Work Name:VALAPAD GP ANNUAL PLAN 2021-22 PROJECT NO 164/22 SAHAKARANNA ROAD METALLING AND TARRING IN WARD 12
Sl. No.
Item Description
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Tarring
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4.9 : Wet Mix Macadam Providing, laying, spreading and compacting graded stone aggregate to wet mix macadam specification including premixing thematerial with water at OMC in mechanical mixer (Pug Mill), carriage of mixed material by tipper to site, layingin uniform layers in sub-base/base course on a well prepared sub-base and compacting with smoothwheel 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. By Mechanical Means with 1 km lead
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75.5.1.1pb : Prime Coat - Low porosity - With Packed Bitumen Rates 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
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75.5.2.3pb : Tack Coat - With Packed Bitumen Rates Providing and applying tack coat with Bitumen emulsion (RS-1)using emulsiondistributor at the rate of 0.25 to 0.30 kg per sqm on the prepared granular surfaces treated with primer & cleaned with Hydraulic broom as per Technical Specification Clause 503.
Providing, laying and rolling of opengradedpremix carpet of 20 mm thickness composed of 13.2 mm to 5.6 mm aggregateseither using penetration grade bitumen or emulsion to required line, grade and level toserve as wearing course on a previously prepared base, using HM Plant attached withopen pugmilll.Heating of aggregate at 150 degree Celsius to 170 degree Celsius, thentransferring the hot aggregate to pugmill and add shredded plastic @10.22 kg/100m2mixing well to form a uniform thin layer of plastic over - hot aggregate and adding hotbitumen (150 to 165 degree Celsius) @ 13.578 Kg/10m2 and mix well, laying and rollingwith a. three wheel 80-100 kN static roller capacity, finished to required level and gradesto be- followed by seal coat of either Type A or Type B or Type C as per TechnicalSpecification Clause 508 Case - I By Manual Means
(II) Bitumen (S-65)
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75.5.12.A.3.2pb : Seal Coat - Manual Means - Type C - Bitumen S-65 - Packed Bitumen Rates 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 CaseIII :Type C (II) Bitumen (S-65)
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