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 http://www.osha.gov.

February 26, 1982

MEMORANDUM FOR: ALAN C. MCMILLAN
               Regional Administrator

THRU:           JOHN MILES
               Field Coordination

FROM:           PATRICK R. TYSON
               Director
               Federal Compliance and State Programs

SUBJECT:        29 CFR 1910.27(b)(I)(ii) (Rung Spacing)

29 CFR 1910.27(b)(1)(ii) requires the distance between rungs, cleats, and steps shall not exceed 12 inches and shall be uniform throughout the length of the ladder. However, the 13.75 inch uniform spacing is acceptable and should be noted as a de minimis violation.