REPAIRS TO ROOF TREATMENT, SUNKEN FLOOR, REPLACEMENT OF INTERNAL WATER SUPPLY PIPE LINE AND SANITARY FITTINGS IN CERTAIN BLDGS AT SRC IN 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.

Taking down cement plaster on wall of any description including racking out joints hacking for key and scrubbing down with water including removal of rubbish off from the premises complete all as specified and directed.

M & L for brushing neat cement slurry (@ 3 Kg of cement per Sqm) for bonding of old concrete surface to new concrete, 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 for cutting 75 mm wide and 65 deep in brick wall/PCC block/RCC surface any location shaping horizontal face groove filled with PCC (1:2:4) type B-0 (using 12.5mm graded crushed stone aggregate) with and including chemical compound mixed in proportion 200 mili litre per 50 Kg of cement or as per manufacturer's instructions laid when concrete is still green, complete all as specified and as directed. Note:Water proofing compound will be measured and paid seprerately under respective item of "BoQ".

M&L Rendering 10 mm thick in cement mortar 1:4 on concrete / brick surfaces with liquid water proofing compound @ 200 ml/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 seperately .

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

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 roof treatment in repair by complete removel of existing old treatment and treated with following specifications :- (a) Priming plastered surface of roof by applying oil based bitumen primer @ 0.30 ltr/Sqm on plastered surface till the surface is properly impregnated. (b) Applying APP based polymeric membrane 3mm thick and weight should not less than 3 kg/sqm and sealed the joint with torch application. (c) Applying a coat of hot air blown grade bitumen of grade 85/25 @ 1.2 Kg/ Sqm.

M&L ceramic cool roof tiles with grey cement and no pigment 30 cm x 30 cm x 8 mm thick , laid over 10mm thick screed bed in CM 1:, set jointed and pointed in neat cement slurry in floors complete all as specified and directed.