Historical
ANSI ASC A14.3-2008
American National Standards for Ladders - Fixed - Safety Requirements
This standard prescribes minimum requirements for the design, construction, and use of fixed ladders, and sets forth requirements for cages, wells, and ladder safety systems used with fixed ladders, in order to minimize personal injuries. All parts and appurtenances necessary for a safe and efficient ladder shall be considered integral parts of the design.
American Ladder Institute [ali]