tender for general-poovar gp 2024-25 proj no.254/25-oottukuzhi road retarring balance portion-general civil work - retarring 2 3.5.1:excavation in cutting in soil by manual means with lead upto 50 m
excavation for roadway in soil using manual means for carrying of cut earth to embankment site with a lift upto 1.5 m and lead upto 50 m as per technical specification clause 302.3 3 od470166/2024-2025:filling with quarry muck filling up low lying and water logged areas with local material/ quarry muck, spreading in layers, leveling the top at site and consolidation by ramming, etc complete for improving the cbr value of subgrade 4 4.9:wet mix macadam
providing, laying, spreading and compacting graded stone aggregate to wet mix macadam specification including premixing the material with water at omc in mechanical mixer (pug mill), carriage of mixed material by tipper to site, laying in uniform layers in sub-base/base course on a well prepared sub-base and compacting with smooth wheel 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 5 5.5.b.2a:modified penetration macadam 75 mm thick using bitumen s-65
construction of penetration macadam over prepared base by providing a layer of compacted crushed coarse aggregate using chips spreader with alternate applications of bituminous binder and key aggregates and rolling with a three wheel 80-100 kn static roller to achieve the desired degree of compaction as per technical specification clause 506.
(b) 75 mm thick :- (ii) bitumen (s-65) 6 5.1.1a:prime coat :- low porosity
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 7 5.2.3a:tack coat
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 granular surfaces treated with primer & cleaned with hydraulic broom as per technical specification clause 503. 8 5.2.1a:tack coat
providing and applying tack coat with bitumen emulsion (rs-1) using emulsion distributor at the rate of 0.20 to 0.25 kg per sqm on the prepared bituminous surface cleaned with hydraulic broom as per technical specification clause 503. 9 5.9.1.2a:20mm thick open-graded premix carpet using bituminous (penetration grade/modified bitumen) binder - bitumen s-65
providing, laying and rolling of open-graded premix carpet of 20 mm thickness composed of 13.2 mm to 5.6 mm 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 80-100 kn static roller capacity, finished to required level and grades to be followed by seal coat of either type a or type b or type c as per technical specification clause 508.
case - i by manual means
(ii) bitumen (s-65) 10 5.12.a.3.2a:seal coat - manual means - type c - bitumen s-65
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 - iii : type c
(ii) bitumen (s-65)