Periodical maintenance of Sandhapattan Bharol Basahi Banwar Kotli road (MDR-057) Major District Road under Annual Maintenance Plan 2020-21

Amount

Providing, laying, spreading and compacting stone aggregates by manual means of specific sizes to water bound macadam specification including spreading in uniform thickness, hand packing, rolling with three wheel 80-100 kN (eighty-hundred kilo newton) static roller in stages to proper grade and camber applying and brooming, stone screening/ binding materials to fillup the interstics of course aggregate watering and compacting to the required density Grading-2 (two) as per technical specification clause 405 complete within all leads, lifts, carriage of material and other incidentials charges.

Construction of un-reinforced, dowel jointed at expansion and construction joint only, plain cement concrete pavement mecnically mixed and vibrated and curign complete, thickness as per design, over a prepared sub base, with 43 (forty three) grade cement or any other type as per Clause 1501.2.2 M30 (Grade), coarse and fine aggregates conforming to IS:383, maximum size of coarse aggregate not exceeding 20mm, mixed in a concrete mixer of not less than 0.2 cum (zero point two cubic metre) capacity and appropriate weigh batcher using approved mix design, laid in approved fixed side formwork (steel channel, laying and fixing of 125 (one hundred twenty five) micron thick polythene film, wedges, steel plates including levelling the formwork as per drawing), spreading the concrete with shovles, rakes, compacted using needle, screed and plate vibrators and finished in continuous operation including provision of contraction and expansion, construction joints, applying debonding strips, primer, sealant, dowel bars, near approaches to bridge/culvert and construction joints, admixtures as approved, curing of concrete slabs for 14-days, using curing compound (where specified) and water finishing to lines and grade as per drawing and technical specification clause 1501 complete within all leads, lifts, carriage of material and other incidentials charges.

Providing, laying, spreading and rolling of built-up spray grout layer using bitumen (S-90)/ VG-10 over prepared base by manual means consisting of a two layer composite construction of crushed coarse aggregates using motor grader for aggregates. Key stone chips spreader may be used with application of bituminous binder after each layer, and with key aggregates placed on top of the second layer to serve as a base, conforming to the line, grades and cross-section specified, the compacted layer thickness being 75mm (Seventy five millimetre) as per Technical Specification Clause 505 including haulage of material in all leads and lifts by all modes of transportation.

Providing and applying tack coat with bitumen emulsion (RS-1) using emulsion distributor @ 0.275 kg/sqm (at the rate of zero point two seven five kilogramme per square metre) on the prepared dry and hungry bitumenous surface cleaned with Hydraulic broom as per technical specification clause 503 including haulage of material in all leads and lifts by all modes of transportation.

Providing and Laying 30 mm ( Thirty millimetre) thick bituminous concrete with 100-120 (Hundred - one hundred twenty) TPH batch type HMP producing an average output of 75 (Seventy five) tonne per hour using crushed aggregate of specified grading, premixed with bituminous binder VG-10 @ 5.50 (at the rate of five point five zero) per cent of mix and filler, transporting the hot mix to work site, laying with a hydrostatic paver finisher and alignment, rolling with smooth wheeled, vibratory and tandem rollers to achieve the desired compaction as per job mix formula and MORTH specification Cluase 509 including haulage of material in all leads and lifts by all modes of transportation.

YUDHVIR SINGH