Supply of 132 km of underground, armoured, unscreened railway signalling cable size 12 core x 1.5 sq mm and 33 km of pvc insulated multi strand, single core copper conductor as per the details in the tender.

Prep of sub grade 200 mm avg th gsb 250 mm th wmm 200 mm th dbm 60 mm th incl prime coat ac 40 mm thick consolidated with hmp mix incl tack coat compaction as per morth for surf wk km 1.500 to km 20 on khotakpa tshobaley in64 rcc dantak bhutan