Hooghly River Bridge Commissioners Tender

Repairing pot-holes and making up small depressions using Cationic Bitumen Emulsion conforming to IS 8887- 1978 with stone metals / chips premixed with emulsion in concrete mixer or any other method approved by the Engineer-in-Charge, including cutting the pot-hole area in regular shapes with vertical edges, thorough cleaning & moistening of surface, applying tack coat, filling up the potholes with pre-mixed metals/chips in layer/layers as per specification and direction of the Engineer-incharge, compacting by power roller, finishing the top of repaired surface levelled with adjoining area including cost and carriage of stone aggregates, blinding material & bitumen emulsion, hire & running charges of rollers and other tools & plants, cost of fuel & lubricants and other incidental charges excluding cost of applying tack coat. [Using stone chips of size 22.4 mm and 11.2 mm in 60:40 proportion, premixing with bitumen emulsion @70.7 kg per m3 of loose net volume of stone chips.]

Tack Coat: Providing and applying tack coat with Cationic bitumen emulsion (RS1) complying with IS:8887 using emulsion pressure distributor on the prepared bituminous/granular /cement concrete pavement surface cleaned with mechanical broom and high pressure air jet (Reference to MORT&H's specification clause 503). iii)On Cement Concrete Pavement surface @ 0.30kg-0.35 /sqm.

Mastic Asphalt Providing and laying Mastic asphalt wearing course with paving grade bitumen meeting the requirements given in table 500-29 using approved coarse aggregate, fine aggregate, filler material and bitumen, prepared by using Mastic cooker including cost and carriage of all ingredients, cost of heating aggregates and binder, mixing in specified proportions conforming to approved Job Mix Formula and laid to required level and slope after cleaning the surface, compacting, sealing the construction joints and surface finishing conforming to specifications including providing antiskid surface with bitumen pre-coated fine-grained hard stone chipping of 13.2 mm nominal size at the rate of 0.005cum per 10 sqm and at an approximate spacing of 10 cm center to center in both directions, pressed into surface when the temperature of surfaces not less than 100°C, protruding 1 mm to 4 mm over mastic surface, including the hire charges of all tools and plants and machinery, pay of operators, cost of fuel and lubricants and all other incidental charges and quality control all complete as per Clause 516 of Specifications for Road & Bridge Works of MoRT&H(5th Revision). (i) 25 mm thicknes