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ANSI ASC A14.1-2007

American National Standards for Ladders - Wood Safety Requirements

This standard prescribes rules and establishes minimum requirements for the construction, testing, care, and use of the common types of portable wood ladders described herein in order to ensure safety under normal conditions of usage. Ladder Types included are:

Duty RatingLadder TypeWorking Load (pounds)
Extra Heavy-DutyIA300
Heavy-DutyI250
Medium-DutyII225
Light-DutyIII200
It does not cover step stools (furniture type), except laddertype step stools (see 6.4.4 for other exceptions). It also does not cover ladder accessories, including, but not limited to, ladder shoes, ladder levelers, ladder stabilizers or standoff devices, ladder jacks, or ladder straps and hooks, that may be installed on or used in conjunction with ladders.
Note: While ladder type stools are covered by A14.1, it is recognized that a step stool standard is under development. When the step stool standard is approved, A14.1 will no longer cover ladder type step stools. The new standard will be A14.11.
These requirements are also intended to prescribe rules and criteria for labeling/marking of the kinds of portable ladders cited in this standard, but exclusive of furniture type step stools and special purpose ladders. These labeling/marking requirements do not apply to those situations where training, supervision, or documented safety procedures would be in conflict, or serve in lieu of, these labeling/marking requirements.

Content Provider
American Ladder Institute [ALI]


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