procurement , laying and commissioning of 24 / 48 core armoured ofc with accessories :- ( a ) 24 core armoured single mode 1310 / 1550nm ( double window ) unitube sm-hdpe sheath outdoor ofc . qty-17 km . ( b ) 48 core armoured single mode 1310 / 1550nm ( double window ) unitube sm-hdpe sheath outdoor ofc . qty-7 . 5 km . ( c ) hdpe pipe 40mm outer diameter ( with thickness 3 . 5mm approx ) . qty- 24 . 5km ( d ) manhole ( size 1 . 5 x 1 . 5 x 1 . 7 mtrs ) . qty - 08 ea . ( e ) fibre splicing enclosures . qty - 30 ea . ( f ) concrete route indicator , painting and sign writing as per bsnl norms , iron route markers of size 2 . 5ft rod with plate installed at distance of 100 mtrs . qty - 30 ea ( g ) digging of soft soil & laying of hdpe pipe and ofc at 1 . 65 mtrs depth . qty - 3 . 5 km . ( h ) digging of hard soil , concrete / road cutting and repairing with rcc and laying of ofc through dwc / gi / rcc pipes for additional protection . qty - 40 mtr . ( j ) splicing of fibre pigtail with associated accessories ( connectors , consumables etc ) . qty - 30 ea