I would have thought
these specs were very relevant to anyone designing an installation. Resistance and capacitance per foot are highly relevant. If you are designing conduit, then you want to know the turning radius. Also knowing how hard you can pull on the cable is also important.
These specs are relevant, and easy to understand, or should be, for anyone starting system design with a view to installation. I'm sure the number of posts I have fielded over the years relating to screw ups where these and other specs and associated procedures have not been followed is now legion. Do it right, do it once should be the intent.
The design of a state of the art AV room is a complex and arduous undertaking and not to be embarked on, in a frivolous frame of mind.