Pressurization systems are designed to prevent smoke infiltration by creating a pressure differential. Which description best describes their purpose?

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Multiple Choice

Pressurization systems are designed to prevent smoke infiltration by creating a pressure differential. Which description best describes their purpose?

Pressurization systems create a higher air pressure inside a protected space than in surrounding areas, forming a barrier against smoke. Because air moves from high pressure to low pressure, the differential pushes air out through openings and makes it harder for smoke from adjacent spaces to infiltrate. This helps keep egress routes, stairwells, and critical areas tenable for occupants and firefighters. Other approaches describe different HVAC concepts, but the purpose here is specifically to establish and maintain that pressure difference to block smoke entry.

Pressurization systems create a higher air pressure inside a protected space than in surrounding areas, forming a barrier against smoke. Because air moves from high pressure to low pressure, the differential pushes air out through openings and makes it harder for smoke from adjacent spaces to infiltrate. This helps keep egress routes, stairwells, and critical areas tenable for occupants and firefighters. Other approaches describe different HVAC concepts, but the purpose here is specifically to establish and maintain that pressure difference to block smoke entry.

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