Archive Notice - OSHA Archive

NOTICE: This is an OSHA Archive Document, and may no longer represent OSHA Policy. It is presented here as historical content, for research and review purposes only.

OSHA requirements are set by statute, standards and regulations. Our interpretation letters explain these requirements and how they apply to particular circumstances, but they cannot create additional employer obligations. This letter constitutes OSHA's interpretation of the requirements discussed. Note that our enforcement guidance may be affected by changes to OSHA rules. Also, from time to time we update our guidance in response to new information. To keep apprised of such developments, you can consult OSHA's website at

November 27, 1981

Mr. Richard V. Field, P.E.
A.O. Smith Harvecorn Products, Inc.
550 West Algonquin Road
P.O. Box 395
Arlington Heights, Illinois 60006

Dear Mr. Field:

Your letter of October 29, 1981 to Mr. Harold White, Safety Supervisor, OSHA, North Aurora Area Office, was submitted to the Regional Office for comment. Attached is a complete copy of the subject standard. Specifically, 1910.27(b)(1)(ii) says that the distance between rungs shall not exceed 12 inches, and be uniform throughout the ladder length and 1910.27(b)(1)(iii) the minimum clear length or rungs shall be 16 inches.

This standard has not been reviewed. It is in the process of being reviewed by our National Office. This review has not been completed. Therefore, the existing standard remains in effect.

We hope this information is of assistance to you. Should you require any additional information please do not hesitate to call us.



Michael G. Connors,
ARA Technical Support