Spl repair to roof treatment work at Block No 59 and 60 at FAFA Thimayya under GE(East) Jalandhar Cantt

Demolition of brick tiles single layer as in roof covering, complete all as directed by Engr-in-charge.

Demolition of mud in roofs any thickness including plastering and leeping (whether full thickness removed or only a part thereof), complete all as directed by Engr-in-charge.

M&L for PCC (1:2:4) type B-0 (using 12.5mm graded crushed stone aggregate) as in benching, roof padding, roof kerbs or mud stops, coping etc rounded or chamfered on edges, complete all as specified and as directed.

M&L for 10mm thick cement plaster in cement mortar (1:3) mixed with integral water proofing compound in the proportion recommended by manufacturer, on concrete roof surfaces finished even and fair, including cleaning the roof top by scraping down with water etc, complete all as specified and as directed. (WPC shall be measured and paid separately under appropriate item of this BOQ).

Cleaning the surface and made free of dirt, foreign particle, laitance followed by grinding all all protrusion to make surface modulated. Thereafter, inspection for cracks on the surface caused by thermal expiation contraction. Cutting the grooves with suitable cutter machine in V-groove filled with repairs mortar/ microconcrate/ general purpose grout as recommended proportionally as per recommendation of manufacture. Making of Gollas at all the corners with polymer modified mortar (1:4) cement sand with 3.5% acylic of cement weigh, complete all as directed by Engr-in-charge.

Supply and applying high build elastomeric waterproofing coating based on pure hydrophobic polyurethane cold applied of spray/brush applied, membrane with an elongation of 280% and tensile strength of 2.7N/mm2 as per ASTM D 2370, crack bridging ability of 3mm, no leakage upto 5 bars of water pressure as per DIN 1048, min 88% solid content. The system includes final base preparation, epoxy primer 1:1 (Resin; harder) application with 100% water dilution and Pure polyurethane application in 2 coats with a total min consumption of 1.25 kg per Sqm. Application should be done with Graco sprayer by a company authorised applicator”, complete all as specified and as directed.

M&L for 40mm thick brick tiles laid on mud/cement surface and joints grouted flush in cement mortar (1:3) mixed with 5% of crude oil by weight of cement, complete all as specified and as directed.

Ditto all as per item No. 7.00 above, but except tiles, complete all as specified and as directed.

Demolition of brick work as in walls/parapet wall,s removing grass fungus weed, roots of trees completely, grown on roof/wall surfaces, complete all as directed by Engr-in-charge.

M&L for brick work with sub class 'B' old size bricks straight or curved on plan exc 6 M mean radius built in CM (1:6), complete all as specified and as directed.