Roads Construction

Amount

2. Stripping excess soil from the shoulder surface to achieve the approved level and compacting with plate compactor at OMC as per drawings and Technical Specification Clauses 1903.

I. Maintenance of Hume Pipe Culvert by way of Clearing, Cleaning, Eroison repair, repairs to cracks, parapet wall and protection work as per drawing and technical specification Clause 1908.

3) WBM Grading 3 Using stone screening Type-B 11.2mm for Gr.III 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 nthe interstices of coarse aggregate, watering and to the required density Grading 3 as per Technical Specification Clause 405. A) By Manual Means

ii) Medium porosity Providing and applying primer coat with Bitumen emulsion (SS-1) on prepared surface of granular base including cleaning of road surface and spraying primer at the rate of 0.90-1.2 kg/sqm using mechanical means as per Technical Specification Clause 502.

iii) Providing and applying tack coat with Bitumen emulsion (RS-1) using emulsion distributor at the rate of 0.25 to 0.30 kg per sqm on the prepared granular surface treated with primer & cleaned with Hydraulic broom as per Technical Specification Clause 503.

Semi-Dense Bituminous Concrete (Providing and laying semi dense concretewith 100-120 TPH batch type HMP producing an average output of 75 tonnes per hour using crushed aggregates of specified grading premixed with bituminous binder @ 4.5 to 5% of mix and filler transporting the hot mix to work site, laying with a hydrostatic paver finisher with sensor control to the reqd. grade, level and alignment, rolling with smooth wheeled, vibratory and tandem rollers to achieve the desired compaction as per MoSRT&H cl. no.508. complete in all respect. A. With hydrated lime/cement as filler (refer table 500-9 of MoSRT&H specification) (I) with 60/70 or VG-30 grade bitumen for grading II (10 mm nominal size)

Painting lines, dashes, arrows, etc. on roads in two coats on new work with ready mixed road marking paint conforming to IS:164 on bituminous/concrete surface, including cleaning the surface of all dirt, dust and other foreign matter, demarcation at site and traffic control as per drawing and Technical Specification Clause 1702.

Sakendra Basumatary

DHANANJAY BASUMATARY