Re-carpeting of major works in IIT Madras

Amount

Milling the bituminous pavement surface up to a depth of 25 mm using a milling machine, to make a uniform surface without disturbing the base/binder course to the desired camber and profile, cleaning the milled surface, including cost of all labour charges and hire charges of machineries etc. complete. (Disposal of milled material will be paid separately).

Providing and laying Dense Graded Bituminous Macadam using crushed stone aggregates of specified grading, premixed with bituminous binder and filler, transporting the hot mix to work site by tippers, laying with paver finisher equipped with electronic sensor to the required grade, level and alignment and rolling with smooth wheeled, vibratory and tandem rollers as per specifications to achieve the desired compaction and density, complete as per specifications and directions of Engineer-in-Charge. 50 to 100 mm average compacted thickness with bitumen of grade VG-30 @ 4.5% (percentage by weight of total mix) and lime filler @ 2% (percentage by weight of Aggregate) prepared in Batch Type Hot Mix Plant of 100-120 TPH capacity.

Demolishing cement concrete manually/ by mechanical means including disposal of material within 50 metres lead as per direction of Engineer - in - charge. Nominal concrete 1:3:6 or richer mix (i/c equivalent design mix)

Providing and applying tack coat using bitumen emulsion RS conforming to IS:8887, using emulsion pressure distributer including preparing the surface & cleaning with mechanical broom.On bituminous surface @ 0.25kg/Sqm. As per MORTH specification No.503.

Providing and laying bituminous concrete using crushed stone aggregates of specified grading, premixed with bituminous binder and filler, transporting the hot mix to work site by tippers, laying with paver finisher equipped with electronic sensor to the required grade, level and alignment and rolling with smooth wheeled, vibratory and tandem rollers to achieve the desired compaction and density as per directions of Engineer-in-Charge. 40/50mm compacted thickness with bitumen of grade [email protected]% (percentage by weight of total mix) and lime filler @3%(percentage by weight of aggregate) prepared in Batch Type Hot Mix Plant of 100-200 TPH capacity. Rate including laying tavt coat vide clause 503 of MORTH specifications (Table 500-5) for road and Bridge Works, Fifth Revision, 2013.

Providing and laying of hot applied Thermoplastic compound 2.5mm thick including reflectorizing glass beads @ 250 gms per Sqm area, thickness of 2.5mm is exclusive of surface applied glass beads as per IRC:35. The finished surface to be level, uniform and free from streaks and holes etc. complete as per MoRT&H specification No.803.

Providing and fixing of reflective road studs ‘Category A’ Raised Pavement Markers made out of polycarbonate / methyl methacrylate/ ABS moulded body confirming to ASTM D 788 and reflective panels with micro prismatic lens capable of providing total internal reflection of the light entering the lens face with retro reflectance and chromaticity values conforming to ASTM D4280. The reflective raised pavement markers shall also confirm to the MORTH Circular No RW/NH/33023/10-97 – DO III Dt 11.06. 97. The height, width and length shall not exceed 50 mm, 100 mm and 100 mm and with minimum reflective area of 13 Sq.cm on each side and the slope to the base shall be 35 +/- 5 degree. Each reflector shall have a CIL not less than values specified in the Table 2 of said MORTH circular. The strength of detachment of the integrated cylindrical shanks, (of diameter not less than 19 +/- 2 mm and height not less than 30+/- 2 mm) from the body is to be a minimum value of 500 Kgf. Fixing will be by drilling holes on the road for the shanks to go inside, without nails and using epoxy resin-based adhesive as per manufacturer’s recommendation and complete as directed by the engineer. The marker shall support a load of 13635 Kg tested in accordance with ASTM D4280 and confirming to IRC 35-2015 guidelines and MORT&H specification 804 etc., complete.

Disposing the construction debris including waste generated by milling, dismantling the concrete and other debris etc., out side the campus. For measuring the quantity of debris, actual measurement of truck will be taken and 20% volume will be deducted towards voids.