Which of the following statements is true about rectangular access openings in manholes?

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Multiple Choice

Which of the following statements is true about rectangular access openings in manholes?

Explanation:
Access openings in manholes are governed by a minimum size to ensure safe entry and movement inside the space. The standard minimum rectangular opening is 20 inches by 16 inches. This gives enough clearance for a person wearing typical PPE and carrying tools or equipment, while also allowing for safe positioning, lighting, and maneuverability when entering or exiting. Opening sizes smaller than this would restrict movement and could create hazardous conditions, whereas larger openings still meet the requirement. Therefore, the statement that matches the required minimum dimensions is the true one.

Access openings in manholes are governed by a minimum size to ensure safe entry and movement inside the space. The standard minimum rectangular opening is 20 inches by 16 inches. This gives enough clearance for a person wearing typical PPE and carrying tools or equipment, while also allowing for safe positioning, lighting, and maneuverability when entering or exiting. Opening sizes smaller than this would restrict movement and could create hazardous conditions, whereas larger openings still meet the requirement. Therefore, the statement that matches the required minimum dimensions is the true one.

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