PDNA/ Dima Hasao/01

Clearing and Grubbing Road Land Clearing and grubbing road land including uprootingwild vegetation, grass, bushes, shrubs, saplings and trees of girth upto 300mm, removal of stumps of such treescut 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 150mm in thickness as per Technical Specification Clause 201. (i) By Manual Means (b) In area of thorny jungle

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

Granular Sub-base with Well Graded Material (Table 400.1) 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.

ii) WBM Grading 2 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 2 as per Technical Specification Clause 405. A) By Manual Means

Water Bound Macadam Sub-base/base iii) 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 Technical Specification Clause 405.

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 (Provided only on WBM surface)

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 dry and hungry bituminous surface cleaned with Hydraulic broom as per Technical Specification Clause 503.

20 mm thick Open-Graded Premix Carpet using Bituminous (penetration grade/ modified bitumen) Binder Providing, layingandrollingofopen-graded premix carpet of 20mm thickness composed of 13.2mm to5.6mm aggregates either using penetration 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 80-100kN static roller capacity. finished to required level and grades to be followed by sealco at of either Type A or Type B or Type C as per Technical Specification Clause 508 Case I: By Manual Means iv) Crumb Rubber Modified Bitumen

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, Type B and Type C as per Technical Specification Clause 510. A) By Manual Means Case-1: Type A iv) Crumb Rubber Modified Bitumen

Inter locking concrete Block pavement i) Providing and laying interlocking concrete block pavement with M40 grade grade of concrete blocks having thickness 80mm as per technical specification clause 1504 complete including carriage.

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. Excavated material to be used in embankment with a lift upto 3m and lead of 50 m (average lead 25 m) as per Technical Specification Clause 307

Excavation of Structures Earthwork in excavation of foundation structure upto Im depth as per drawing and technical specification clause 1104 including setting out, construction of shoring and bracing removal of stumps and other deleterious matter, dressing of sides and bottom and backfilling with approved materials

Plain cement concrete M10 (1:3:6 nominal mix) in leveling crouse below foundation of head walls as per drawing and technical specification clause 1109

Stone masonry work in cement mortar in foundation of head walls complete as per drawing and Technical Specifications clause 1109

Providing and laying rainforced cement concrete pipe NP3 for culvert on first class bedding of granullar material in single row including fixing collar with cement mortar 1.2 but excluding excavation, protection works, backfilling, concrete and masonry work in head wall and parapet Clause 1106 A. 1000.00mm dia.

Plastering with cement mortar (1.3) on brick work in sub-structure as per Technical specifications Clause 6133

Stone masonry work in cement mortar for substructure complete as per drawing and Technical specification. Clause 702, 704, 1202 &1204 III. (Random Rubble Masonry) In cement morter (1:4)

Providing weepholes in brick masonry/stone plain/reinforced concrete abutment. wing wall, return wall with 100 mm masonry. dia AC pipe extending through the full width of the structures with slope of 1(V):20(H) towards drawing face complete as per drawing and technical specification Clauses 614, 709,1204.3.7

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