SPECIAL REPAIR TO ROOF TREATMENT OF BLDG NO P-286 P287 P-289 P-292 P-294 P-295 P-296 AND P-297 AT FASF RAIWALA IN RAIWALA MIL STN

Demolition of existing roof treatment i.e APP membrane incl cement screed, brick tiling incl mud mortar or lime concrete and open up RCC roof slab including picking, sweeping cleaning with wire brush and washing down with Removal of existing roof treatment i.e APP membrane, brick tiling incl mud mortar and open up RCC roof slab including picking, sweeping cleaning with wire brush and washing down with water to remove dust, dirt to get surface free of laitance , scales, oil or any other loose material complete all as specified and directed.Note :- (a) The work is required to be carried out at non-accessible roof for double storey . The contractor shall make arrangement of scoffolding,safety & security of workers and arrangement for approach to roof. (b) The rates quoted shall deemed to be included for these items.

M&L PCC 1:2:4 type B-0 (using 12.5 mm graded stone agg) mixed with liquid water proofing compound (mixed as per manufacturerinstruction and finishing the surface even and smooth without using extra cement as in roof padding including making the V-groov on top surface 10 mm deep and filling solidly with a hot mixture of bitumen and clean dry sand in the ratio of 1:1 by weight complete all as specified and directed. Note :- 1. Liquid water proofing compound will be measured and paid seperately. 2.The work is required to be carried out at non-accessible roof for double storey . The contractor shall make arrangement of scaffolding, safety & security of workers and arrangement for approach to roof. The rates quoted shall deemed to be included for these items.

M&L for one coat of cement slurry admixed with acrylic bonding compound SBR Latex liquid polymer (slurry will be prepared as per manufacturer instruction as to be used for bonding of new concrete/ mortar to old surface complete all as specified and directed. Note :- (i)The work is required to be carried out at non-accessible roof. (ii)The contractor shall make arrangement of scaffolding,safety & security of workers and arrangement for approach to roof .(iii) The rates quoted shall deemed to be included for these item.

M&L for water proofing treatment to non-accessible roof slab with APP based modified polymeric membrane as per manufacturer’s instructions with following course of description below :- (a) Applying evenly a tack coat of industrial bitumen 85/25 @ of 1.2 Kg per sqm including cleaning the surfaces. (b) Providing APP based 5 layer polymeric membrane minimum weighing 3.6 Kg/ Sqm and minimum 3 mm thick reinforced with polyester non-woven fabric (weight not less than 150 gms/sqm) centre core, laid on primed surface by torced applications as per the manufacturer's instructions with side over lap of 75 mm and end overlap of 100 mm. All overlap joints shall be sealed thoroughly by thermo fusing both the membrane layer (torching overlap by propane or butane gas torch ) and sealing it with the help of hot trowel. The overlap joints shall be made as a monolithic layer. (c) Apply two coat of bituminous aluminium paint @ 0.20 Kg/Sqm over APP membrance. Note : 1. The work of water proofing treatment shall be got executed through authorised applicator of the manufacturer only. 2. The work is required to be carried out at non-accessible roof slab for double storeyed. The contractor shall make arrangement of scaffolding, safety and security of workers and arrangement for approach to roof . The rates quoted shall deemed to be included for these items.

Supply only integral water proofing compound (Liquid type) complete all as specified and directed.

M&L for PCC (1:1.5:3) type A-0, using 12.5mm graded stone aggregates, as in concrete angle-fillets with a radiaus of 75 mm shall be provided at junctions between roofs, floor and vertical faces of walls (parapet, pillar for water tank staging and sunken floor) around obstacles such as pipes, chimney stacks etc. and other similar situation to ease up about corners mixed with integral water proofing compound as per manufactur direction complete all as specified and directed. Note :- Liquid water proofing compound shall be measured and paid seperately.

M&L RCC 1:2:4 type B-0 (using 12.5 mm graded stone aggregate) in Chajjas/fins /RCC facia of roof slab & chajjas for minor repair including necessary formwork and one coat of SBR latex as bonding of old concrete to new concrete Complete all as specified and directed.

Taking down cement plaster on brick or stone wall surfaces including glazed tiles wherever exists including raking out joints, hacking for key and scrubbing down with water and removing unseviceable materials out side MoD land complete all as specified and as directed.

M&L for 15mm thick plastering on fair faces of brick wall in two layers, Ist layer 10mm thick in CM (1:6), and IInd layer 5mm thick in CM (1:4), surface finished even and fair complete all as specified and directed.

M&L for 15mm thick plastering on fair faces of brick work or concrete surfaces in cement plaster (1:6) fininshed surface even and fair complete all as specified and directed.