In outdoor advertising display
signs, the allowable working stresses shall conform to the
requirements of
Chapter 16. The working stresses of wire
rope and its fastenings shall not exceed 25 percent of the ultimate
strength of the rope or fasteners.
Exceptions:
- The allowable working stresses for steel and wood
shall be in accordance with the provisions of Chapters
22 and 23.
- The working strength of chains, cables, guys or steel
rods shall not exceed one-fifth of the ultimate
strength of such chains, cables, guys or steel.