Wood beams designed to pull out of a wall during a collapse without affecting the wall are known as ...

Wood beams designed to pull out of a wall during a collapse without affecting the wall are known as ...

• A. Sill beams
• B. Tie beams
• C. Splice beams
• D. Fire cut beams

Answer: (D)

The idea being tested is how timber framing is arranged to minimize wall damage during collapse. A fire cut beam is cut at the end where it seats into a wall so the connection is weakened and the beam can pull away if the structure shifts. This intentional bevel or notch lets the beam withdraw from the wall rather than forcing the wall to fail, reducing the impact on the wall itself. The other terms describe different kinds of beams with different purposes—sill beams sit at the bottom of a wall, tie beams help keep walls from spreading, and splice beams join beam sections—none of which specifically describe the withdrawal behavior during collapse.

The idea being tested is how timber framing is arranged to minimize wall damage during collapse. A fire cut beam is cut at the end where it seats into a wall so the connection is weakened and the beam can pull away if the structure shifts. This intentional bevel or notch lets the beam withdraw from the wall rather than forcing the wall to fail, reducing the impact on the wall itself. The other terms describe different kinds of beams with different purposes—sill beams sit at the bottom of a wall, tie beams help keep walls from spreading, and splice beams join beam sections—none of which specifically describe the withdrawal behavior during collapse.