ZONAL CONTRACT IN PATCH REPAIR AND MAINTENANCE OF ROAD UNDER PWD SUB DIVISION NO. 01 UMARIA

3.9 Removal of Unserviceable Soil with Disposal up to 1000 meters Removal of unserviceable soil including excavation, loading and disposal up to 1000 meters lead but excluding replacement by suitable soil which shall be paid separately as per clause 305.

3.18 Surface Drains in Soil Construction of unlined surface drains of average cross sectional area 0.40 sqm in soil to specified lines, grades, levels and dimensions to the requirement of clause 301 and 309. Suitable Excavated material to be used in embankment within a lead of 50 metres as per relevent clauses of section-300.

4.3 Providing, laying, spreading and compacting graded stone aggregate to wet mix macadam specification including premixing the Material with water at OMC in mechanical mix plant carriage of mixed Material by tipper to site, laying in uniform layers with paver in sub- base / base course on well prepared surface and compacting with vibratory roller to achieve the desired density in accordance to Table No. 400-12, 400-13 and as per clause of section 406 of specifications. by Sensor paver

Deduction for item no 4.3 if sensor paver is not used

4.2 Crusher Run Macadam Sub Base/Base Course Providing crushed stone aggregate, depositing on a prepared surface by hauling vehicles, spreading and mixing with a motor grader, watering and compacting with a vibratory roller as per clause 410 to form a layer of sub-base/Base in accordance to Table No. 400-14, 400-15 and as per clause of section 407 of specifications. (ii) For 37.5 mm maximum size

5.3 Providing and applying tack coat with catonic bitumen emulsion using emulsion pressure distributor on the prepared bituminous/granular surface cleaned with mechanical broom and as per relevant clauses of section-503 of specifications. (i) @ 0.25 kg per sqm (normal bituminous surfaces)

5.9 Open - Graded Premix Surfacing Providing, laying and rolling of open - graded premix surfacing of 20 mm thickness composed of 13.2 mm to 5.6 mm aggregates either using penetration grade bitumen or cut-back 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 smooth wheeled roller 8-10 tonne capacity, finished to required level and grades all complete as per clause 510 of specification. (i) Case - I: Mechanical method using Penetration grade Bitumen VG 30 and HMP of appropriate capacity not less than

5.11 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 and B seal coats, all complete as per clause 511 of Specification. (ii) Case - II : Type B (Providing and laying of premix sand seal coat using HMP of appropriate capacity not less than 75 tonnes/ hours using crushed stone chipping (aggregate shall pass 2.36mm seal and retained to 180 micron sieve) and penetration bitumen VG 30 of suitable grade all complete as per clause 511 of specification.

10.3 Filling Pot- holes and Patch Repairs with - Bituminous concrete, 40mm. (Removal of all failed material, trimming of completed excavation to provide firm vertical faces, cleaning of surface, painting of tack coat on the sides and base of excavation as per clause 503, back filling the pot holes with hot bituminous material as per clause 504, compacting, trimming and finishing the surface to form a smooth continuous surface, all as per clause 3004.2) (i) for grading I Material

10.5 Built-Up-Spray Grout Providing, laying and rolling of built-up-spray grout layer over prepared base consisting of a two-layer composite construction of compacted crushed coarse aggregates using motor grader for aggregates key stone chips spreader may be used with application of bituminous binder after each layer, and with key aggregates placed on top of the second layer to serve as a Base conforming to the line, grades and cross-section specified, the compacted layer thickness being 75 mm.