In LWP Roof Cuts, which option describes an off-cut method?

• A. L7 off beam with construction
• B. L7 off purlin against construction
• C. Opposing saws off Purlin with construction
• D. LWP Roof Cuts are not used

Answer: (C)

The main idea here is understanding what the off-cut method does in LWP Roof Cuts. It involves removing a small piece of the purlin by making two cuts from opposite sides so the middle segment—the off-cut—is taken out while the surrounding construction stays in place. Keeping the rest of the purlin and the roof structure intact provides a controlled opening for ventilation without compromising the overall stability of the roof. This approach gives a quicker, safer way to create the vent while preserving load paths and deck support.

So why this is the best description: it specifically calls out cutting the purlin with opposing cuts to remove the off-cut, which matches how the technique is designed to work, enabling a clean, confined opening with the structure still supported. The other options either refer to different members (like a beam), imply cutting from a single side, or suggest the technique isn’t used at all, which doesn’t describe the off-cut method itself.