WBPWRD/AE/BHTHSD/eNIT06/26-27

Repairing Pot-holes with Bituminous Macadam (Grading-II, for compacted thickness of upto 75mm) Filling Pot Holes with Bituminous Macadam using Mobile Hot Mix plant (6-10 TPH) with approved crushed aggregates of specified grading premixed with bituminous binder @3.4% by wt. of the total mix, transported to site and laid in the pot hole prepared before hand by cutting the edges to get a firm vertical face and by removing all the failed and loose materials including dust and applying tack coat evenly on the sides and on the surface as per specification, rolling the filled depression with 8-10 tonne smooth wheeled roller to achieve the desired compaction, including the cost and carriage of stone aggregates and bitumen, hire charges of machinery and equipment, cost of fuel and lubricants and wages of all operational staff, quality control except the cost of tack coat complete as per direction of Engineer-in-charge. Payment to be made on the basis of the loose net volume of the stone aggregates used in the work. (Materials required per cum: 20mm size @0.07m3, 13.2mm size @0.33m3, 5.6mm size @0.65m3, 2.36mm size @0.21m3, 300 micron size @0.08m3, 75micron size @0.08m3, bitumen @75kg)

Open Graded Premix Surfacing Providing, laying and rolling of open - graded premix surfacing of 20 mm thickness composed of 13.2mm to 5.6 mm aggregates either using viscosity grade bitumen of approved grade to required line,grade and level to serve as wearing course on a previously prepared base, including mixing in a suitable plant, laying and rolling with a smooth wheeled tandem or other approved type roller 8-10 tonne capacity, finished to required level and grades (Reference to MORT&H's specification clause 510).

Seal Coat Providing and laying seal coat sealing the voids in a bituminous surface laid to the specified levels,grade and cross fall using. Type B seal coats (Reference to MORT&H's specification clause 511) Type B seal coat (Materials required per sqm: 2.36mm to 90 micron size @0.006m3 & bitumen @0.68kg)

Tack Coat Providing and applying tack coat with bitumen emulsion using emulsion plressure distributor on the prepared bituminous/granular/cement concrete pavement surface cleaned with mechanical broom (Reference to MORT&H's specification clause 503) (Materials required per sqm. Bitumen emulsion @0.250Kg).

SUB TOTAL

GST @ 18% over Sl. No. 1 to 4