What height should a vent be above ground level to ensure proper ventilation?

To ensure proper ventilation, a vent should typically be positioned at a height that allows for effective dispersal of any gases or contaminants that could accumulate near the ground level, particularly in wastewater treatment facilities or collection systems. A height of 24 inches is commonly recommended as it strikes a balance between being above possible obstructions and providing sufficient clearance to avoid interference from surface-level disturbances, such as floodwaters or debris.

At this height, the vent can effectively vent gases to prevent build-up that could lead to safety hazards or operational issues. A height of 12 inches may be too low, risking exposure to ground-level vapors, while heights of 18 inches and above 30 inches might be excessive for some installations, depending on specific environmental conditions and regulatory requirements. Therefore, 24 inches is often deemed optimal for achieving the right level of ventilation while maintaining safety standards.