roof treatment over turbine hall of unit#1 and 2 at btps . , roof treatment over turbine hall of unit#1&2 at btps . , taking out old damaged tarfelt from the roof , parapet etc . preparing the roof surfaces by removing all spoils , blisters , moss etc . from the working site and disposal of the same beyond the compound and cleaning the site in all respect as per direction of engineer-in-charge . all floor . , stripping off worn out plaster and raking out joints of walls , celings etc . upto any height and in any floor including removing rubbish within a lead of 75m as directed . , dismantling all types of plain cement concrete works , stacking serviceable materials at site and removing rubbish as directed within a lead of 75 m . in ground floor including roof . upto 150 mm . thick . , dismantling all types of masonry excepting cement concrete plain or reinforced , stacking serviceable materials at site and removing rubbish as directed within a lead of 75 m . in ground floor including roof . , plaster ( to wall , floor , ceiling etc . ) with sand and cement mortar including rounding off or chamfering corners as directed and raking out joints including throating , nosing and drip course , scaffolding/staging where necessary ( ground floor ) . [excluding cost of chipping over concrete surface]with 1:6 cement mortar: 25 mm thick plaster . , ordinary cement concrete ( mix 1:2:4 ) with graded stone chips ( 20 mm nominal size ) excluding shuttering and reinforcement , if any . in ground floor as per relevant is codes: pakur variety . , brick work with 1st class bricks in cement mortar ( 1:6 ) : in superstructure , ground floor . , supplying & laying 3mm thick pre-fabricated plastomeric water proofing membrane conforming to en 12311-1 & astmd 5147 , manufactured with atactic poly propylene ( app ) modified premium grade asphalt , specially reinforced with non-woven polyester core with polyester reinforcement @160 gms per sqm & both faces covered with thermo-fusible polyethylene film /mineral on top face over a coat of primer @ 0 . 40 lit/sqm of manufacturer s specification on smooth , clean dry surface prepared wherever required . lap joint shall be provided of 75 mm in longitudinal & 100 mm in transverse direction and fused using lpg/ propane torch employing extra care ensuring full bondage , complete removal of entrapped air and sealing edges into grooves in appropriate manner as per direction of engineer -in-charge all complete including materials , labour and applicable taxes . ( payment shall be made on the basis of finished surface area . ) . membrane property: softening point> 150 deg c , cold flexibility < -6 deg c , tensile strength , n/cm: 600 ( longitudinal ) , 450 ( transverse ) , tearing strength , n:300 ( longitudinal ) , 200 ( transverse ) . , neat cement punning about 1 . 5mm thick in wall , dado , window sill , floor etc . note:cement 0 . 152 cu . m per100 sq . m . floor ,