Maintenance of road from Shantikali Ashram to Khutamara under the jurisdiction of Khumulwng PWD (R and B) Sub-Division during the year 2025-26 SH Patch Grouting, Re carpeting..etc.(At Ch. from 0.00 km to 0.995 km).

Patch repairing / Maintenance of bituminous surface road using jama brick aggregate & viscosity graded bitumen (VG-30) Repair to pot holes and making up small depressions with ramming or power rolling after removal/ disposal of disintegrated materials within a lead of 50 m, cutting pot holes to regular shapes with vertical edges and levelling the bottom, cleaning the same with compressed air or any other appropriate method including screening, cleaning of aggregates and filling up with jhama chips using bitumen of VG-30 @ 54 Kg per m3 of loose volume of jhama brick chips after applying tack coat of bitumen on sides and bottom @ 0.75 kg/sqm and finishing the top of repaired surface levelled with adjoining of sand @ 0.006 cum/sqm of prepared road surface as per direction of the Engineer-in-charge and all as MoRD technical specification clauses 1900,502,503 and 504.

Tack Coat using hot straight run bitumen of grade VG-30 on Bituminous Surface Providing and applying tack coat using hot straight run bitumen of grade VG-30, including heating the birumen, spraying the bitumen, cleaning and preparing the existing road surface as per specifications: On bituminous surface @ 0.50 kg/sqm.

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

Road side Pucca Drains Construction of road side pucca drain with M10 (1:3:6 with jhama brick aggregate) to specified lines, grades, levels and dimensions as per approved design and MoRD Technical Specification Clause 307, 1606. Excavated material to be used in embankment at site. (including centering, shuttering, etc. but excluding reinforcement) B. Trapezoidal drain (top clear width 600 mm, bottom clear width 300 mm and clear depth of 400 mm) I. In Ordinary Soil

Maintenance of Drains The maintenance of drains include erosion, repair, clearing, cleaning, reshaping, regarding, deepening of side drains as well as catch water drains as per MoRD technical specification Clause 1907. as per drawing and MoRD technical specification Clause 1903.

(2) Maintenance of earthen shoulder (Stripping of excess soil) Stripping excess soil from the shoulder surface to achieve the approved level and compacting with plate compactor at OMC as per drawing and MoRD technical specification clause 1903.

Surface Drains Construction of unlined surface drains of average cross-sectional area 0.4 sqm in ordinary soil to specified lines, grades, levels and dimensions as per MoRT&H Technical Specification clauses of section 300. Excavated material to be used in embankment with a lift upto 3 m and lead of 50 m (average lead 25 m). (i) Surface Drains in Ordinary Soil : (B) Mechanical means.

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