Outdoor locations surrounded by impermeable walls, except fire barrier walls, shall have protected ventilation openings at what part of each wall?

The correct answer is that protected ventilation openings must be located at the base of each wall in outdoor locations surrounded by impermeable walls, except fire barrier walls. This requirement is vital for ensuring that gases or any potential buildup of hazardous materials can effectively dissipate from the space.

Positioning the ventilation openings at the base allows for the dissipation of heavier gas concentrations that may settle lower to the ground, thus preventing the accumulation of potentially harmful gases. This placement is essential in maintaining proper airflow and safety in such constructed environments.

Establishing openings at the base also facilitates intake of fresh air as well as the escape of gases, promoting a balanced ventilation system crucial for safety in medical gas applications. Proper design considers that gases will typically rise; therefore, opening at the base is strategically important for effective ventilation.