SRBC/TB/SDRF/02/GOH/2021-22

Amount

Clearing and grubbing road land including uprooting wild vegetation, grass, bushes, shrubs, saplings and trees of girth upto 300 mm, removal of stumps of such trees cut earlier and disposal of unserviceable materials and stacking of serviceable material to be used or auctioned, upto a lead of 1000m including removal and disposal of top organic soil not exceeding 150 mm in thickness as per Technical Specification Clause 201. (i) By Manual Means A) In area of light jungle.

Construction of subgrade and earthen shoulders with approved material obtained from borrow pits with all lifts leads trasporting to site, speading grading to required slope and compacxted to meet requirement of table (300-2) (including cost of testing of materials at site and laborotory as directed by the deptt.) (a) Private Land

Providing laying, spreading and compacting stone aggregate of specific sizes to WBM specification including spreading in uniform thickness, hand packing, rolling with smooth wheel roller 80-100 KN in stages to proper grade and camber, applying and brooming, stone screening/ binding materials to fill up the interstices of coarse aggregate, watering and compacting to the required density Grading-3 as per Technical Specification Clause 405. Using stone screening Type B 11.2 mm for Gr-III

Providing and applying primer coat with bitumen emulsion (SS-1) on prepared surface of granular base including cleaning of road surface and spraying primer at the rate of 0.90-1.2 kg/sqm using mechanical means as per Technical Specification Clause 502 (i) Low Porosity

Providing and applying tack coat with bitumen emulsion (RS-1) using emulsion pressure distributor @0.25 to 0.30 kg/sqm on the prepared dry and hungry bituminous surface cleaned with Hydraulic broom as per Technical Specification Clause 503.

Open graded premix carpet of 20mm thickness composed of 13.2mm. to 5.6 mm. aggregates 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 rolling with a Three Wheeled 80-100 KN static roller capacity finished to required level and grades to be followed by seal coat of either Type A or Type B or C as per Technical Specification Clause 508. Case-I A) By Manual Means 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 Case-III : Type C A) By Manual Means i) Bitumen (S-90)

Pinku Sarkar