Final answer:
Guards shall be provided where appliances, equipment, fans, roof hatch openings or other components that require service are located within a certain distance from a roof edge to ensure worker safety.
Step-by-step explanation:
Guards shall be provided where appliances, equipment, fans, roof hatch openings or other components that require service are located within a certain distance from a roof edge. This requirement is important for ensuring the safety of workers who may need to access these components.
The exact distance at which guards are required depends on the specific regulations and standards in place. However, as an example, the Occupational Safety and Health Administration (OSHA) in the United States recommends that guards be provided when components are located within 15 feet of a roof edge.
These guards can be physical barriers or other protective measures that prevent workers from accidentally falling off the roof edge while performing maintenance or repairs.