BT APPROACH

Earthwork in excavation for structures as per drawing and technical specifications Clause 305.1 including setting out, construction of shoring and bracing, removal of stumps and other deleterious material and disposal upto a lead of 50 m, dressing of sides and bottom and backfilling in trenches with excavated suitable material as per Technical Specification 305 MORD / 304 MORTH

Providing, laying, spreading and compacting graded stone aggregate to Wet Mix Macadam specification including premixing the material with water at OMC in mechanical mixer (Pug Mill), carriage of mixed material by tipper to site, laying in uniform layers in sub-base/base course on a well prepared sub-base and compacting with smooth wheel roller of 80 to 100kN / Vibratory Roller 80-100 kN weight to achieve the desired density including lighting, barricading and maintenance of diversion, etc as per Tables 400.11 & 400.12 and Technical Specification Clause 406 MORD / MORTH for finished item of work.

Providing and applying Primer Coat with bitumen emulsion (SS-1) on prepared surface of granular base including cleaning of road surface and spraying primer at the rate of 0.70-1.0 kg/sqm using mechanical means as per Technical Specification Clause 502 MORD (for use on Wet mix macadam & WBM) etc., complete as per S.S. and as per directions of the departmental authorities. (Low porosity)

Providing and applying Tack Coat with bitumen emulsion using emulsion pressure distributor at the rate of 0.20 kg per sqm on the prepared bituminous/ granular surface cleaned with mechanical broom as per Tech. specification No 503 MORTH.

Providing and laying Bituminous Macadam with 100-120 TPH / 40-60 TPH hot mix plant producing an average output of 75 tonnes/ 37.50 t per hour using crushed aggregates of specified grading premixed with bituminous binder, 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 Tech. specification No. 504 MORTH etc., complete in all respects for finished item of work as per directions of the departmental authorities

Providing and laying Semi Dense Bituminous Concrete with 100-120 TPH batch type hot mix plant producing an average output of 37.5 tonnes per hour using crushed aggregates of specified grading, premixed with bituminous binder @ 4.5 to 5 per cent of mix and filler, transporting the hot mix to work site, laying with a hydrostatic paver finisher with sensor control to the required grade, level and alignment, rolling with smooth wheeled, vibratory and tandem rollers to achieve the desired compaction as per MORTH specification clause No. 508 complete in all respects

Supplying of hot applied thermoplastic road marking compound, 2.5mm thick including reflectorsing glass beads @ 250gms with reflectorising glass beads bituminous surface at 250 gms per sqm area, thickness of 2.5mm is exclusive surface applied glass bead as per IRC:35, the material should be of BERGER company/BERGER equivalent and must comply with the following: a) White index for the product should be in the range of 60-70 when measured against standard reference. The applied panel 7/8 number must be submitted for checking up the white index in the department lab. In case the department approves the white index of any vendor, the department engineer may carryout random checking of the applied products at site against the approved panel. In case of any major deviation, beyond acceptance limit, department reserve the right to cancel or reject the total supplied consingment of the said material and wila compell the vendor has to repalce the full consignment by the desired material as per approved panel at his own cost and additional demurrages may be claimed due to loss of man days (as per the rules of the department) b) Luminance factor of the material should be in the range of 80-85% at 45degree centigrade as per AASTHOM 249. c) Crack resistance: The applied panel cured for 7 days under ambient condition and then should be tested as per BS3262, part-1 1989 and should pass at the range of '0' degree centigrade to '-10' degree centigrade D) Adhesion: Strong E) Softening point:102 degree centrigrade F) Dried film finish: Smooth and uniform G) Night vision: High as directed by the Engineer-in-Charge and confirming to IS:164-1961 (1st revision reaffirmed in 1986) and clause conforming to IRC 35-1997