Which building element extends from the foundation up to and through the roof to limit the spread of fire between adjacent structures?

• A. Bowstring Truss
• B. Fire Wall
• C. Eave
• D. Cast-in-place Concrete

Answer: (B)

A fire wall is a continuous, noncombustible barrier designed to stop the spread of fire between buildings. It extends from the building’s foundation all the way up through and above the roofline, ensuring that heat, flames, and smoke cannot easily cross from one structure to the adjacent one. Fire walls are built to resist fire on both sides and are designed with rated assemblies and protected openings to maintain integrity during a fire.

Other options don’t fit this role: a bowstring truss is a structural roof member, not a barrier between buildings; an eave is simply the roof overhang; and cast-in-place concrete is a material, not the specific element whose purpose is to separate structures and limit fire spread.