FTN typical drawing (D&D)
DR FTN (D&D) 004
Spur Cable Arrangement: 2 Tubes Spurred
Issue 2
What the drawing shows
Same spur principle with two tubes taken off the trunk, typically where a site needs working and protection fibres on separate tubes.
Typical drawings are a starting point: the project design, the site survey and the current standards decide what is actually built.