WB/01/BDO/MAL/2026-27/01

By Mix in Place Method Construction of granular sub-base by providing graded materials such as natural sand/crushed gravel/crushed stone/combination depending upon the required grading , spreading in uniform layers with motor grader on prepared surface, mixing by mix in place method with rotavator and compacting with vibratory roller toachieve at least 98% of the maximum dry density for the material determined as per IS:2720 (Part 8), complete as per clause 401 desire density, complete as per clause 401 Rate per cum for grading-III Material (River Bed Materials in the proportion (2 : 1 : 1) (without fine sand and dust) consisting of Shingles upto 26.5mm size Bazrees about 11.2 mm size and Coarse sand as per approved of Engineer-In-Charge.)

Water Bound Macadam Providing, laying, spreading and compacting stone aggregates of specific sizes to water bound macadam specification including spreading in uniform thickness, hand packing, rolling with 3 wheeled steel/ vibratory roller 8-10 tonnes in stagesto proper grade and camber, applying and brooming requisite type ofscreening/ binding Materials to fill up the interstices of coarse aggregate,watering and compacting to the required density (Reference to MoRT&H's specification By Mechanical Means: Grading-1 (Table 400-9) 9B (i)(b) Using Screening (Table 400-10) Type-B (11.2 mm aggregate)

Water Bound Macadam Providing, laying, spreading and compacting stone aggregates of specific sizes to water bound macadam specification including spreading in uniform thickness, hand packing, rolling with 3 wheeled steel/ vibratory roller 8-10 tonnes in stagesto proper grade and camber, applying and brooming requisite type ofscreening/ binding Materials to fill up the interstices of coarse aggregate,watering and compacting to the required density (Reference to MoRT&H's specification By Mechanical Means: Grading-2 (Table 400-9) 9B (ii)(b) Using Screening(Table 400-10) Type-B (11.2 mm aggregate)

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.

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

Open - Graded Premix Surfacing Providing, laying and rolling of open - graded premix surfacing of 20 mm hickness composed of 13.2 mm to 5.6 mm aggregates either using viscosity grade bitumen of approved grade to required line, grade and level to serve as wearing course on a previously prepared base, including mixing in a suitable plant, laying and rolling with a smooth wheeled tandem or other approved type roller 8-10 tonne capacity, finished to required level and grades Reference to MORT&H's specification clause 510) Case - I: Mechanical method using approved grade Bitumen and HMP of ppropriate capacity not less than 75 tonnes/hour .

Seal Coat Providing and laying seal coat sealing the voids in a bituminous surface laid to the specified levels, grade and cross fall using. Type A and B seal coats (Reference to MORT&H's specification clause 511) Case - II : Type B : Providing and laying of premix sand seal coat with HMP using approved crushed stone chipping and viscosity grade paving bitumen of suitable approved grade.

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