DESILTING AND MINOR REPAIR WORKS IN EXISTING STORM WATER DRAIN AT VARIOUS STREET IN DN-23,24 AND 32, UNIT-6, ZONE-3

Desilting of Storm Water Drain (SWD 2)

Carting away the surplus earth and debris to a lead of 11km.and dumping in the Corporation Land as directed during the execution.

Supplying and fixing of 24" FRC manhole cover with frame 600mm dia clear opening heavy duty as per IS:12592/2002. The frame & cover shall bear a non fracture load of 20MT for 30seconds with frame height of 165mm, cover height 90mm, Bearing (Seating area of cover)75mm with Hot Dip Galvanizing Hook of cover 16mm, frame edge protection flat of size 25 x 3mm exposed surface of M.S. rings shall be painted with anti corrosive bitumastic paint

SUPPLYING AND PROVIDING SAFETY GEAR ARRANGEMENT

Supplying and fixing of FRP 550 x 550mm (Clear opening 450 x 450mm) gully grating and frame of appropriate size and load capacity of approved brand confirming to BSEN – 124:1994. Gully grating shall have minimum 30% of water entrance area that of clear opening of the chamber. Gully grating shall have top abrasion resistant layer of decorative grey granite finish confirming to test performed as per IS – 15658:2006. It shall also confirm “Permanent Set” criterion as per BSEN-124. Product should be tested in NABL accredited test lab for load capacity and permanent set. ( Medium Duty 10 - MT) (SWD 12)

Supplying and fixing of 700 x 700mm (Clear opening 600 x 600mm) gully grating and frame of appropriate size and load capacity of approved brand confirming to BSEN – 124:1994. Gully grating shall have minimum 30% of water entrance area that of clear opening of the chamber. Gully grating shall have top abrasion resistant layer of decorative grey granite finish confirming to test performed as per IS – 15658:2006. It shall also confirm “Permanent Set” criterion as per BSEN-124. Product should be tested in NABL accredited test lab for load capacity and permanent set. (Medium Duty - 10 - MT) (SWD 13)

RISING AND LOWERING OF SILT CATCHPIT COVER AND FRAME ETC