Final answer:
Being within 15 feet of an operating backhoe is not advisable due to the risk of physical harm and potential hearing damage similar to that caused by loud rock concerts or pneumatic chippers, which could result from just 30 minutes of exposure.
Step-by-step explanation:
It is generally recommended to maintain a safe distance from heavy machinery, such as a backhoe, while it is operating. This is important not only to avoid physical injury from machinery movement but also to prevent potential hearing damage from prolonged exposure to loud noise. Being within 15 feet of an operating backhoe can be hazardous, depending both on the sound level emitted by the equipment and the duration of the exposure.
The noise from heavy construction equipment, like a backhoe, could be comparable to a loud rock concert or a pneumatic chipper, with the potential to cause hearing damage after 30 minutes of exposure. Hydraulic and mechanical lever systems about heavy machinery, suggest complicated operations wherein both moving parts and noise hazards are present.
Consequently, safety regulations often require workers and bystanders to use hearing protection or maintain a safe distance from such machinery during operation. Following safety guidelines carefully can help protect against both acute and long-term health risks associated with heavy machinery in operation.