In residential construction, at what height must workers be harnessed to prevent falls?

In residential construction, the standard height at which workers must be harnessed to prevent falls is 6 feet. This guideline is established by the Occupational Safety and Health Administration (OSHA) regulations, which recognize the increased risk of fall injuries at this height, especially in residential settings.

At 6 feet, the likelihood of sustaining significant injuries from falls is substantial, which is why regulations are in place to ensure that workers use fall protection measures such as harnesses. These measures are critical in protecting workers who might be engaged in activities like roofing, framing, or working on ladders and scaffolds, where the risk of falling is particularly pronounced.

Understanding this height limitation is crucial for anyone involved in construction, as it emphasizes the importance of safety compliance to mitigate the risk of workplace injuries. Other heights mentioned in the options, like 4, 10, or 12 feet, do not reflect the specific standard established for residential construction and may not adequately address the potential hazards present at 6 feet.