|
| 1 | Maintenance of WBM road including filling up of pot holes, ruts and rectifying corrugated surface, damaged edges and ravelling as per MoRTH specification Clause 404 |
| 2 | Repair to pot holes and removal of loose material, trimming of sides, cleaning of surface by providing tack coat, 13mm thick pre-mix carpet and seal coat type B as per MoRTH specificationClause 3004.2 |
| 3 | Making up loss of material/irregularities on shoulders to the design level by adding fresh approved selected soil and compacting it with appropriate equipment at OMC upto a lead of 1000 mas per MoRTH specification Clause 3003 |
| 4 | Restoration of rain cuts with soil, moorum gravel or a mixture of these, clearing the loose soil, benching for 300mm width laying fresh material in layers not exceeding 250 mm and compaction with plate compactor or power rammer to restore the original alignment, level and slopes as per drawings and MoRTH specifications Clause 3002 |
| 5 | Construction of granular sub-base by providing well graded material, spreading in uniform layers with Tractor Mount Grader on prepared surface, mixing by mix in place method with rotavatorat OMC, and compacting with smoothwheelroller to achieve thedesired density, complete as per MoRTH Specification Clause 401. Grading II |
| 6 | Providing, laying, spreading and compacting graded stone aggregate to wet mix macadam specification including premixing thematerial with water at OMC in mechanical mixer (Pug Mill), carriage of mixed material by tipper to site, layingin uniform layers in sub-base/base course on a well prepared sub-base and compacting with smoothwheel roller of 80 to 100kN weight to achieve the desired density including lighting, barricading and maintenance of diversion, etc as per Tables 400-12 & 400-13 and MoRTH Specification Clause 406. |
| 7 | Construction of unlined surface drains of average cross-sectional area 0.40 sqm in soil to specified lines, grades, levels and dimensions. Excavated material to be used in embankment with a lift upto 3m and lead of 50 m (average lead 25 m) as per MoRTHSpecification Clause 309. (ii) Mechanical Means |
| 8 | Providing and applying tack coat with Bitumen VG-10using bitumen pressure distributor at the rate of 0.35 to 0.45 kg per sqm on the prepared granular surfaces treated with primer & cleaned with Hydraulic broom as per MoRTH Specification Clause 503 and IRC-16-2008. |
| 9 | Providing, laying and rolling of close-graded premix surfacing material of 20mm thickness composed of 11.2 mm to 0.9 mm (Type-A) or 13.2 mm to 0.9mm (Type-B) aggregates using Viscosity grade bitumen 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 8-10 kN static roller and finishing to required level and grades as per MoRTHSpecification Clause 508.By Mechanical Means(ii)Bitumen (VG-30) |
