Which of the following is a feature affecting heat exposure integrity?

• A. Compartmentation
• B. Street Address
• C. Traffic Volume
• D. Landscaping

Answer: (A)

Heat exposure integrity depends on limiting how heat moves from the involved fire area to adjacent spaces. The way to achieve that is through compartmentation—fire-resistive walls, floors, ceilings, and properly sealing doors and openings that divide a building into protected sections. When these barriers are in place and maintained, radiant and convective heat are contained, reducing heat reaching exposures and giving occupants and firefighters a safer window of time. The other options don’t create those interior heat barriers: street address and traffic volume affect response logistics, while landscaping may influence exterior fire behavior but does not establish the internal barriers that control heat transfer.