Which of the following temporary guardrail top rail heights is unacceptable?
A. 37"
B. 40"
C. 39"
D. 45"
Answer (2)
The unacceptable temporary guardrail top rail height is 37 inches, as it falls below the minimum height requirement of 39 inches according to OSHA standards. The acceptable range for guardrail heights is 39 to 45 inches. Thus, option A, which is 37 inches, is the correct choice.
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Determine the acceptable height range for temporary guardrail top rails according to OSHA standards, which is 39 to 45 inches.
Compare the given heights (37", 40", 39", and 45") to the acceptable range.
Identify that 37" falls outside the acceptable range.
Conclude that the unacceptable height is \boxed{37"}.
Explanation
Understanding the Problem The question asks us to identify the unacceptable temporary guardrail top rail height from the given options. To answer this, we need to know the standard acceptable height range for such guardrails.
Identifying the Acceptable Height Range According to OSHA (Occupational Safety and Health Administration) standards, the top rail of a guardrail must be between 42 inches (107 cm) plus or minus 3 inches (8 cm). This means the acceptable range is 39 inches to 45 inches.
Comparing Options to the Acceptable Range Now, let's compare the given options to the acceptable range:
A) 37 inches: This is below the acceptable minimum of 39 inches. B) 40 inches: This falls within the acceptable range of 39-45 inches. C) 39 inches: This falls within the acceptable range of 39-45 inches. D) 45 inches: This falls within the acceptable range of 39-45 inches.
Determining the Unacceptable Height Therefore, the unacceptable height is 37 inches.
Final Answer The unacceptable temporary guardrail top rail height is \boxed{37"}.
Examples
Imagine you're setting up safety barriers at a construction site. Knowing the correct guardrail height is crucial to prevent falls. If the guardrail is too low (less than 39 inches), it won't effectively stop someone from falling over. Similarly, if it's too high (more than 45 inches), it might be difficult to reach or could create other hazards. Adhering to the OSHA standards ensures a safe working environment and prevents accidents.
