tender for improvement to smq no. p-21 at af stn najafgarh under ge (af) tughlakabad-- 1 dismantling of old brick tiles or terracing tiles, single layer on roofs complete all as specified and directed by engr-in-charge. 2 demolition of existing mud in roofs of any thickness including plastering, old app sheet and leaping, whether full thickness removed or only a part there of, and removing mud, all rubbish material outside of defence land as directed by engr-in-charge. 3 m&l for pcc (1:2:4) type b-0 using 10/12.5 mm graded stone aggregate laid over roof slab after applying cement slurry for filling undulationations finished even and smooth without using extra cement complete all as spd and directed. 4 m&l for applying cement slurry over existing roof surface @ 3 kg/sqm complete all as specified and directed. 5 m&l for 15mm thick rendering in cement mortar 1:4 (mixed with wpc @ 2% by weight of cement) to brick/concrete wall and roof surfaces finished even & smooth (without using extra cement) with water proofing compound at the rate of 3% by weight of cement or as per the manufacturer’s instructions complete all as specified and directed by engr-in-charge.note: wpc shall be measured and paid for separately 6 supply only internal water proofing compound complete all as specified and directed by engieer-in-charge. please enable macros to view boq information