4 Va. Admin. Code § 25-40-2000
Steep fixed ladders (70° to 90° from the horizontal), 30 feet more in length, shall be provided with backguards, cages, or equivalent protection, starting at a point not more than seven feet from the bottom of the ladder.
§§ 45.1-161.3, 45.1-161.294 and 45.1-161.305 of the Code of Virginia.
Derived from VR480-05-1.2 § 11.20, eff. July 19, 1989.