Upgradation of Rural Road from NH-04 to Khatta Khari at Rangat North and Middle Andaman under PMGSY-III.

PAVEMENT WORK Clearing and grubbing road land Clearing and grubbing road land including uprooting wild vegetation, grass, bushes, shrubs, saplings and trees of girth upto 300 mm, removal of stumps of such trees cut earlier and disposal of unserviceable materials and stacking of serviceable material to be used or auctioned, upto a lead of 1000 m including removal and disposal of top organic soil not exceeding 150 mm in thickness as per Technical Specification Clause 201

Scarifying Existing Bituminous Surface to a Depth of 150 mm by Mechanical Means Scarifying the existing bituminous road surface to a depth of 150 mm and disposal of scarified material with a lift upto 3 m and lead upto 1000 m as per Technical Specification Clause 301.4.

Construction of Embankment with Material Obtained from Roadway Cutting Box cutting or filling in Road embankment in all sorts of soil including spreading the spoils properly over the flank as necessary or on berm to approximate grade & camber and rolling the subgrade with power roller to proper camber and grade as per direction and satisfaction of Engineer-in-charge including uprooting and removing plants and jungles when and where necessary.

Construction of Embankment with Material Obtained from Borrow Pits Construction of embankment with approved material obtained from borrow pits with a lift upto 1.5 m, 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 Technical Specification Clause 301.5

Construction of Subgrade and Earthen Shoulders Construction of subgrade and earthen shoulders with approved material obtained from borrow pits with all lifts and leads, transporting to site, spreading, grading to required slope and compacted to meet requirement of Table 300.2 with lead upto 1000 m as per Technical Specification Clause 303.1.

For modified soil by construction of sub base using GSB III materials Construction of Modified Soil by providing well graded material, spreading in uniform layers with motor grader on prepared surface, mixing by mix in place method with rotavator at OMC, and compacting with smooth wheel roller to achieve the desired density, complete as per Technical Specification Clause 401. Material : 9.5 mm to 4.75 mm @ 35 per cent = 0.447 cum, 4.75 mm to 2.36 mm @ 12.5 per cent = 0.160 cum, 2.36 mm below @ 52.5 per cent = 0.672 cum, Water = 0.100 kilolitre.

Granular Sub-base with Well Graded Material (Table 400.1) GSB grade III Construction of granular sub-base by providing well graded material, spreading in uniform layers with motor grader on prepared surface, mixing by mix in place method with rotavator at OMC, and compacting with smooth wheel roller to achieve the desired density, complete as per Technical Specification Clause 401. Material : 9.5 mm to 4.75 mm @ 35 per cent = 0.447 cum, 4.75 mm to 2.36 mm @ 12.5 per cent = 0.160 cum, 2.36 mm below @ 52.5 per cent = 0.672 cum, Water = 0.100 kilolitre.

Wet Mix Macadam Providing, laying, spreading and compacting graded stone aggregate to wet mix macadam specification including premixing the material with water at OMC in mechanical mixer (Pug Mill). carriage of mixed material by tipper to site, laying in uniform layers in sub-base/base course on a well prepared sub-base and compacting with smooth wheel roller of 80 to 100kN weight to achieve the desired density including lighting, barricading and maintenance of diversion, etc as per Tables 400.11 & 400.12 and Technical Specification Clause 406. Material : Coarse aggregate 45 mm to 22.4 mm @ 30 per cent = 0.399 cum, Aggregates 22.4 mm to 2.36 mm @ 40 per cent = 0.532 cum, Fine aggregate/Crushed sand 2.36 mm to 75 micron @30 per cent = 0.399 cum, water = 0.08 kl.

Prime Coat Low 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 0.70-1.0 kg/sqm using mechanical means as per Technical Specification Clause 502 Material : Bitumen emulsion (SS-1) @ 0.85 kg per sqm.

Tack Coat (i) Providing and applying tack coat with Bitumen emulsion (RS- 1) using emulsion distributor at the rate of 0.20 to 0.25 kg per sqm on the prepared bituminous surface cleaned with Hydraulic broom as per Technical Specification Clause 503. Material : Bitumen emulsion (RS - 1) @ 0.225 kg per sqm.