Emergent Pot holes repairing Works of Cooch Behar Sitalkuchi Road

Patching of potholes by draining water, cutting the pothole area to rectangular shape with vertical edges, removing all loose materials, screening and stacking the same for reuse with new materials as per requirement, filling the pothole area with additional volume of crushed stone materials / laterite / Jhama / broken shingles / coated stones of Pakur variety etc. and screenings as applicable, and compacting the same with static roller as per Water Bound Macadam Specification, including cost of all materials and machineries.

Water Bound Macadam Base Course Providing, laying, spreading and compacting stone aggregates of specific sizes to water bound macadam specification including spreading in uniform thickness, hand packing, rolling with vibratory roller 8-10 tonnes in stages to proper grade and camber, applying and brooming requisite type of screening / binding materials to fill up the interstices of coarse aggregate, watering including lighting, guarding, barricading and making necessary earthen bundh of one metre width on each side ....etc (b) With coarse aggregate size range 53 - 22.4 mm (Grading -II) with Type - B Screening (i) Using manual means:

Providing and applying Prime Coat using Cationic bituminous emulsion of approved grade conforming to IS : 8887-1978, over prepared surface including cleaning of surface with mechanical broom, moistening the surface, applying tack coat including cost and carriage of emulsion, hire charges of machineries and labour, cost of fuel and lubricants all complete as per specification and direction of the Engineer-in-charge.

Providing and applying Tack coat using Cationic bituminous emulsion of approved grade conforming to IS : 8887-1978, over prepared surface including cleaning of surface with mechanical broom, moistening the surface, applying tack coat including cost and carriage of emulsion, hire charges of machineries and labour, cost of fuel and lubricants all complete as per specification and direction of the Engineer-in-charge. (ii) On Granular surfaces treated with primer (Using Bitumen emulsion at the rate of 0.25 to 0.30 kg per sqm.) (i) By manual means.

Repairing pot-holes and making up small depressions with ramming or power rolling including screening, cleaning chips or metals and washing,drying as necessary and heating the chips or metal (i) With premixed Chips or Bajrees with 54 kg of bitumen per m3 of loose net volume of stone chips using concrete mixer machine. Pakur Variety (b) Using Mobile Hot Mix Plant (Light duty)

Open-Graded Premix Surfacing using Bituminous (Viscosity grade Paving Bitumen / Modified bitumen) Binder and Mobile Hot Mix Plant (Light Duty) Providing, laying and rolling of Open - graded premix surfacing of 20 mm thickness composed of 13.2 mm (@ 0.018 m³ per m²) and 11.2 mm (@ 0.009 m³ per m²) size stone aggregates, including thoroughly cleaning of the surface, screening, cleaning and pre-heating stone chips and fully pre-coating the same either using viscosity grade paving bitumen or cut-back or emulsion .....previously prepared base, including mixing in Mobile Hot Mix Plant (Light Duty) and thoroughly rolling...either Type A or Type B as per Technical Specification Clause 508 for Rural Roads of MORD. Pakur Variety

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 ...etc. I By Mechanical Means (i) With Hot Bitumen Binder (@ 6.80 kg / 10 sqm.) Pakur Variety

Providing and applying Tack coat using Cationic bituminous emulsion of approved grade conforming to IS : 8887-1978, over prepared surface including cleaning of surface with mechanical broom, moistening the surface, applying tack coat including cost and carriage of emulsion, hire charges of machineries and labour, cost of fuel and lubricants all complete as per specification and direction of the Engineer-in-charge. (i) On Bituminous Surface (Using Bitumen Emulsion at the rate of 0.20 to 0.30 kg per sqm.) (i) By manual means.

Picking up and removing old bituminous layer or sand sealing coat from old black topped surface and cleaning the exposed surface by scraping and stacking the material as directed. (a) By manual (i) From 25 mm to 50 mm thick.

ADD GST @ 18.00% ON SUM OF AMOUNT Sl-01 to SL-09

ADD Cess @ 1.00% ON SUM OF AMOUNT Sl-01 to SL 10

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