Kolkata Metropolitan Development Authority Tender

Providing and laying Premixed Seal Coat (Type B) with approved quality sand/grit @ 0.6 m3/ 100 m2 and bitumen binder on thoroughly cleaned black top surface coated with tack coat, including heating and mixing cleaned sand/grit (100 % passing through 2.36 mm sieve and retained on 180 micron sieve) uniformly with bitumen binder, laying and spreading the mix at an uniform rate using suitable means, brushing the surface, if necessary, to ensure uniformity, followed by rolling with power roller including the cost and carriage of binder and aggregates, cost of heating the binder and aggregates and all other incidental charges, cost of fuel and lubricants, including hire charges of machineries, tools & plants required for construction and quality control complete as per Clause 511 of Specifications for Road & Bridge Works of MoRT&H (5th Revision). II By Manual Means With Hot Bitumen Binder (@ 6.80 kg / 10 sqm.

Patch repair on already filled pot holes with BM with 12 mm premix carpet using premixed stone chips of approved quality with hot matrix using 1.00 m3 of 11.2 mm chips and 0.6m3 of 5.6 mm chips per 100 m2 of surface, including preheating the stone chips on suitable pans and intimately mixing the hot chips separately with hot matrix @ 56 kg per m3 of stone chips, laying the mixture uniformly over the surface and rolling with power roller, after hand packing and pinning adequately to ensure a compact surface.

Add GST @ 12% on Rs. 41,74,227.21 i.e. Total amount over Item No. 01 to 09

Cutting kutcha drain of 600 mm wide and depth up to 300 mm, including disposal of excavated material in embankment slopes within a lead of 50 m. b) Through Mixed soil.

Mending Potholes and depressions by stitching picked jhama bricks with one brick-on-edge laid in herring bone pattern and including necessary cushion of sand below the soling (and in between layers) including cutting the pothole area to rectangular shape with vertical edges, removing all loose materials, finishing the surface to match with adjacent areas complete as per direction. (b) One brick-on-edge laid in herring bond pattern (thickness 125 mm)

Prime Coat: Providing and applying primer coat with Cationic Bitumen Emulsion of approved grade conforming to IS:8887-1978 and requisite quantity on prepared surface of granular base including cleaning of road surface and spraying primer using Mechanical means including cost and carriage of bitumen emulsion and all other incidental costs of work complete as per Clause 502 of Specification for Road & Bridge Works of MoRT&H (5th Revision). For WBM / WMM Surface:(with primer @ 0.85 kg/sqm)

Add Labour Welfare Cess @ 1% on Rs. 46,75,134.48 i.e. Total amount over Item No. 01 to 10

Maintenance of Bituminous surface road i) Repair to pot holes by removal of failed material, trimming the sides to vertical and leveling the bottom, cleaning the same with compressed air or any appropriate method filled with B.M (thickness not more than 75 mm in single layer) applying bitumen emulsion prime coat at the bottom and bitumen emulsion tack coat on sides and on bottom as per technical specifications Clauses 502 and 503 for Rural Roads of MORD.