Every open sided floor or platform ___ feet or more above a lower level shall be guarded by a guardrail, safety net, or personal fall arrest system.

The requirement that every open-sided floor or platform that is 6 feet or more above a lower level be guarded by a guardrail, safety net, or personal fall arrest system is established to ensure the safety of workers and to prevent falls, which can lead to serious injuries or fatalities.

In many construction scenarios, the threshold for needing such safety measures is set at six feet, particularly on residential construction sites. This is because falls from this height pose a significant risk, and implementing fall protection systems is essential to maintain workplace safety standards.

The choice that states eight feet reflects a common guideline used for general industry standards; however, in construction, a six-foot standard is what primarily governs. Understanding this distinction is crucial for compliance with OSHA regulations, as it helps ensure that safety measures are in place where they are most necessary.