About how much air does the average person require per hour when at rest within a barricaded area?

The correct answer indicates that the average person requires about one cubic yard of air per hour when at rest in a barricaded area. This value reflects a general understanding of ventilation needs in confined spaces, where a sufficient quantity of air is critical for sustaining life and preventing suffocation.

In a situation where individuals are located in a closed environment, and especially in places with limited ventilation, having access to approximately one cubic yard of air per hour ensures that there is enough oxygen for metabolic functions. One cubic yard is approximately 27 cubic feet, making it a much more realistic figure than the options suggesting drastically lower volumes of air, which would not be adequate for human survival over time.

This requirement emphasizes the necessity of considering proper ventilation practices in enclosed work environments, especially for safety and health compliance in construction and other industrial settings. It is vital for foremen and safety personnel to understand these air intake needs to ensure adequate air supply in enclosed or potentially hazardous work areas.