What is the estimated fall rate for a person without a fall arrest system?

The estimated fall rate for a person without a fall arrest system is typically around 4 feet in 1/2 second. This estimation is based on the physics of free fall, where an object accelerates under the influence of gravity. In free fall, an object increases its velocity at a rate of approximately 32 feet per second squared (the acceleration due to gravity). Therefore, within the first half-second of falling, a person would generally drop about 4 feet.

This understanding is crucial for safety planning and fall prevention strategies in environments where individuals may work at heights. Knowing the potential fall distances can help assess risks and implement necessary safety measures, such as installing guardrails or utilizing personal fall arrest systems.