PR of the PWD road from Old NH108B to Ballar village L 1.10 Km from Ch. 0.55 Km to Ch. 1.10 Km under PWD RandB Khowai Subdivision during the year 2025 26 SH WBM 2 WBM 3 Carpeting seal coat etc. Gr II

Road Work

Water Bound Macadam Sub-Base / Base using Jhama Brick Aggragate 1) WBM Grading - 2 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- 2 as per MoRD Technical Specification Clause 405. (A) By Manual Means cum

Water Bound Macadam Sub-Base / Base using Jhama Brick Aggragate 2) WBM Grading 3 Providing, laying, spreading and compacting jhama brick aggregates of specific sizes 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

Maintenance of bituminous surface road using Jhama brick aggregate Repair to pot holes by removal of failed material, trimming the sides to vertical and levelling the bottom, cleaning the same with compressed air or any appropriate method, filled with B.M (using jhama brick aggregate & bitumen of VG-30), after applying prime coat at the bottom and tack coat on sides and on bottom (using bitumen emulsion) and compacting, trimming & finishing the surface to form a smooth continuous surface, all as per MoRD technical specification Clauses 1900, 502, 503 and 504.

Tack Coat using hot straight run bitumen of grade VG-30 on WBM. (i) Providing and applying tack coatusing hot straight run bitumen of grade VG-30 including heating the bitumen, spraying gthe bitumen, cleaning and preparing the existing road surface as per specification: On WBM @0.75 kg/sqm.

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 (I) 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. Case-IV Type - D(premix with find sand) i)Bitumen of VG-30 A) By Manual Means

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