WBPWD/RD/EE/THD/NIT11/26-27/11

Dismantling of Flexible Pavements Dismantling of flexible pavements and disposal of dismantled materials up to a lead of 1000 metres, stacking serviceable and unserviceable materials separately (Reference to MoRT&H's specification clause 202) By Manual Means Granular courses

Compacting Original Ground Compacting original ground supporting sub-grade.Loosening of the ground upto a level of 500 mm below the sub-grade level,watered, graded and compacted inlayers to meet requirement of table300-2 & 300-1 for sub-gradeconstruction (Reference to MoRT&H's specification clause 305.3.4).

Sand Filling in Foundation Trenches Supplying, spreading and compacting sand to required thickness. in layers not exceeding 150 min. to proper gradient and camber. inundation each layer by water and packing and ramming layer by layer to achieve desired compaction, including lighting, guarding barricading and making adequate earthen bundh where necessary. Using Fine sand. The compaction factor for dry. clean sand may be taken as 0.835.

Granular Sub-Base with Graded Material By Plant Mix Method Construction of granular sub-base by providing graded material such as natural sand / pakur variety crushed stone / combination depending upon the required grading spreading in uniform layers with motor grader on prepared surface, mixing by appropriate mechanical mixure (with controlled addition of water), and compacting with vibratory roller to achieve at least 98% of the maximum dry density for the material determined as per IS:2720 (Part 8),complete as per clause 401. Grading shall conform to Table 400-9, 400-10 & 400-11 of MoRT&H's Specification for Road & Bridge Works (5th Revision). Grading-II

Granular Sub-Base with Graded Material By Plant Mix Method Construction of granular sub-base by providing graded material such asnatural sand/crushed gravel/crushedstone/combination depending uponthe required grading spreading inuniform layers with motor grader onprepared surface, mixing byappropriate mechanical mixure (withcontrolled addition of water), and compacting with vibratory roller toachieve at least 98% of the maximumdry density for the materialdetermined as per IS:2720 (Part 8),complete as per clause 401. Grading shall conform to Table 400-9, 400-10 & 400-11 of MoRT&H's Specification for Road & Bridge Works (5th Revision). Grading-III

Wet Mix Macadam Providing, laying, spreading and compacting graded pakur variety stone aggregate conforming to the grading of table 400- 13 revised vide table 2 of IRC : 109 (2015) 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 .The thickness of a single compacted layer shall not be less than 75 mm.(Reference to MoRT&H's specification 406.

Prime Coat Providing and applying primer coat with cationic bitumen emulsion CSS1 grade [Bulk] conforming to IS:8887 on prepared porous granular surface including clearing of road surface and spraying primer using mechanical means @ 0.875 Kg / Sqm. (Reference to MORT&H's specification clause 502).

Providing and applying tack coat with Cationic bitumen emulsion RS1 grade [Bulk] complying with IS:8887 using emulsion pressure distributor on the prepared bituminous / granular surface cleaned with mechanical broom and high pressure air jet (Reference to MORT&H's specification clause 503). i) On Bituminous surface using Bituminous Emulsion RS1 grade [Bulk] @ 0.250 Kg/Sqm.

i) Over granular surface treated with primer using Bituminous Emulsion RS1 grade [Bulk] @ 0.275 Kg/Sqm.

Dense Graded Bituminous Macadam Providing and laying dense graded bituminous macadam with 100-120 TPH batch type HMP using crushed aggregates of specified grading, premixed with bituminous binder(VG-40 Bulk) of approved grade @ 4.0% (min) for Grading -1 and 4.5% (min) for Grading -2 by weight of otal mix and filler(Cement /hydrated lime / Rock dust ) as per table 500-10 and mix design done as per table 500-11and job mix formula as per clause 505.3.3 transporting the hot mix to work site, laying with a hydrostatic paver finisher with sensor control to the required grade, level and alignment, rolling with smooth wheeled, vibratory tandem roller and with pneumatic tyre roller of 12 to 15 tonne weight with a pressure at least 0.56 MPa as directed by E-I-C, and to achieve the desired compaction as per MORT&H specification clause No. 505.3.5 complete in all respects (Reference to MORT&H's specification clause 505). Grading 2 (26.5 mm nominal maximum aggregate size ) Layer Thickness 50-75mm.