Mtc. of road from Satchand Bazar to Natun Bazar via Dhanu Chowdhury Para (L-2.50 km). SH -Patch metalling, re-carpeting and seal coat. during the year 2025-26. (Portion from 0.700 km to 2.300 km). Gr-II.

2) WBM Grading 3 : Providing, laying, spreading and compacting jhama brick aggregates of specific sizes to water bound macadam specification including spreading in uniform thickness, hand packing rolling with three wheel roller 80-100 KN in stages to proper grade and camber, applying and brooming binding materials to fill up the interstices of coarse aggregate , watering and compacting to the required density Grading 3 as per MoRD Technical Specification Clause 405. (A) By Manual Means

Prime Coat (i) Low porosity Providing and applying prime coat with bitumen emulsion(SS-1) on prepared surface of granular base including cleaning of road surface and spraying primer at the rate of 0.70- 1.00 kg/sqm using mechanical means as per MoRD Technical Specification Caluses 502.

iii) Tack Coat: Providing and applying tack coat with bitumen emulsion (RS- 1) using emulsion distributer at the rate of 0.25 to 0.30kg per sqm on the prepared granular surface treated with primer & cleaned with hydraulic broom as per MoRD Technical Specification Clause 503.

Tack coat using hot straight run bitumen of grade VG-30 on bituminous Surface. Providing and applying tack Tack coat using hot straight run bitumen of grade VG-30, including heating the Bitumen, Spraying the bitumen, Cleaning and preparing the existing road surface as per specification: On bituminous surface @ 0.50 kg/Sqm.

20mm thick open –graded premix carpet using Bituminous (viscocity grade / Modified bitumen) binder. Providing, laying and rolling of open –graded carpet of 20mm thickness composed of 13.2mm to 5.6mm aggregates either using viscocity grade bitumen or emulsion to required line, grade and level to serve as wearing course on a previously prepared base, including. mixing in a suitable plants, laying and rolling with a three wheel 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 Type C or type D as per MoRD technical specification clauses 508. Case -1) By Manual Means. II) Bitumen of VG-30

Seal Coat Providing & laying seal coat sealing the voids in a bituminous surface laid to the specified levels, grade & cross fall using Type A or Type B or Type C or Type D as per MoRD technical specification clauses 510. 1) By Manual Means. Case-iv : Type D ( Premix with fine sand ) ii) Bitumen of VG-30

Surface Drain: Construction of unlined surface drain of average cross sectional area 0.4 sqm in ordinary soil to specify lines , grades, levels and dimensions. Excavated materials to be used in embankment with a lead upto 3 m and lead upto 3m (average lead 25 m) as per MoRD technical specification 307. I) Surface Drains in Ordinary Soil A) Manual Means

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