WBPWD/EE /HD/NIT_ 28 /2025_2026

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 means : (i) From 50 mm to 100 mm thick

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 and preparing the bed by necessary cutting or filling, including cost of all materials and hire and labour charges of all men and machinery and compacting to the required density, as per Clause 404 of Specifications for Road & Bridge Works of MoRT&H (5th Revision) . (iii)Grading-II Aggregate (53 mm to 22.50 mm) Using Stone Screening Type B (11.2 mm) . B) Manual Means:

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 i)For WBM Surface: (with primer @ 0.85 kg/sqm)

Providing and applying Tack coat with Cationic Bitumen Emulsion of approved grade conforming to IS: 8887-1978 on the prepared surface cleaned with Hydraulic broom, moistening the surface including cost and carriage of emulsion, hire charges of machinery and labour, cost of fuel and lubricants all complete as per Clause 503 of Specifications for Road & Bridge Works of MoRT&H (5th Revision). i) On Granular Surface (Tack coat @ 0.275 kg /sqm) On surface treated with Primer

On Bituminous Surface

Repairing Potholes and making up small depression with power roller including screening cleaning chips or metal and washing drying as necessary and heating the chips or metal where necessary cutting potholes to regular shapes with vertical edges cleaning the disintegrated materials heating matrix and applying tack coat @ 0.225kg/m2 finishing the top of repaired surface levelled with adjoining area including cost and carriage of stone aggregate and matrix and including cost of applying tack coat (Tack coat is to be considered separately) i) With premixed chips with 54kg /m3 of bitumen per m3 of loose net volume of stone chips b)Using Mobile Hot Mix plant (Light Duty)

Providing and applying Bituminous profile corrective course using Mobile hot mix plant (Light duty) and using aggregate of Grading-2 of Table-3.3 premixed with 75kg of bitumen per cum, transported to site laid over apreviously prepared surface at specified laying temperature to the required grade, level,and alingment as per specification to achieve 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 staffs quality control complete as per direction of Engineer in charge

Open Graded Premix Surfacing with Cationic Bitumen Emulsion using 13.2 mm (@ 0.018 m3/m2) and 11.2 mm (@ 0.009 m3/m2) size stone aggregates, premixed with Cationic Bituminous Emulsion (M.S. grade) conforming to IS : 8887-1970 @21.5 kg per 10 m² of surface, including cleaning, moistening the surface, applying tack coat with cationic bitumen emulsion, screening, cleaning and washing the stone chips, intimately mixing with emulsion using Concrete Mixer, laying the mixture uniformly over the surface and rolling with power roller after hand packing and pinning adequately to ensure a compact surface all complete as per specification and direction of the Engineer-in-charge including cost and carriage of stone materials and emulsion, including cost of labour, hire and running charges of road roller and other tools and plants and cost of all other incidental charges including hire charges and cost of fuel and lubricants of machineries and equipment for construction and quality control as per Technical Specification Clause 508.2 for Rural Roads of MORD.

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, co By Manual Means With Hot Bitumen Binder (@ 6.80 kg / 10 sqm.)

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