Renovation of ring road and patch repairs of internal colony roads ABCD E and F type at SGTPS MPPGCL Birsinghpur

Renewel work with 20mm thick open-Graded premix Carpet & type B Seal Coat including patch repair using Bituminous (penetration grade/modified bitumen) Binder Providing, laying and rolling of open-graded premix carpet of 20 mm thickness composed of 13.2 mm size @ 0.18 cum per 10 sqm and 11.2 mm size @ 0.09 cum per sqm aggregates using VG 30 grade bitumen as per clause 504 including leveling course as an integral part of PMC followed by seal coat type B as per clause 510 to required line, grade and level to including mixing in a suitable plant, laying and rolling with a three wheel 80-100 kN staticn roller capacity, finished to required level and grades including repair to pot holes with BM prior to PMC by removel of failed material, trimming the sides of vertical and levelling the bottom, cleaning the same with compressed air or any appropriate method filled with bituminous mixed material with bitumen content 3.5%, bitumen emulsion prime coat at the bottom and bitumen emulsion tack coat for pot hole as well as premix carpet area as per technical specification(Note:- This item is aplicable for reparing of pot holes when single pot hole of size less than 10 sqm is to be repaired)

Repair of Pot Holes, Patch Repair for Providing, laying and rolling of built-up-spray grout layer over prepared base consisting of composite construction of compacted crushed coarse aggregates and key stone chips with application of bituminous binder after each layer, and with key aggregates placed on top of the subsequent layer to serve as a Base conforming to the line, grades and cross-section specified, (number of layers of coarse aggregate shall be as per site requirement).

Providing and applying primer coat with bitumen emulsion on prepared surface of granular base including clearing of road surface and spraying primer @ 1.05 kg/m2 complete as per clauses - 500 (MORT&H).

Providing and applying tack coat with catonic bitumen emulsion (RS-1) using emulsion pressure distributor on the prepared bituminous/ granular surface cleaned with mechanical broom and as per relevant clauses of section-503 of specifications @0.30 kg per sqm (dry & hungry bituminous surfaces /granular surfaces treated with primer) 560+1368= 1928

Open - Graded Premix Surfacing Providing, laying and rolling of open - graded premix surfacing of 20 mm thickness composed of 13.2 mm to 5.6 mm aggregates either using penetration grade bitumen or cut-back 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 smooth wheeled roller 8-10 tonne capacity, finished to required level and grades all complete as per clause 510 of specification Mechanical method using Penetration grade Bitumen and HMP of appropriate capacity not less than 75 tonnes/hour

Seal Coat Providing and laying seal coat sealing the voids in a bituminous surface laid to the specified levels, grade and cross fall using Type A and B seal coats all complete as per clause 511 of specification Case - II : Type B (Providing and laying of premix sand seal coat with HMP of appropriate capacity not less than 75 tonnes/ hours using crushed stone chipping (aggregate shall pass 2.36mm seal and retained to 180 micron sieve) and penetration bitumen of suitable grade all complete as per clause 511 of specification

R. L. TIWARI

RAGHVENDRA SINGH

Praveen Singh

Tirupati Build-Con Private Limited