WBHIDCO/GM E-II/AA-III/NIT-18/2026-2027

Dismantling of Flexible Pavements Dismantling of flexible pavements and disposal of dismantled materials upto a lead of 1000 metres, stacking serviceable and unserviceable materials separately (Reference to MoRT&H's specification clause 202) (ii) By Mechanical Means. (ii)A) Bituminous course

Wet Mix Macadam Providing, laying, spreading and compacting graded stone aggregate conforming to the grading of table400 13 revised vide table2 of IRC : 109 (2015) to wet mix macadam specification including premixing the Material with water at OMC in mechanical 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 .The thickness of a single compacted layer shall not be less than 75 mm.(Reference to MoRT&H's specification 406.

Prime Coat Providing and applying primer coat with cationic bitumen emulsion SS1 grade conforming to IS:8887 on prepared porous granular surface including clearing of road surface and spraying primer using mechanical means (Reference to MORT&H's specification clause 502). i) On WMM/WBM surface @ 0.70-1.0kg/sqm.

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). ii) On Granular surface treated with primer @ 0.25kg-0.30 /sqm.

Bituminous Macadam Providing and laying bituminous macadam using crushed aggregates of specified grading premixed with bituminous binder, transported to site, laid over a previously prepared surface with paver finisher to the required grade, level and alignment and rolled as per clauses 501.6 and 501.7 to achieve the desired compaction (Reference to MORT&H's specification clause 504). 8a) With Continuous Type HMP (60-90 TPH). ii) for Grading 2 (19 mm nominal size)

Close Graded Premix Surfacing/Mixed Seal Surfacing (Reference to MORT&H's specification clause 508). Mechanical means using HMP of appropriate capacity not less than 75 tonnes/hour. Item Providing, laying and rolling of close-graded premix surfacing material of 20 mm thickness composed of 11.2mmto0.09mm (Type-A) or13.2mmto0.09mm (Type-B) aggregates using viscosity grade bitumen of suitable approved grade to the required line, grade and level to serve as wearing course on a previously prepared base, including mixing in a suitable plant, laying and rolling withaSmoothwheeledroller8-10 tonne capacity, and finishing to required level and grade. Case-I Type-A. (rainfall more than 150cm/year)

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