SPECIAL REPAIRS TO ROOF TREATMENT OF BLDG NOS P-125, P-123, P-119 AND P-131 UNDER GE (SOUTH) BANGALORE

Demolition of brick tiles or terracing tiles and screed bed, single layer on roofs, lowering rubbish and stacking for removal all as specified and as directed.

M&L for Screed bed 15 mm thick in cement mortar (1:4) on concrete roof surfaces mixed with integral water proofing compound as per manufacturer's instructions, surfaces finished even and smooth without using extra cement complete all as specified and as directed. (Note:- Water proofing compound shall be measured and paid separately)

Taking down cement plaster on brick or stone walls etc., including raking out joints, hacking for key scrubbing down with water, etc., complete all as specified and as directed.

M&L for rendering 15 mm thick in cement mortar (1:4) on fair faces of brick work or concrete surfaces mixing with water proofing compound finished even and smooth without using extra cement complete all as specified and as directed. (Note - WPC shall be measured and paid seperately)

Demolition of cement concrete in roofs, floors (other than ground floors), beams, staircases, landing, chajjas and similar suspended work, lowering rubbish for removal complete all as specified and as directed.

M&L for Plain Cement Concrete (1:2:4) type B-1 using 20mm graded stone aggregate) as in roof/floor complete all as specified and as directed.

M&L for Extra over rendering or plastering for work in isolated widths or in widths not forming part of general plastering such as in bands, sunk panels, cornices, skirtings, drip moulds and similar work not exc 15 cm in width or girth including cutting to edges, all mitres and stopped ends, etc., complete all as specified and as directed.

M & L for water proofing treatment over RCC roof slab as per following specification all as specified and as directed :- (i) The top surface of roof slab shall be cleaned with wire brush and washing with hydrochloric acid to remove all loose gravel, dirt, oil, grease, loose particles, foreign materials, etc by jet of dry air and clean the surface mechanically or by grinding to make it smooth. (ii) Repair all cracks by cutting "V" groove and fill with Polymer Modified Cement (PMC) mortar in the ratio of ShaliCrete : Cement : Sand (1: 2: 5). (iii) Provide three layers of monolithic, seamess finish having >500% elongation water proofing treatment insitu application with liquid membrane type by using water based UV Resistant Elastomeric PU liquid membrance of Shali Urethance (R) BTD or equivalent specified makes. contd /-

Apply a first coat of ShaliUrethance (R) BTD @ 1KG/Sqm by brush/ roller/ airless spray over a prime coat of Shaliprime BTD @ 400 Gms/ Sqm. When the surface of first coat is still tacky spread non woven Geo textile or Fibre glass tissue / scrimp of 45-50 GSM with overlaps of 50mm on both directions and allow it to dry for 10-12 hours. (iv) Apply a second coat of ShaliUrethance(R) BTD or equivalent of other specified makes in two layers @ 1Kg/Sqm for each layer for final DFT of 1500 micron in two coats by brush /roller / airless spray perpendicular to the first coat for cross linkage as per te manufacturer's instructions. (v) Water proofing treatment shall be executed through Manufacturer's authorised applicators only.

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