Maintenance Work on Km. 469.300 To 531.775 Patthalgaon to Kunkuri section NH- 43 (Old NH-78)

Wet Mix Macadam / Interlocking layer laying A Wet Mix Macadam / Interlocking layer laying Using Mechanical Paver (Providing, laying,spreading and compacting graded stone aggregate to wet mix macadam specification including premixing the Material with water at OMC in mechanical mix plant carriage of mixed Material by tipper to site, laying in uniform layers with paver in sub- base / base course on well prepared surface and compacting with vibratory roller to achieve the desired density.)as per clause 406. Note for Item No. 4.14 A use only on prior permission of CE, NH Zone, PWD, Raipur.

Prime coat (Providing and applying primer coat with oil based bitumen emulsion (SS-1, grade confirming to IS:8887) on prepared surface of granular Base including clearing of road surface and spraying primer using mechanical means as per clause 502 & 112. with bitumen emulsion (SS-1, grade confirming to IS:8887) @0.85 kg/sqm

Tack coat Providing and applying tack coat with bitumen emulsion (RS-1, grade confirming to IS:8887) using emulsion pressure distributor on the prepared bituminous/granular surface cleaned with mechanical broom and as per clause 503. on Bituminous surfaces @ 0.25 kg per sqm

Bituminous Macadam (Providing and laying bituminous macadam with 120- 200 TPH higher capacity Batch Type Hot Mix Plant using crushed aggregates of specified grading premixed with bituminous binder VG-40, transported to site, laid over a previously prepared surface with paver finisher to the required grade, level and alignment and rolled as per clauses 501.6 and 501.7 to achieve the desired compaction) as per clause 504 & 112. With sensor paver finisher (ii) for Grading-II (19 mm nominal maximum size, bitumen content minimum 3.40%)

Close Graded Premix Surfacing/Mixed Seal Surfacing (Mechanical means using HMP of 120 - 200 TPH capacity . Providing, laying and rolling of close-graded premix surfacing material of 20 mm thickness using viscocity grade bitumen VG-40 to the 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 and finishing to required level and grade. ) as per clause 508 & 112. With sensor paver finisher Type A (11.2 mm to 0.09 mm size aggregates)

Granular Shoulders (Construction of granular shoulder at top 150mm of earthen shoulder shall be well graded mix of at least 30% of granular sub-base material of grading-III as per clause 401 and moorum/gravel or soil and combination having soaked CBR value of not less than 30%. The granular layer shall be compacted to at least 98% of mix dry density of material as determined as per IS:2720 (Part-B))

Retro- reflectorised Traffic signs (Providing and fixing of retro- reflectorised cautionary, mandatory and informatory sign as per IRC :67 made of retro reflective type sheeting and vide clause 801.3, 2mm thick aluminium sheeting, 3mm/4mm thick Aluminum composite material sheet depending on the size of the sign fixed over back support frame of min 40 x 40 x 5mm Angle mounted on a mild steel circular pipe 65 NB ,3.2 mm thicknness firmly fixed to the ground by means of properly designed foundation with M 15 grade cement concrete 45 cm x 45 cm x 60 cm, 60 cm below ground level as per approved drawing and painting all components of the signs and supports as per clause 7.2 of IRC:67 ) Made of Class-C Micro Prismatic Grade Sheeting of Type-XI (for National Highways and State Highways) (ii) 90 cm equilateral triangle

(vi) 90 cm circular

(xv) 90 cm high octagon