REPAIR/ RESURFACING OF CERTAIN ROADS TO OTM, MD ACCN AND MES AREA OF B/R-II SUB DIVISION IN WEST SIDE OF LEHL MARG UNDER GE SOUTH BINNAGURI

Scarifying or picking gravelled, macadam or bituminous macadam surfaces in area exceeding 400 Sqm and depth exceeding 50 mm but not exceeding 100 mm deep including removing stacking and deposing off, complete all as specified and directed by Engineer-in-charge.

Screening road metal, Chippings, etc. on the site of the work, when specially ordered, including removing screened materials clear of screen and stacking in separate heaps for measuring (Materials from both sides of screen measured)complete all as specified and directed by Engineer-in-charge.

M&L for 7.5cm thick (compacted thickness) WBM, with coarse aggregate of granite, trap or Basalt of grading 2 (63 to 40mm size), or of grading 3 (50 to 20 mm size) spread, rolled and consolidated to gradient and camber with 8 to 12 tone power roller, complete all as specified and directed by Engineer-in-charge.

M&L for preparing un-surfaced water bound macadam by brushing with wire brushes for removing caked etc sweeping with brooms and finally fanning the cleaned surface with gunny bags to remove all loose dirt etc, applying evenly a prime coat of cationic bitumen emulsion (SS-1) conforming to IS : 8887 at a rate of application of 0.70 - 1 kg/sqm on surface of WMM/WBM as specified in table 500-3 of Morth specification for road and bridge work 2013 using mechanical sprayer, complete all as specified and directed by Engineer-in-charge.

M&L for repairs to potholes of any depth not exceeding 1.0 sqm each including sweeping free from dust & mud or water, scoring sunken surfaces in road, path etc, cutting around edge to at least 25 mm in depth, making good by applying tack coat with cationic emulsion @5 kg per 10 sq m, putting in premixed bituminous, well rammed and sealed with binder 9.8 kg per 10 sq m, blinded with 0.09 cu m of stone chippings, 6.3 mm size and again well rammed (including supply of premixed macadam, binder and chippings) depth of potholes exc 30 mm complete all as specified and directed by Engineer-in-Charge.

M&L for premix bituminous, macadam laid/rolled and compacted to required gradient and camber (consolidated thickness 75mm or less) using paving bitumen Vg-30 @ 4% (minimum) by the weight of total mix of any penetration compacted to required gradient and camber with 8 to 12 tone power roller, complete all as specified and directed by Engineer-in-charge. NOTE : (i) No extra allowances shall be admissible to the contractor if the bitumen content is required more than 4% by the weight of total mix as per approved design. The contractor shall quote the rate accordingly.

M&L for applying evenly a tack coat of cationic bitumen emulsion (RS-1) conforming to IS : 8887 at a rate of application of 0.20 - 0.30 kg/sqm on bituminous surface as specified in table 500-5 of Morth specification for road and bridge work 2013, using mechanical spraye after cleaning of existing surface by air compressor to remove all loose dirt etc., complete all as specified and directed by Engineer-in-charge

M&L for bituminous premix asphaltic semi dense concrete 40mm consolidated thickness (minimum) with 5.5% binder content of paving bitumen Gde-VG-30 by weight of total mix, rolled and compacted, mixed in mechanical hot mixed plant and pre-mixed material laid with mechanical paver, finished including rolling to required gradient and camber with 8 to 12 tonne power roller to required compaction complete all as specified in the relevant clauses of SSR Part-I (2009) and, complete all as specified and directed by Engineer-in-charge Note : (a) Rate deemed to be included for making good of any undulation/damages in wearing surfaces, where semi sense asphaltic concrete to be laid. (b) Semi dense asphaltic bituminous concrete shall be designed as specified and binder content shall be provided as per design mix, contractor shall quoted his rates considering the bitumen contents as 5.5%. Any variation in binder content on minus side shall be adjusted at the rate of Rs 50.00 per kilogram of binder but variation in binder plus side shall not be paid extra contractor shall quote accordingly.

M&L for 2.5 mm thick painting to road surfaces as in lines, dashes, arrows, letters , zebra crossing etc on roads, pavements and like with thermoplastic road marking paint @ 5 kg/Sqm and applying glass beads @ 300 gms/Sqm over painted surfaces while the painted surfaces are hot by mechanical means including cleaning surfaces, complete all as specified and directed by Engineer-in-charge. (Note. The painting shall be carried out through mechanical appliances by the company's approved applicatior).

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