Short Term Maintenance Contract works of NH-302 from Km 0.000 to Km 11.850, Tlabung to Kawrpuichhuah under NHIDCL RO-Aizawl in the state of Mizoram for the year 2026-27

Maintenance of Earthen Shoulder (filling with fresh soil) (Making up loss of material/ irregularities on shoulder to the design level by adding fresh approved soil and compacting it with appropriate equipment.) (1/10.2)

Maintenance of Culverts (Maintenance of Hume pipe Culvert by way of Clearing, Cleaning, Erosion repair, repairs to cracks, parapet wall and protection work as per drawing and technical specification Clause 1908 ) Clearing slab/box type culverts and pipe culverts including clearing, cleaning and reshaping of upstream and downstream faces of these culverts within right of way. The job includes disposal of excess material recovered from site including vegetation outside ROW with all leads and lifts complete in all respects as per direction of Engineer-in-Charge. and as per Maintenance Standards Clause 3.1 (Frequency of cleaning will be one time in a year i.e. before start of monsoon). Slab/Box Type Culverts:

Maintenance of Culverts (Maintenance of Hume pipe Culvert by way of Clearing, Cleaning, Erosion repair, repairs to cracks, parapet wall and protection work as per drawing and technical specification Clause 1908 ) Clearing slab/box type culverts and pipe culverts including clearing, cleaning and reshaping of upstream and downstream faces of these culverts within right of way. The job includes disposal of excess material recovered from site including vegetation outside ROW with all leads and lifts complete in all respects as per direction of Engineer-in-Charge. and as per Maintenance Standards Clause 3.1 (Frequency of cleaning will be one time in a year i.e. before start of monsoon). Pipe Culverts:

Clearing road side vegetation, brush wood mooli bamboos, overgrown grass including removal etc. along existing road side, and disposal of the cut bushes down hill side of the road formation. This jungle clearance should includes minimum height of Clearance of 4.5m from top of pavement on uphill side of the road including road shoulder and all the bushes on the shoulder and down hill side of the road. C) MDRs,SHs,NHs etc (3/10.17)

Hill Side Drain Clearance (Removal of earth from the choked hill side drain and disposing it on the valley side manually) (4/10.11)

Land Slide Clearance in soil (Clearance of land slides in soil and ordinary rock by a Excavator / Back Hoe and disposal of the same on the valley side) (5/10.14)

GSB Plant Mix Method (Construction of granular sub-base by providing the material, mixing in a mechanical mix plant at OMC, carriage of mixed Material to work site, spreading in uniform layers with motor grader on prepared surface and compacting with vibratory power roller to achieve the desired density, complete as per clause 401) (6/4.1 A (ii))

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 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 and compacting to the required density.) By Manual Means (7/4.8 A (a))

Filling Pot-holes with WBM Materials Providing, laying, spreading and compacting stone aggregates of specific sizes to water bound macadam specification including , hand packing, rolling, applying and brooming requisite type of screening/ binding Materials to fill up the interstices of coarse aggregate, watering and compacting to the required density. (8/10.18)

Prime coat (Providing and applying primer coat with bitumen emulsion on prepared surface of granular Base including clearing of road surface and spraying primer at the rate shown in 500-1 using mechanical means.) iii) High Porosity (9/5.1)