Name of Work:- REPAIR TO PQC SLAB, CRACKS, JOINTS AND EPOXY AT A DISPERSAL, 117HU DISPERSAL & 153HU DISPERSAL AT AF STN UDH UR
Sl. No.
Item Description
1
Raking out existing filling in expansion joints, construction joints, dummy joints upto 25mm depth including scrubbing of joints with diamond cutter machine(Heavy duty) or gas flame torch with heat application to complete remove existing sticking sealing compound incl old back up rod / Bitumen from the sides , top and bottom of joints and totally cleaning the top surface of joints with brush and finally fanning with compressed air to make the joints free from all loose materials i.e dirt/dust etc to entire satisfaction of Engr-in-Charge, applying with provision of bond breaker tape on bottom of joint and filling depth of joint with provision of polyethylene back up rod of suitable dia to ensure tight packing so that no gap or voides exist at the top of back up rod. The deteriorated edges of concrete joints (included upto 50mm either sides of the joints) shall be made good to true line with provision of polymer concrete. Joints (16mm to 24 mm wide) shall be sealed with provision of polyurethane based sealant with primer and filling the joints with polyurethane based sealing compound as laid down in manufacturers instructions and as directed by Engr-in-Charge. Minimum clear depth of sealant above back up rod shall be10 mm complete all as specified and as directed. NOTES:-(i) Size of joints shall be made by cutting; in case not available at site.(ii) If width of joints by cutting exceeds as specified above, the same shall be filled by polyurethane based sealant and no extra payment shall be made.(iii) Remaining depth at bottom (after keeping provision for back up rod & sealant) shall be filled with sand and cost of same shall be deemed included in item rate quoted by tenderer. No extra payment for provisioning of sand (if any) shall be made. (iv) Masking tape shall be applied on edges of joint to prevent accidental spillage of sealant and shall be removed after filling with sealant. Cost of the same shall be deemed included in item rate quoted by tenderer. (v) Expansion joints, construction joints, dummy joints upto 25mm depth including scrubbing of joints with diamond cutter machine(Heavy duty) or gas flame torch with heat application to complete removal of existing sticking sealing compound incl old back up rod / Bitumen from the sides , top and bottom of joints and totally cleaning the top surface of joints with brush and finally fanning with compressed air to make the joints free from all loose materials ie dirt/dust etc complete all as specified and directed.
2
All as per srl item No 1 above but joints 25 mm to 30mm wide and 12mm minimum clear depth of sealant above back up rod complete all as specified and as directed.
3
All as per srl item No 1 above but joints 31mm to 35mm wide and 12mm minimum clear depth of sealant above back up rod complete all as specified and as directed. Please Enable Macros to View BoQ information
4
All as per srl item No 1 above but joints 31mm to 35mm wide and 12mm minimum clear depth of sealant above back up rod complete all as specified and as directed. Please Enable Macros to View BoQ information
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