development of footpath 16 no . water tank to tata communication centre via nift ( both side ) and tata communication centre to beleghata turning and law college to jalvahu vihar within ward no . 37 under bidhannagar municipal corporation . , taking out old kerb chennel as per direction of the eic . , relaying disturbed channel stone on new lime concrete ( 18 : 36 : 100 ) bed up to 75 mm thick . , providing and fixing at or near ground level precast cement concrete in kerbs ( size: 410 mm x 310 mm x width 150 mm at bottom with circular nosing at top ) ( nano kerb ) of cement concreat m25 grade without reinforcement , fixing as per approved pattern and setting in position at site after preparing the bed grade and slopes by laying cement concrete with jhama khoa ( 1:4:8 ) as per specification and direction of engineer-incharge including filling of joints with 10 mm thick cement morter ( 3:1 ) and back filling the vertical piece properly with earth duly compacted and curing the morter joints for atleast 3 days including cost and carriage of all materials complete . , supplying and laying polythene sheet ( 150gm / sq . m . ) over damp proof course or below flooring or roof terracing or in foundation or in foundation trenches . , 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 . a ) pakur variety , supplying &laying as per irc-sp:063-2004 paver unit of any shade of approved quality as per relevant is code , laid in pattern as directed in pavement , footpath , driveway ( paver block only ) , etc including necessary underlay complete in all respect with all labour and material . [ border concrete if necessary to be paid separately ] . note: sub-grade cbr should not be less than 5 . ( b ) 50 mm thick interlocking designer concrete paver block m30 grade for non-traffic zone , buiding premises , garden , parks , domestic drive as per is: 156582006 ( over 20-30 mm medium sand bed on 200mm thk bound gnaular / granular base course including cost of sand for sand bed but excluding cost of base course & subgrade preparation . ) ( ii ) coloured decorative