What is the MAXIMUM distance between a ventilating opening in an under-floor space and each corner of the building?

The maximum distance between a ventilating opening in an under-floor space and each corner of the building is set at 3 feet to ensure adequate ventilation. This requirement is crucial for maintaining airflow and preventing moisture buildup, which can lead to mold and structural issues. By restricting the distance to 3 feet, building codes aim to facilitate effective ventilation across the entire under-floor area, ensuring that even the corners of the building receive proper air circulation. This distance helps to balance airflow, providing fresh air in the under-floor spaces while removing stale air, thereby promoting a healthier environment within the building.

Adhering to this standard not only addresses ventilation but also aligns with safety regulations intended to protect the building's structural integrity.