Upgradation of road from Bangamura to Gejacherra under the jurisdiction of PWD(RnB),Chawmanu sub-div during the year 2025-26

Patch repairing/ Maintenance of bituminous surface road using Jhama brick aggregate & Viscosity Graded bitumen (VG-30) Ppairing 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 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 area in proper grade and camber including spreading of sand @ 0.006 cum/sqm of prepared road surface as per direction of the Engineer-inCharge and all as per MoRD technical specification Clauses 1900,502, 503 and 504.

WBM Grading 3 Providing, laying, spreading and compacting stone aggregates of specific sizes to water bound macadam specification including spreading in uniform thickness, hand packing, rolling with smooth wheel roller 80-100 kN in stages to proper grade and camber, applying and brooming, stone screening 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 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.

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 bitumen, 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 (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

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) II. Cement concrete grade M 10 in case of concrete block pitching (i) Nominal mix 1:3:6

Excavation for Structures A. Without dewatering Earthwork in excavation fo rstructures as per drawing and MoRD technical specifications Clause 305.1 including settingout, construction of shoring&bracing, removal of stumps&other deleteriousmaterial anddisposal upto a lead of 50 m,dressingofsides&bottom and back filling in trenches with excavated suitable material. I Ordinary Soil (i) Upto 3 m depth

Gabian Structure for Retaining Earth Providing and construction of a gabian structure for retaining earth with segments of wire crateso f size 7m x 3m x 0.6m each divided into1.5m compartments by crossnetting,made from 4mm galvanised steel wire@32 kg per 10 sqmhaving minimum tensile strength of 300 Mpa conforming to IS:280 and galvanizing coatingconforming to IS:4826, woven into mesh with double twist, mesh size not exceeding 100 x 100 mm, filled with boulders with least dimension of 200mm, all looseends to be tied with 4mm galvanised steel wire as per drawing andMoRT&H Technical specifications clause 2503.3.

Construction of Embankment with Material Obtained from Borrow Pits Construction of embankment with approved material obtained from borrow pits with all lifts, 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 MoRT&H Technical Specification clauses of section 300