Improvement of road from Kali Chowmuhani to Kaiyachanbari via Natunbari under PWD (R and B) Jirania Sub-Division, during the year 2025-26 SH GSB, WBM-3, Carpeting and other allied works. (L 0.38 Km, Ch 0.38 to 0.76 Km). Gr-II

Clearing Grass and Removal of Rubbish. Clearing grass and removal of rubbish up to a distance of 30 m outside the periphery of the area as per MoRD Technical Specification Clause 201. By Manual means

Compacting orginal ground supporting Subgrade. Loosening of the ground upto a level of 300 mm below the subgrade level, watered, graded and compacted in layers to meet requirement of Tables 300.1 and 300.2 for subgrade construction as per MoRD Technical Specification Clause 303.5.2.

Construction of Embankment with Material Obtained from Borrow Pits. Construction of embankment with approved material obtained from borrow pits with a lift upto 1.5 m, transporting to site, spreading, grading to required slope and compacting to meet requirement of Tables 300.1 and 300.2 with a lead upto 1000 m as per MoRD Technical Specification Clause 301.5.

Construction of Subgrade and Earthen Shoulders. Construction of subgrade and earthen shoulders with approved material obtained from borrow pits with all lifts and leads, transporting to site , spreading, grading to required slope and compacted to meet requirement of Table 300.2 as per MoRD Technical Specification Clause 303.1.

Dismantling of Brick Soling, stacking serviceable materials and unserviceable materials separately with all lifts and a lead of 500 m by manual means as per MoRD Technical Specification Clause 202

Labour charge for Breaking of Jhama bats/ Jhama bricks/ 1st class bricks. Breaking of Jhama bats/ Jhama bricks/ 1st lass bricks (including bigger lumps) into metal/chips/ aggregates and stacking serviceable materials and unserviceable materials separately as per direction of the Engineer-in-charge with all lifts and upto a lea of 100 m. Required size for GSB (53 mm to 0.075 mm) as per MoRD Technical Specification

Charge for construction of Granular Sub-base by providing well graded material (53 mm to 0.075 mm jhama brick aggregate, grading-I), spreading in uniform layers with tractor with atachment on prepared surface, mixing by mix in place method at OMC, applying and brooming sand to fill up the interstices of coarde aggregate, watering and compacting with smooth wheel roller to achieve the desired densiy, complete as per MoRD Technical Specification Clause 401, (excluding the cost of jhama aggregate which are available at site only). For Grading - I Material By Mix in Place Method

Granular Sub-base with Well Graded Material (Table 400.1 ) using Jhama Brick Aggregate. By Mix in Place Method. Construction of granular sub-base by providing well graded material ( Jhama Brick Aggregate , Grading-I as per Table 400.1, spreading in uniform layers with tractor with attachments on prepared surface, mixing by mix in place method with rotavator at OMC, applying and brooming sand to fill up the interstices of coarse aggregate, watering and compacting with smooth wheel roller to achieve the desired density, complete as per MoRD Technical Specification Clause 401. For Grading I Material (jhama brick aggregate)

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. By Manual Means

Prime Coat. 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 0.70- 1.00 kg/sqm using mechanical means as per MoRD Technical Specification Clause 502.

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

20 mm thick Open-Graded Premix Carpet using Bituminous (Viscosity grade/ modified bitumen) Binder. Providing, laying and rolling of open-graded premix carpet of 20 mm thickness composed of 13.2 mm to 5.6 mm aggregates either using Viscosity 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 plant, 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 Clause 508. Case - I : By Manual Means Bitumen of VG-30

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 or Type B or Type C or Type D as per MoRD Technical Specification Clause 510. By Manual Means Case - IV : Type - D

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