Standard Interpretations
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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. Each 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.
- 1926 Subpart P - Clarification of Standards - 01/09/1991
- 1926 Subpart P - Placement of vertical hydraulic shoring members; Bending strength of plywood; use of non-structural sheeting. - 08/30/1991
- 1926 Subpart P - Requirements for MTD to identify registered professional engineers. - 10/27/1992
- 1926 Subpart P - Soil classification. - 01/10/1994