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NOTICE: This is an OSHA Archive Document, and may no longer represent OSHA Policy. It is presented here as historical content, for research and review purposes only.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

June 26, 1975

Mr. Donald F. Marr
Daniel Marr & Son Co.
One D Street South
Boston, MA 02127

Dear Mr. Marr:

Your interpretation of the installation of a peripheral safety railing for decked floors is correct. Section 1926.750(b)(1)(iii) requires the "½-inch wire rope or equal" around planked or decked floors, and we agree that it would be hazardous to install the peripheral safety railing until the decking adjacent to the unprotected outside edge of the floor is in place.


Gerald M. DuWors
Associate Assistant Regional Director
[Directorate of Science, Technology, and Medicine]

[Correction 6/20/2005. See OSHA Directive CPL 02-01-034 "
Inspection policy and procedures for OSHA's steel erection standards for construction" published on 3/22/2002 for the current policy.]