If you are unsure whether a hoistway is a permit-required confined space, where can you find more information?

The correct choice is based on the fact that OSHA (Occupational Safety and Health Administration) provides specific regulations regarding confined spaces, including those related to hoistways. The OSHA 29 CFR 1926 code outlines safety standards that must be followed in construction environments, which cover the identification and handling of permit-required confined spaces. This code details the criteria for evaluating whether a space poses potential hazards that necessitate special safety measures, thereby providing a reliable reference for determining if a hoistway falls under that category.

In contrast, while NSC Guidelines may offer some general safety tips, they are not legally binding like OSHA regulations. Local building codes can provide useful information, but they may vary widely and not specifically address the confined space criteria that OSHA has standardized. The manufacturer's manual can contain relevant operating procedures or safety warnings, but it may not comprehensively cover the specific regulatory standards required for confined spaces in a broader operational context. Thus, the OSHA code serves as the definitive source for evaluating whether a hoistway is a permit-required confined space.