tender for road tarring at kccl , 4 . 11 . 2granular sub-base/base/surface course with local materials ( table 400 . 13 ) by mix in place method normal . construction of granular sub-base by providing local material spreading in uniform layers with motor grader on prepared surface , mixing by mix in place method with rotavator at once and compacting with smooth wheel roller to achieve the desired density complete as per clause 401 . 4 as per technical specification clause 408 . ( ii ) using gravel mix soil . , 4 . 9wet 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 , 75 . 5 . 1 . 1pbprime 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 , 75 . 5 . 2 . 1pbtack coat - with packed bitumen ratesproviding 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 . , 75 . 5 . 2 . 3pbtack coat - with packed bitumen ratesproviding 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 . , 75 . 5 . 9 . 1 . 2pb20mm thick open-graded premix carpet using bituminous ( penetration grade/modified bitumen ) binder -bitumen s-65 - packed bitumen rates 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 befollowed 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 ) , 75 . 5 . 12 . a . 3 . 2pbseal coat - manual means - type c - bitumen s-65 - packed bitumen ratesproviding 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 510a . by manual means case iii : type c