Periodic maintenance of Diana Park to Ghamarda road (Other than PMGSY road ) under Annual maintenance Plan for the year 2020-21

Amount

Providing, laying, spreading and rolling of built-up spray grout layer over prepared base 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 (S-90/ VG-10) 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 of MORD by manual means including carriage of material with in all leads and lifts and other incidental complete as per direction of Engineer-in-Charge.

Providing and applying tack coat with bitumen emulsion (RS-1) using emulsion distributor at the rate of 0.25 to 0.30kg/sqm (zero point two five to zero point three zero kilogramme per square metre) on the prepared granular surfaces treated with primer and cleaned with hydraulic broom as per technical specification clause 503 including carriage of material within all leads, lifts and other incidentals complete in all respect as per direction of Engineer-in-Charge.

Providing, laying and rolling by mechanical means with bitumen (VG-10) @ 1.46 kg/sqm (at the rate of one point four six kilogram per square metre) of open graded premix carpet of 20mm (twenty millimetre) thickness composed of 13.2mm to 5.6mm (thirteen point two millimetre to five point six millimetre) aggregates either using penetration grade bitumen to required line, grade and level to serve as wearing course on a previously prepared base, including mixing in suitable plant, laying and rolling with a three wheel 80-100 kN (eighty-hundred kilo newton) static roller capacity, finished to requried level and grades to be followed by seal coat of Type-B as per Technical Sepcification Clause 506 including carriage of material within all leads, lifts and other incidentals complete in all respect as per direction of Engineer-in-Charge.

Providing and laying seal coat Type-B by mechanical means sealing the voids in a bituminous surface laid to the sepcified levels, grade and crossfall using Bitumen (VG-10) @ 0.68kg/sqm. (at the rate of zero point six eight kilogram per square metre) as per Technical Specificaiton Clause 508 including carriage of material within all leads, lifts and other incidentals complete in all respect as per direction of Engineer-in-Charge.

Sohan lal