Restoration of rain damages on SAKB road in K M 0 0 to 80 400

Amount

Earthwork in excavation for structure 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 up to all leads and dressing of sides and bottom and backfilling in trenches with excavated suitable material in all kinds of soil as per the direction of the Engineer In-charge

Providing concrete for plain/reinforced concrete in open foundations mechanically mixed complete as per drawings and technical specifications Clause 802, 803, 1202 & 1203. P.C.C grade M 10 Nominal mix 1:3.6

Providing and laying of boulder apron laid in wire crates with 4 mm dia GI wire conforming to IS:280 and IS:4826 in 100 mm x 100 mm mesh (woven diagonally) including 10 per cent extra for laps and joints laid with stone boulders weighing not less than 25 kg each as per drawing and technical specifications Clause 1301

Providing weep holes in stone masonry , plain reinforced concrete abutment , wing walls, return walls ,retaining walls with 100mm (Hundred millimetre) diameter, PVC pipe extending through the full width of the structures with a slope of 1 (one) vertical :20 (twenty horizontal) toward drawing face complete as per drawing and M.O.R.D technical specification clause 614,709,1204.3.7 including carriage of all labour equipments and material to various location through all modes of transportation in all leads and lifts as per the direction of the Engineer-in-charge.

Backfilling with granular material behind abutments , wing walls, return walls and retaining walls complete as per drawing and MORD technical specification clause 1204.3.8 including carriage of all labour equipments and material to various location through all modes of transportation in all leads and lifts as per the direction of the Engineer-in-charge

Granular sub-base/base/surface course with Using naturally occuring gravel local materials (Table 400.13) by mix in place method normal Construction of granular sub-base by providing local material spreading in uniform layers with motor grader on prepared surface, mixing by mix in place method with rotavator at once and compacting with smooth wheel roller to achieve the desired density complete as per Clause 401.4 as per Technical Specification Clause 408.

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 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.

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

Providing and applying tack coat with Bitumen emulsion (RS-1) using emulsion distributor at the rate of 0.25 to 0.30 kg per sqm on the prepared granular surfaces treated with primer & cleaned with Hydraulic broom as per Technical Specification Clause 503.

Providing and laying bituminous concrete with 100-120 TPH batch type hot mix plant producing an average output of 75 tonnes per hour using crushed aggregates of specified grading premixed with bituminous binder @ 5.4 to 5.6 per cent of mix and filler transporting the hot mix to work site laying with hydrostatic paver finisher with sensor control to the required grade level and alignment rolling with smooth wheeled vivratory and tandem rollers to achieve the desired compaction as per MoRTH specification clause no. 509 complete in all respects.

YOG RAJ SHARMA

Naranjan Dass