Framing & StructuralCâu 328 / 700
When a bird's-mouth seat cut is made where a rafter bears on the top plate, what limits how deep that notch may be cut?
a.It may be cut to any depth to fit the plate
b.It must remove exactly half the rafter
c.The remaining rafter depth above the notch must stay adequate; the seat cut should not over-notch the rafter
d.The notch must equal the plate width plus 2 inches
Giải thích
A bird's-mouth seat cut removes material where the rafter sits on the plate, but enough rafter depth must remain above the notch to carry the load, so the cut is limited (commonly the notch does not exceed one-quarter to one-third of the rafter depth per design). Cutting to any depth, exactly half, or plate-width-plus-2 are not the governing limits.
Trích dẫn luật: 2025 CA Residential Code §R802.7Luyện miễn phí toàn bộ 700 câu hỏi — không cần đăng ký.
Câu hỏi liên quan cùng chủ đề
- CALCULATION: A building is 28 feet wide with a central ridge. Ignoring ridge-board thickness, what horizontal run does each common rafter span from the exterior wall to the ridge?
- On the jobsite, cutting, notching, or drilling the chords or webs of a prefabricated wood truss is:
- What is the purpose of permanent lateral bracing on the web members of long-span roof trusses?
- CALCULATION: A hip rafter runs diagonally across the plan corner of a roof. Compared with a common rafter having the same rise, the hip rafter is:
- On a wood I-joist, where may holes generally be cut, and which part must never be cut or notched?
- At the bearing ends of many wood I-joists, what component is often required to prevent web crushing or rotation?
Cập nhật gần nhất: · quy trình kiểm tra
Đội Ngũ Biên Tập PrepPass · Đối chiếu với California CSLB General Building (B) Trade Examination · Quy trình kiểm tra