REPAIRS/RESURFACEING TO CERTAIN INTERNAL ROADS AT DAD RESIDENTIAL AND DGQA COMPLEX UNDER GE STM

Amount

BOQ UPLOADED ON 17 Dec 2024

SCHEDULE "A" PART-I (REPAIRS TO ROADS AND ALLIED WORKS)

Repairs to potholes any depth 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 atleast 25mm in depth, making good by applying tack coat of paving bitumen of Grade VG-30 at 5 kg per 10 sq m, putting in premix as specified for SDAC well rammed and sealed with binder 9.8 kg per 10 sqm using paving bitumen binded with 0.09 cum of stone chippings 6.3mm size and again well rammed (including supply of SDAC) depth of potholes exceeding 30mm complete all as specified and as directed.

Preparing Unsurfaced WBM surfaces by brushing with wire brushes for removing caked mud, loose materials etc., sweeping with mechanical blower or brooms to remove all loose dirt, materials etc. and applying evenly using pressure sprayer for priming / tack coat with bituminous primer of paving bitumen of Grade VG-30 at 10 kg / 10 Sqm over WBM surfaces/pot hole surfaces complete all as specified and as directed.

Preparing black top surfaces by brushing with wire brushes for removing caked mud, loose materials etc., sweeping with mechanical blower or brooms to remove all loose dirt, materials etc., and Applying evenly using pressure sprayer a priming / tack coat with bituminous primer of paving bitumen of Grade VG-30 at 5 kg / 10 Sqm over bituminous surfaces complete all as specified and as directed. complete all as specified and as directed

Bituminous premix semi-dense asphaltic concrete (SDAC), 40mm consolidated thickness with 5.5% minimum binder content by weight of total mix, (paving bitumen VG-30) and filler of 2% cement, rolled and compacted to required camber and gradient complete using mechanical paver and rolled to a uniform, smooth surface using Tandem vibratory roller complete all as specified and as directed.

(a) Contractor shall quote his rate by considering 5.5% bitumen content. If it is less than 5.5% by weight of total mix, the amount shall be recovered for the less weight of binder only at the rate of Rs 42/- per Kg if technically acceptable. No other claim whatsoever on account of this will be allowed.

(b) No price adjustment shall be applicable if excess quantity of binder content is used / approved in the execution of work under this item.

(c) Cement shall be used as filler at a minimum of 2% by weight of total mix. In the event of variation in the mix design in the percentage of filler content on plus side, nothing extra shall be paid.

(d ) The coarse aggregate for SDAC shall be granite stone.

Scarifying or picking gravelled,mecadam or bituminous macadam of depth not exc 50 mm deep surface in area not exc 400 sqm

Premix Dense Bituminous Macadam (DBM), as in profile layer, with grading 2 of IRC laid in layers of 75mm or less (consolidated) thickness using 4.0% binder content by weight of total mix, with paving bitumen of grade VG-30 using hot mix plant spread, rolled and compacted to required camber and gradient complete using mechanical sensor paver and rolled to a uniform, smooth surface using Tandem vibratory roller complete all as specified and as directed.

Preparing road surface including cleaning the road surface of all dirt, seals, oil, grease and foreign material etc and applying 2.5mm thick road marking strips (Retro reflective) of specified shade/colour using hot thermoplastic material conforming to IS-164(1981) by fully automatic thermoplastic paint applicator machine fitted with profile shoe, glass beads dispenser including glass beads, propane tank heater and profile shoe heater, driven by experienced operator in accordance with manufacturer’s instructions all as per BS EN 1871, BS EN 1423 and BS EN 1424 complete as specified and directed.

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