REPAIR TO ROAD UNDER AREA OF AGE B/R KOLKATA UNDER GE (I) CGN) KOLKATA

Amount

Scarifying or picking gravelled, macadam or bituminous macadam surfaces in area not exceeding 400 sqm, depth of pothole not exceeding 50 mm including rolling over the broken surfaces using 8 to 10 tonnes power roller to required camber and gradient complete all as specified and as directed.

Removing excavated material exceeding 1.5 KM but not exceeding 5KM and depositing where directed at a level n exc. 1.5 m above the starting point complete all as specified and as directed.

Preparing existing black top surfaces by brushing with wire brushes for removing caked mud etc., sweeping with brooms and finally fanning the cleaned surface with gunny bags to remove all loose dirt etc. complete all as specified and as directed.

Material and labour for applying tack coat of cationic Bitumen Emulsion (RS-1) conforming to IS: 8887 at the rate of 0.5 kg per sqm on existing bituminous surface as specified in Table 500-5 of MOrth specification for road and bridge work 2013. using mechanical sprayer after cleaning of existing surface as specidied.and as directed.

Material and labour for bituminous macadam not exceeding 75 mm thickness (compacted thickness) using hot mix plant and mechanical paver with 4% binder (paving grade bitumen VG-30 grade) content by weight of total mix, rolled and compacted with power roller 8 to 10 tonnes to required camber and gradient complete all as specified and as directed. Note :- (i) Bituminous macadam shall be laid using self propelled hydrostatic paver finisher and preparation of mix shall be using hot mix plant and transporting the mix in tipper. (ii) The exact bitumen content required shall be determined as per IRC 27: 2009. The adjustment in rate due to variation in quantity of bitumen if any shall be priced at the rate of ₹55 per kg.

Material and labour for applying tack coat of cationic Bitumen Emulsion (RS-1) conforming to IS: 8887 at the rate of 0.3 kg per sqm on existing bituminous surface as specified in Table 500-5 of MOrth specification for road and bridge work 2013. using mechanical sprayer after cleaning of existing surface as specidied.and as directed.

Material and labour for bituminous premix asphaltic semi dense concrete 25 mm (compacted thickness) using graded crushed stone aggregate premixed with binder (paving grade bitumen VG-30 grade) @ 5% by weight of total mix & hydraulic lime filler, rolled and compacted to required camber and gradient complete all as specified and as directed. Note :- (i) Semi dense bituminous concrete shall be laid using self propelled hydrostatic paver finisher and preparation of mix shall be using hot mix plant and transporting the mix in tipper. (ii) The exact bitumen content required shall be determined following the Marshall Mix Design procedure contained in the Asphalt Institute Manual MS-2 (Sixth Edition) as referred in case 3.5.3 of IRC 111: 2009. The adjustment in rate due to variation in quantity of bitumen if any shall be priced at the rate of ₹55 per kg.

Providing and applying 2.5 mm thick road marking strips white or golden yellow, (retro-reflective) of specified shade/ colour using hot thermoplastic material by fully/ semi-automatic thermoplastic paint applicator machine fitted with profile shoe, glass beads dispenser, propane tank heater and profile shoe heater, driven by experienced operator on road surface including cost of material, labour, T & P, cleaning the road surface of all dirt, seals, oil, grease and foreign material etc. complete all as specified and as directed.

Repair to potholes any depth, exe 30 mm and not exceeding 1 sqm each including sweeping free from dust and mud, or water, scoring sunken surfaces in roads, paths, etc., cutting around edges to at least 25 mm in depth, making good by applying tack coat at the rate of 05 kg per 10 Sqm, putting in bituminous macadam well rammed and sealed with bitumen 9.8 kg per 10 sqm blinded with 0.09 cum stone chippings, 6.3 mm size and rolled and compacted with power roller 8 to 10 tonnes to required camber and gradient complete all as specified and as directed.

BINA ENTERPRISE (BID ID -3169669)