Mtc. of Gurucharancherra RCC Bridge approach on Chailengta to Chawmanu road at ch.7.60km under the jurisdiction of PWD(RnB) Chawmanu Sub-div. during the year 2025-26

Scarifying Existing Bituminous Surface to a depth of 150 mm by Mechanical Means Scarifying Existing bituminous Road Surface by mechanical means to a Depth of 150mm and disposal of scarified material with a lift upto 3m and leads upto1000m as per MoRD Technical Specification Clause 301.4.

303 (ii) Compacting original ground supporting embankment Loosening of the ground upto a level of 300mm below the subgrade level,watered,grade dan dcompacted in layers to meet requirement of Tables300.1and300.2 for subgrade construction as per MoRD Technical Specification Clause 303.5.2.

4.2(405)Water Bound Macadam Sub-base/base 2) WBM Grading 2 Providing, laying, spreading and compacting stone aggregates of specific sizes to water bound macadam specification including spreading in uniform thickness,handpacking,rolling with smooth wheel roller 80-100 KN in stages to proper grade and camber, applyingand brooming, stone screening / binding materials to fill up the intersticesof coarse aggregate,watering and compacting to the required density 'Grading 2' as per MoRD Technical Specification Clause 405.

4.2(405)Water Bound Macadam Sub-base/base 3) WBM Grading 3 Providing, laying, spreading and compacting stone aggregates of specific sizes to water bound macadam specification including spreading in uniform thickness, handpacking, rolling with smooth wheel roller 80-100 KN in stages to proper grade and camber, applying and brooming, stone screening to fill up the intersticesof coarse aggregate,watering and compacting to the required density'Grading3'as per MoRD Technical Specification Clause 405.

Tack coat using hot straight run bitumen of grade VG-30 on W.B.M Providing and applying 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 specifications:On W.B.M. @ 0.75 kg/ sqm.

5.4(504)Bituminous Penetration Macadam Construction of penetration macadam over prepared Base by providing a layer of compacted crushed coarse aggregate using chips spreader with alternate applications of bituminous binder and key aggregates and rolling with vibratory roller to achieve the desired degree of compaction as per MoRT&H Technical Specification Clause 504. A. 50 mm thick

20 mm thick Open-Graded Premix Carpet using Bituminous (viscocity 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 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 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. A. By Manual Means Case - IV : Type D (premix with fine sand) (I) Bitumen of VG-30