PR of the PWD road from Nani Debnath house to Haradhan Chowdhury house L 1.40 KmCh. From 0.70 Km to 1.40 Km under PWD RandB Khowai Subdivision during the year 2025 26 SH WBM Carpeting Seal Coat etc. Gr II

Road Work

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.

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

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.

Tack Coat using hot straight run bitumen of grade VG-30 on bitumuinous surface. (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 bituminous surface @0.50 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

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.

Construction of toe walls for protection of slopes as per Drawing and MoRD technical specifications Clause 1302.5 (including centering, shuttering staging etc. but excluding reinforcement) Cement concrete grade M 10 in case of concrete block pitching (i) Nominal mix 1:3:6

Surface Drains Construction of unlined surface drains of average cross- sectional area 0.40 sqm in ordinary soil to specified lines, grades, levels and dimensions. Excavated material to be used in embankment with a lift upto 3 m and lead of 50 m (average lead 25 m) as per MoRD Technical Specification Clause 307. (i) Surface Drains in Ordinary Soil (A) Manual Means

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