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Scaffold platform widths and a proposed minimum

Summary An internal OSHA memo identified scaffold types whose then-current rules lacked a general minimum platform width, while two-point suspension scaffolds had a 20-inch rule. The author recommended a future 18-inch general minimum; the memo itself did not enact that proposal. OSHA archives it.
Document
Federal opinion letter
Agency
Occupational Safety and Health Administration (OSHA)
Document number
1974-07-01
Date issued
July 1, 1974
Status
Archived by the agency
OSHA labels this an archive document and warns that it may no longer represent OSHA policy.
Status last verified October 10, 2026
Topics
Workplace Safety OSHA 1910 OSHA 1926 Scaffolds Rulemaking
Source
View the official document

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NOTICE: This is an OSHA Archive Document, and may no longer represent OSHA Policy. It is presented here as historical content, for research and review purposes only.

July 1, 1974

MEMORANDUM TO: AL REIS

SUBJECT: Width of Scaffold Platforms

The Atlanta Region has called to our attention that scaffold platform widths are not specified for most of the scaffolds named in Parts 1910 and 1926. There is no minimum width specified in the General requirements for All Scaffolds in Parts 1910.28(a) and 1926.451(a). Specifically, platforms widths are not given for the following:

Type of Scaffold
Parts
1910 1926
Wood pole .28(b) .451(b)

    Tube and Coupler                        .28(c)      .451(c)

    Tubular Welded Frame                    .28(d)      .451(d)

    Outrigger                               .28(e)      .451(g)

Masons' Adjustable Multiple-
Point Suspension .28(f) .451(h)

Stone Setters' Adjustable Multiple- .28(h) .451(j) Point Suspension

The standards do specify a minimum platform width of not less than 20" for two-point suspension scaffolds in Parts 1910.28(g) and 1926.451(i).

It is recommended that we promulgate a new standard in Parts 1910.28(a) and 1926.451(a) which will establish a minimum width of 18" for all scaffold platforms.

Barry J. White Associate Assistant Secretary for Regional Programs

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