SPECIAL REPAIR/REPLACEMENT OF ROOF TREATMENT CHAJJAS, PARAPET WALLS AND CONNECTED MISC WORKS AT LEKHANAGAR, RAMGARH CANTT

Taking down existing complete roof /parapet treatment any thickness including mud phuska, plastering, leaping plaster of any thickness cuting & up rooting tree roots/Vegitable growth & removing the debris from the premises upto 500m from the MOD land including cleaning/washing down and keeping surfaces clean complete all as specified and as directed.

M & L for plain cement concrete 1:2:4 ,type B-0 (using 12.5mm graded crushed stone aggregate) mixed with integral water proofing chemical compound, mixed in proportion 200 milli litre per 50 Kg of cement as in padding, benching, sunken portion etc., on roof surface for correcting/making proper slope on roof, etc.,complete all as specified and directed .(Note:Water proofing compound shall be measured and paid seprerately under respective item of "BoQ")

M & L of rendering 10 mm thick in cement mortar 1:4 on concrete/brick surfaces with liquid water proofing compound @ 200ml/50 kg per bag of cement or as per manufacturar instruction finished even and smooth without using extra cement over roof/sunken slab/wall complete all as specified and directed. Note: water proofing liquid will be measured and paid separately.

M & L for application of water proofing treatment using APP modified roof membrane over non accessible/ non approachable RCC roof slab / chajjah / canopy / parapet wall( horizontal/vertical surface) to be executed through approved applicator of the membrane manufacturer/authorized applicator of the manufacturer with following specification etc complete all as specified and directed :- (a) Cleaning existing surface properly with wire brush & applying 10 mm thick plaster /rendering in cement mortar (1:3)mixed with integral water proofing chemical compound, mixed in proportion 200 milli litre per 50 Kg of cement (b) Applying approved bituminous based primer( conforming to IS: 3384-1995) @ 0.50 litre / Sqm manufactured by the same agency as that of APP membrane with a density 0.87-0.89 Kg per liter at 25 degree centigrade on prepared surface (c) Laying not less than 3mm thick APP (Atactic polypropylene Polymer modified prefabricated membrane) modified water proofing membrane weighing not less than 3.00 Kg/Sqm reinforced with non woven polyster fiber weight not less than 160gms/Sqm using butane torch by torch application with 10cm side laps and 15cm end lap. Physical property of membrane shall be as under :- (i) Membrane weight not less than 3.00 Kg/Sqm. (ii) Non woven polyester weight not less than 160 gms/Sqm. (iii) Softening point of membrane not less than 150 degree Celsius. (iv) Joint tensile strength-longitudinal not less than 150 Kg / Sqcm and transverse not less than 450 Kg /Sq.cm at 230 degree Celsius. (v) Tear strength - longitudinal not less than 300 N & transverse not less than 250N. (vi) Elongation of reinforcement not less than 30%. (vii) Impermeability under water pressure not less than 3 Kg/Sqcm. (d) APP modified polymeric membrane shall be laid using butane torch by Torch application with minimum 10cm side overlap and 15cm end lap. (e) Applying two coat of bituminious based Aluminium Paint @ 0.3 Kg /sqm over APP Membrane.

M & L for brushing neat cement slurry (@ 3 Kg of cement per Sqm) mixed with water proofing liquid in the proportion, water proofing liquid, water cement (1:4:7) or as per manufacture instructions for bonding of old concrete surface to new concrete, complete all as specified and as directed.

M & L for application of water proofing treatment using APP modified roof membrane over accessible/ approachable RCC roof slab / chajjah / canopy / parapet wall( horizontal/vertical surface) to be executed through approved applicator of the membrane manufacturer /authorized applicator of the manufacturer with following specification etc complete all as specified and directed :- (a) Cleaning existing surface properly & apply 10 mm thick plaster /rendering in cement mortar (1:3) with WPC as per manufactures instructions (b) Applying approved bituminous based primer( conforming to IS: 3384-1995) @ 0.30 litre / Sqm manufactured by the same agency as that of APP membrane with a density 0.87-0.89 Kg per liter at 25 degree centigrade on prepared surface er . (c) Laying not less than 3mm thick APP (Atactic polypropylene Polymer modified prefabricated membrane) modified water proofing membrane weighing not less than 3.00 Kg/Sqm reinforced with non woven polyster fiber weight not less than 160gms/Sqm using butane torch by torch application with 10cm side laps and 15cm end lap. Physical property of membrane shall be as under :- (i) Membrane weight not less than 3.00 Kg/Sqm. (ii) Non woven polyester weight not less than 160 gms/Sqm. (iii) Softening point of membrane not less than 150 degree Celsius. (iv) Joint tensile strength-longitudinal not less than 150 Kg / Sqcm and transverse not less than 450 Kg /Sq.cm at 230 degree Celsius. (v) Tear strength - longitudinal not less than 300 N & transverse not less than 250N. (vi) Elongation of reinforcement not less than 30%. (vii) Impermeability under water pressure not less than 3 Kg/Sqcm. (d) APP modified polymeric membrane shall be laid using butane torch by Torch application with minimum 10cm side overlap and 15cm end lap. (e) Applying two coat of hot air blown grade bitumen of grade 85/25 @ 1.20 Kg /sqm over APP Membrane complete all as specified and directed

M & L for machine pressed cement concrete tiles 25cmX25cm X 22mm thick/ 30 cm x 30 cm x 22 mm thick, set, jointed and pointed in neat cement slurry with grey cement and no pigment ,laid over and including 15mm thick cement screed bed in cement mortar (1:6) complete all as specified and directed.

Demolition of cement concrete (un reinforced ) in roofs, floor, beams, staircases, landing, chajjas and similar suspended works and removing excavated material outside of MoD land, complete all as directed by Engr-in-Charge.

M & L for RCC as in Chajjas type B-0 (12.5 mm graded aggregate) including necessary form work complete all as specified and as directed.

M & L for RCC as in fins, fascias, louvres, parapets, and railing exc 60cm in height, newels, balustrade, and like type B-0 (12.5 mm graded aggregate) including necessary form work complete all as specified and as directed.