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.

December 15, 2003

 

 

MEMORANDUM FOR: JOHN B. MILES
REGIONAL ADMINISTRATOR, Region VI
 
ATTN: JEFF LEWIS
 
FROM: RUSSELL B. SWANSON, DIRECTOR
DIRECTORATE OF CONSTRUCTION
 
SUBJECT: §1926.757(a)(1)


This is in response to Mr. Jeff Lewis' e-mail dated August 15, 2003, requesting an interpretation for §1926.757(a)(1).

We have paraphrased the questions as follows:

Question (1): Scenario: Some columns in a building are in a column line that runs parallel to the joists (see columns B and C in the diagram below). Does §1926.757(a)(1) pertain to such columns?


Image of column and joist placement

Answer:
Section 1927.757(a)(1) states:

 

 

[W]here steel joists are used and columns are not framed in at least two directions with solid web structural steel members, a steel joist shall be field-bolted at the column to provide lateral stability to the column during erection.

The purpose of this provision is to prevent joists from collapsing due to insufficient stability of the columns that are supporting them. A field-bolted joist is required in order to provide that stability at a column that is not framed in at least two directions with solid web structural steel members (see, for example, column A). This provision does not apply with respect to a column in a line that is parallel to the joists and that does not help bear the joists (such as columns B and C).

Question (2): Does "framed in at least two directions" mean framed in a perpendicular direction?

Answer:
Yes. Column support in this context means that the column is supported in two axes so that the column cannot fall (column D in the diagram above is framed in two directions with solid web members).