AR AND MO IRT Mandhala, District Solan , HP Sub Head Metalling and Tarring of 1/5th Road for the year 2020-2021.

Amount

Scarifying the existing bituminous road surface to a depth of 150 mm and disposal of scarified material with a lift upto all leads and lifts as per Technical Specification Clause 301.4. including carriage of material in all leads and lifts.

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 dry and hungry bituminous surface cleaned with Hydraulic broom as per Technical Specification Clause 503. including carriage of materialin all leads and lifts.

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 503.By Mechanical Means (I) Bitumen (S-90 ) including carriage of material in all leads and lifts.

Providing, laying, spreading and compacting stone aggregates of specific sizes to water bound macadam specification including spreading in uniform thickness, hand packing, rolling with smoothwheel roller 80-100 kN in stages to proper grade and camber, applying and brooming, stone screening/binding materials to fillup the interstices of coarse aggregate, watering and compacting to the required density grading 1 as per Technical Specification Clause 405. By Mechanical Means including carriage of material in all leads and lifts.

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 By Mechanical Means Type=B Bitumen (S-90) including carriage of material in all leads and lifts.

Rafia khan

Naranjan Dass