When a rafter or joist is encountered during a cut in ventilation operations, what is the recommended action?

• A. Lift the saw over the member and resume the cut
• B. Maintain the same position and push through the member
• C. Rotate the saw to parallel with the member and continue
• D. Stop the cut and switch to a different line

Answer: (A)

When performing a vertical ventilation cut, the immediate goal is to maintain control and keep the intended line of cut clear of obstacles. If you run into a rafter or joist, lift the saw just enough to clear the member and then resume the cut on the far side. This avoids blade binding and kickback from trying to push through solid wood, helps you stay on your ventilation path, and keeps the operation efficient and safer. Pushing through the member or changing the cut angle introduces risk and delays, while stopping to switch to a different line wastes valuable time in a fireground operation.