DHUPGURI/BDO/NIT-004/2026-27 SL 3

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)

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 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.

Providing and erecting direction and place identification retro reflectorised sign as per IRC:67 made of high intensity grade sheeting vide clause 801.3, fixed over aluminium sheeting, 2mm thick with area not exceeding 0.9 sqm supported on a mild steel single angle iron post 75x 75x6mm firmly fixed to the ground by means of properly designed foundation with M15 grade cement concrete 45 x 45 x 60 cm, 60 cm below ground level as per approved drawing (Reference to MORT&H's specification 801).

GST