Asansol Durgapur Development Authority Tender

Grading - 1

Grading - 2

Wet Mix Macadam Base Course:Providing laying , spreading , and compacting graded stone aggregate to Wet Mix Macadam specification including screening of aggregates and granular materials , premixing the material with water at OMC in Wet Mix Plant , carriage of mixed material by tipper to site, laying in uniform layers with Paver in Sub- base / base course on well prepared surface and compacting with Vibratory Roller to achieve the desired density., including supply of all material costs for lighting, guarding , barricating, ,making earthen bundth to protect the edges including cost of quality control complete as per Clause 406 of Specifications for Road & Bridge Works of MoRT & H (5th Revision).

Repair to pot holes by removal of failed material, trimming the side to vertical and levelling 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 bituminous primer coat at the bottom and bitumen emulsion tack coat on sides and on bottom as per Techinacal Specification clause 303.1 for Rural Roads of MORD.

Prime Coat : Providing and applying primer coat with Cationic Bitumen Emulsion of approved grade conforming to IS : 8887 -1978 and reuuisite 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 incidential costs of work complete as per Clause 502 of Specification for Road & Bridge Works of MoRT&H (5th Revision).

Tack Coat :Providing and applying tack coat with Cationic Bitumen Emulsion of approved grade conforming to IS : 8887 -1978 on the prepared surface cleaned with hydrolic broom, moistening the surface including cost and carriage of emulsion, hire chareges of machinery & labour, cost of fuel and lubricants all complete as per Clause 503 of Specification for Road & Bridge Works of MoRT&H (5th Revision).

On Bituminous Surface : using Bituminous emulsion at the rate of 0.2 to 0.3 kg /sqm.

On Granular Surface treated with primer : using Bituminous emulsion at the rate of 0.25 to 0.3 kg /sqm.

Bituminous Macadam using Mobile Hot Mix Plant (Light Duty): Providing and laying bituminous macadam with Mobile Hot Mix Plant (Light Duty) using approved crushed aggregates of specified grading as per Table 500.7 premixed with bituminous binder, transported to site laid over a previously prepared surface at specified laying temperature by means of approved and suitable arrangements to the required grade, level and alignment and rolled with suitable power roller for break down, inter-mediate and finished rolling as per specification to achieve the desired compaction including cost and carriage of stone materials and bitumen, hire charges of machinery and equipment, cost of fuel and lubricants and wages of operational staff, quality control complete as per Specifications for Road & Bridge Works of MoRT&H (5th Revision).

For Grading 2 (19 mm nominal size, 50-75 mm thick.)

Open graded Premix surfacing using Bituminous (viscosity grade Paving bitumen / Modified bitumen ) binder & Mobile hot mix plant (Light duty) : Poviding , Laying and rolling of Open graded Premixed Surfacing of 20 mm thickness composed of 13.2 mm ( @ 0.018 cum per sqm ) 11.2 mm (@ 0.009 cum per sqm) size stone aggregates including throughly cleaning of the surface, screening cleaning and preheating stone chips and fully pre-coating the same either using viscosity grade paving bitumen or cut back or emulsion carrying the mixture by any suitable arrangement , laying the mixture uniformly over the surface, including line , grade and level to serve as wearing course on a previously preapered base , including mixing in Mobile Hot Mix plant (Light duty ) throughly rolling with a smooth wheeled roller 8 -10 Tonne capacity , finished to required level chips and matrix, heating the matrix , preheating the aggregates to required temperature and including the hire charges of Mobile hot mix plant (light duty ) and other machineries , pay of oparatrors and cost of fuel and lubricants etc. complete to be followed by seal coat of either type A or Type B as per technical Specifications Clause 508 for Rural roads for MORD..

Providing and laying Premixed Seal coat (Type – B) with approved quality sand / grit @ 0.6 cum per 100 sqm and bitumen binder on throughly 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 µ sieve ) uniformly with bitumen binder ,laying and spreading the mix at an uniform rate using suitable means, brushing the surface, if necessary, to ensure uniformaty, 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 incidential 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)

ByManual means with hot Bitumen binders (@ 6.8 kg/ 10 sqm) with Pakur variety.

Dressing and chilchalling Road flanks including cutting and filling with earth up to 150 mm average thickness finished with utward cross-grade of 1 in 30.

Sub-Total

GST-12% (SGST=6% & CGST=6%)ADD

WEST BENGAL LABOUR WELFARE CESS =1% ADD