REPAIRS TO RCC ROOF PERIODICAL SERVICES TO CERTAIN BLDGS IN MAIN CAMP GJ AND OMQ AREA AT AFS TAMBARAM

Amount

Demolition of unreinforced cement concrete in above ground floors and pavings not exc 15 cm thickness complete all as specified and as directed.

M&L for Plain cement concrete 1:2:4 type B1 (using 20mm graded stone aggregate) as in in roof padding,kerbs or mud stops, rounded or chamfered on edges complete all as specified and as directed.

Removing existing water proofing treatment any type like plastering, PCC, Roof tiles, APP membrane etc., including removal of debris, old APP membrane etc.to outside MD land and providing water proofing treatment on horizantal or vertical surfaces by applying oil bound bitumen primer @ 0.20 Kg/Sqm and providing 4mm thick APP modified water proofing membrane weighing not less than 4 Kg/Sqm reinforced with non woven polyster matt weighing not less than 160gm/Sqm including minimum 10cm side lap and 15cm end lap torch sealed and bonded and applying a coat of blown grade hot bitumen 90/15 over and below the membrane @ 1.20 Kg/Sqm and finally after drying over the membrane finished with solar reflective bituminous aluminium paint @ 0.10 Kg/Sqm over plastered RCC roof slab/parapet after cleaning the surfaces by removing dust, dirt etc., complete all as per manufacturers instruction and as directed (Note: Plastering will be measured and paid seperately)

M&L rendering with CM 1:4, 15 mm thick with water proofing compound in roof finishes complete all as specified and directed Note :(WPC will be measured and paid separately)

Supply only Integral water proofing compound

Taking down old cement plaster including racking out joint hacking for keys and scrubbing down with water on wall/ceiling all as specified and directed.

M&L Rendering 15mm thick on brick/ concrete surfaces with cement mortar 1:4 finished even and smooth but without using extra cement all as specified and as directed

S&F Self Adhesive water proofing flash bond membrane 100mm wide of make:Bostik India fixed to joints of AC/Ridge portion/over surfaces of galvalume roof sheets/concrete surfaces etc up to 30m height all as specified and as directed by Engineer-in-charge, incl necessary scaffolding and removal of the same after completion of the job.

Material and labour for preparation of old surfaces (plastered/ unplastered) of walls/ pillars / cornices by brooming down or steel wire brushing, scraping down smode. Soot, moulds, moss & efflorescent salts, oil & greasy spots etc including applying white cement based putty where required for filling to depressions to make the surface even and smooth, upto entire satisfaction of Engineer-in-charge, after preparing the surfaces applying one coat of weather proof exterior emulsion paint (wheather coat Apex, 100% exterior grade), as per existing or as approved tint/ colour complete all as specified and as directed at site.

Material and labour for preparation of old decorated surfaces (plastered/ unplastered) of walls/ pillars/ cornices by removing / scraping down all loose particle, smoke soot, moulds, moss & efflorescent salts, oil & greasy spots etc with using broom/ steel patti/ wire brush/ sand papering or by any other mean, washing down with water including applying white cement based putty where required for filling to depressions/ nail holes/ light cracks etc and to make surface even and smooth, upto entire satisfaction of Engineer-in-charge, and after preparing the surface smooth applying one coat of cement base paint with paint brush or roller brush, as per existing or as approved tint/ colour complete all as specified and as directed.

Material and labour for preparation of old decorated surfaces (plastered/ unplastered) of ceiling by removing/ scraping down all loose particle, smoke soot, moulds, moss & efflorescent salts, oil & greasy sopts etc with using broom/ steel patti/ wire brush/ snad papering or by any other mean including applying white cement based putty where required for filling to depressions/ nail holes/ light cracks etc and to make the surface even and smooth, upto entire satisfaction of Engineer-in-charge and after preparing the surface smooth applying one coat of white wash with paint brush complete all as specified and as directed.

Material and labour for preparation of old decorated surfaces (plastered/ unplastered) of walls/ pillars/ cornices by removing/ scraping down all loose particle, smoke soot, moulds, moss & efflorescent salts, oil & greasy sopts etc with using broom/ steel patti/ wire brush/ snad papering or by any other mean including applying white cement based putty where required for filling to depressions/ nail holes/ light cracks etc and to make the surface even and smooth, upto entire satisfaction of Engineer-in-charge and after preparing the surface smooth applying one coat of oil bound distermper (washable) by using electric paint roller or roller brush, as per existing or as approved tint/ colour complete all as specified and as directed.

M&L preparation of old decorated surfaces of wood work exc. 10cm width or girth and applying one coat of synthetic enamel paint complete all as specified and as directed.

M&L preparation of old decorated steel surfaces exc. 10cm width or girth and applying one coat of synthetic enamel paint complete all as specified and as directed.

Mahathi Constructionss (BID ID -3140334)

ragavbuilders (BID ID -3140312)

M/s KM Marimuthu Achary (BID ID -3146460)

DELTA CONSTRUCTIONS (BID ID -3139485)

M R Govinda Reddy and Sons (BID ID -3140151)