development of school building at bal hindi vidyalaya 3 , canal road , kolkata-700053 , building works ( c ) brickworks , concrete works etc a . brick works 8 . brick work with 1st class bricks in cement mortar ( 1:6 ) ( b ) in superstructure , ground floor , building works ( f ) structural steel works , grills , gates etc . a . original works 13 . ( a ) m . s . or w . i . ornamental grill of approved design joints continuously welded with m . s , w . i . flats and bars of windows , railing etc . fitted and fixed with necessary screws and lugs in ground floor . ( add extra @ 1% for each addl . floor upto 4th floor and @ 1 . 25% for each addl . floor above 4th floor ) ( ( ii ) grill weighing above 16 kg . / sq . mtr and above . ( mode of measurement ) :-the weight of grill per sq . m . will be determined by taking the physical weight of fabricated grill and dividing the same by covered area of the same . n . b . no shop priming will be allowed to facilitate inspection of workmanship . weight of grill is to be taken after final grinding and finishing the weld . , section 1 . ------------building works ( i ) plastering , pointing etc . a . original works 1 . 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 ] ( ii ) with 1:4 cement mortar ( a ) 20 mm thick plaster . , section 1 . ------------building works ( k ) painting , vernishing etc a . original works 1 ( a ) priming one coat on steel or other metal surface with synthetic oil bound primer of approved quality including smoothening surfaces by sand papering etc ( this item is applicable to new work or old work when the original surface has been exposed by removal of old paint . ) , building works ( k ) painting , vernishing etc ? ( a ) original works . ( 2 ) ( a ) painting with best quality synthetic enamel paint of approved make and brand including smoothening surface by sand papering etc . including using of approved putty etc . on the surface , if necessary : ( b ) on steel or other metal surface :with super gloss ( hi-gloss ) - ( iv ) two coats ( with any shade except white ) , section 1 . ------------building works ( k ) painting , vernishing etc a . original works 1 ( b ) priming one coat on timber or plastered surface with synthetic oil bound primer of approved quality including smoothening surfaces by sand papering etc . ( this item is applicable to new work or old work when the original surface has been exposed by removal of old paint . ) , section 1 . ------------building works ( i ) plastering , pointing etc . a . original works16 lime punning about 3 mm . thick with stone lime and shell lime ( 1:2 ) , building works ( c ) brickworks , concrete works etc a . brick works 16 . 125 mm . thick brick work with 1st class bricks in cement mortar ( 1:4 ) in ground floor . , estimated amount , add: 6%sgst , add: 6%cgst , 1% lwc