What is the maximum distance for passageways through attics or crawlspaces if they are less than 6 feet high?

The maximum distance for passageways through attics or crawlspaces that are less than 6 feet high is often specified at 20 feet to ensure adequate access and safety for maintenance and inspections. This requirement helps in facilitating movement without excessive bending or crouching, which can be important for both safety and functionality.

When passageways are restricted by low height, a limit is necessary to promote safe travel within these spaces; a distance of 20 feet allows for reasonable maneuverability while still maintaining the low height requirement. The provision focuses on ensuring that individuals can navigate through attics or crawlspaces efficiently and without the risk of injury associated with prolonged bending or twisting in confined spaces.

The other distances mentioned, either shorter or longer than 20 feet, do not comply with the established safety guidelines, as they could either limit accessibility or present increased hazards in low-profile areas. Therefore, allowing for a maximum distance of 20 feet strikes a necessary balance between safety and practicality in such environments.