Repair of internal bitumen road at CI and JW SSB Gwaldam

CIVIL WORK

Suppling and stacking at site. 53 mm to 22.4 mm size stone aggregate

Suppling, stacking and spreading 6 mm thick red bajri, watering and rolling complete including preparation of the surface and rolling. With road roller/hand roller

Proiding and applying tack coat using hot straight run bitumen of grade VG-10, including heating the bitumen, spraying the bitumen with mechanically operated spray unit fitted on bitumen boiler, cleaning and preparing the existing road surface as per specifications: On Bitumen surface @0.50 Kg/Sqm

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 equiped 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-i-charge. 40/50 compacted thickness with bitumen of grade VG-30 @5.5% (percentage by weight of total mix) and lime filler @ 3% (percentage by weight of aggregate) prepared in batch type hot mix plant of 100-120 TPH capacity.

Providing and laying seal coat of premixed fine aggregate (passing 2.36 and retained on 180 micron sieve) with bitumen using 128 Kg of bitumen grade VG-10 bitumen per cum of fine aggregate and 0.60 cum of fine aggregate per 100 sqm of road surface, including rolling and finishing with road roller all complete.

Surface dressing on new surface with paving of bitumen of grade VG-10 of approved quality using 2.25 kg of bitumen per sqm with 1.65 cum of stone chippings 13.2 mm nominal size per 100 sqm of road surface, including consolidation with road roller of 6 to 8 tonne capacity etc. complete.

Deduct Modified Estimated cost after using correction factor on DSR 2023 on account of GST @ 0.973

Add Cost Index @ 49 % on 31,85,101.04