technical specifications, including all labour and materials etc. The payment shall be made based on the quantity of dry micro concrete used for repair.

Providing and laying in position specified grade of plain cement concrete, excluding the cost of centering, shuttering, finishing at all level including all leads and lifts (1 cement : 1.5 sand : 3 graded stone aggregate 20 mm nominal size )

Providing, centering, shuttering Form work using steel plates, timber planks for all types of structures including necessary strutting, proping, staging, supports, bracings etc. and deshuttering the same after the specified time all as per drawings, specifications and as directed by the Engineer-in-charge at all levels

Opening Cracks /Cutting V grooves in screed , cleaning and filling cracks/ joint / grooves in screed using single component PU based elastomeric joints sealant .The rate shall be inclusive of all labour, material, tools and consumables etc. Payment will be made as per consumption of sealant