Improvement of road from Kachugaon Sankosh PWD Road

Amount

Clearing and grubbing road land including up rooting wild vegetation grass, bushes, shrubs, sapling and trees of girth upto 300mm, removal of stumps of trees cut earlier and disposal of unserviceable materials and stacking of serviceable materials to be used or auctioned, upto a lead of 1000m including removal and disposal of top organic soil not exceeding 250mm in thickness as per Technical Specification Clause 201. (I) By manual means (A) In area of non - thorny jungle

Construction of embankment with material approved material obtained from borrow pits, with a lift upto 1.50m, transporting to site, spreading , grading to required slope and compacting to meet required of Table 300.1 and 300.2 with a lead upto 1000m as per Technical Specification Clause 301.5 (I) Private land.

Construction of subgrade and earthen shoulders with approved material obtained from borrow pits with all lift and leads transporting to site spreading, grading to required slope and compacted to meet requirement of Table 300.2 with lead upto 1000m as per Technical Specification Clause 303.1. (i) Private Land

Furnishing and laying of the live sods of perennial turf forming grass on embankment slope, verges or other locations shown on the drawing or as directed by the Engineer including preparation of ground, fetching of sods and watering

Construction of grannular sub-base by providing well graded material, spreading in uniform layers with motor grader on prepared surface, mixing by mix in place method with rotavator at OMC, and compacting with smooth wheel roller to achive the desired density, complete as per Clause 401 (ii) For Grading II Material

Providing, laying, spreading and compacting stone aggregates specific sizes to Water Bound Macadam specification including spreading in uniform thickness, hand packing, rolling with three wheel 80-100 KN static roller in stages to proper grade and camber, applying and brooming crushable screening to fill-up the interstices of coarse aggregates, watering and compacting to the required density Grading-2 as per Technical Specification Clause 405 (A) By Manual Means Grading-II (63mm to 53mm size broken metal)

Providing, laying, spreading and compacting stone aggregates specific sizes to Water Bound Macadam specification including spreading in uniform thickness, hand packing, rolling with three wheel 80-100 KN static roller in stages to proper grade and camber, applying and brooming crushable screening to fill-up the interstices of coarse aggregates, watering and compacting to the required density Grading-3 as per Technical Specification Clause 405 (A) By Manual Means Grading-III (53mm to 22.4mm size broken metal)

Providing and applying primer coat with bitumen emulsion (SS-1) on prepared surface of granular Base including clearing of road surface and spraying primer at the rate of 0.70-1.0 k.g/sqm using mechanical means as per Technical Specification Clause 502.)

Providing and applying tack coat with Bitmen emulsion (RS-1) using emulsion distributor at the rate of 0.20 to 25 kg per sqm on prepared bituminous surface cleaned with Hydraulic broom as per technical specification Clause 503.

Providing, laying and rolling of open-graded permix surfacing of 20mm thickness composed of 13.2mm to 5.6mm aggregates either using penetration grade bitumen to required line, grade and level to serve as wearing course on a previously prepared base, including mixing in a suitable plant, laying and rollinig with a prepared smooth wheel roller 80-100 kn capacity to the required level and grades to be followed by seal coat of either Type-A or Type -B or Type-C as per Technical Specification Clause 508. (i) Bitumen (S-90)

Providing and laying seal coat, sealing the voids in a bituminous surface laid to the specified levels, grade and cross fall using Type A, Type B and Type C as per Technical Specification Clause 510. B. By Mechanical Means:: Case-I Type A (11.2mm to 2.36mm) (i) Bitumen (S-90)

Sri Sankar Debnath

SAJAL DEBNATH