tender for [[17.26.2]tack coat 2. providing and applying tack coat with penetration grade bitumen vg - 10 using bitumen pressure distributor at the rate of 0.30 kg per sqm on the prepared bituminous/ granular surface cleaned with mechanical broom as per technical clause 503 of mort&h specifications , [17.29]built-up-spray grout providing, laying and rolling of built-up-spray grout layer over prepared base consisting of a two layer composite construction of compacted crushed coarse aggregates using motor grader for aggregates. key stone chips spreader may be used with application of bituminous binder after each layer, and with key aggregates placed on top of the second layer to serve as a base conforming to the line, grades and cross-section specified, the compacted layer thickness being 75 mm , [17.50]patch work with close graded premix surfacing/mixed seal surfacing 20 mm thickness (type b) providing and laying patch work with close graded premixed surfacing material of 20 mm thickness type b using penetration grade bitumen vg - 10 @ 1.9 kg per sqm and crushed aggregates of specified grading after trimming the pot holes, removal of failed material, including mixing in a continuous type of hmp, carriage of mixed material and rolling with a smooth wheeled roller to match the adjoining surface complete as per technical clause 508 of mort&h specifications , [17.51]patch work seal coat type b providing and laying of premix sand seal coat premixed in continuous type hmp of appropriate capacity not less than 75 tonnes/ hours using specified fine aggregates and penetration grade bitumen @0.68 kg/sqm laid to specified levels, grade and cross fall complete as per technical clause 511 of mort&h specifications.