Name of Work:Improvement of roads in Hiyanglam. Sub-head: - Improvement of road from Lamjao Makha Leikai to Tejpur 1.50 km.
Sl. No.
Item Description
1
Providing laying and compacting Granular Base/Sub base with naturally occuring Sand Gravel Material free from organic ore other deleterious constituent spreading with Motor Grader and compacted by rolling with power roller of 8-10 capacity in layers not exceeding 150mm (spread thickness)
2
Providing,laying,spreadingandcompactingstone aggregatesofspecificsizestowaterboundmacadam specificationincludingspreadinginuniformthickness, hand packing, rolling with 3 wheeled steel/ vibratory roller in stages to proper grade and camber, applying and brooming requisite type of screening/ binding Materials to filluptheintersticesofcoarseaggregate,wateringand compacting to the required density. A) By Manual Means (i) Grading-I (Aggregate size - 53mm to 22.4mm) (a) UsingScreening CrushabletypesuchasMoorum or Gravel.
3
(ii) Grading-II (Aggregate size - 53mm to 22.4mm) (a) UsingScreening CrushabletypesuchasMoorum or Gravel.
4
Providing, laying and roling 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 of 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 roler 8-10 tonne capacity, finished to required level and grades. Providing and applying primer coat with bitumen emulsion on prepared surface of granular Base including clearing of road surface and spraying primer at the rate of 0.70 kg/sqm using mechanical means.Seal Coat (Providing and laying of premix sand seal coat with HMP of appropriate capacity not less than 75 tonnes/hours using crushed stone chippings 6.7 mm size and penetration bitumen of suitable grade.) (i) Case - II : Type B.
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