Framing & StructuralCâu 308 / 700
As a header spans a wider opening and carries more load, how does the required number of jack (trimmer) studs at each end typically change?
a.It decreases because the header gets stiffer
b.It increases so the added bearing area can carry the greater end reaction
c.It stays at one regardless of span
d.Jack studs are removed and replaced by the king stud only
Giải thích
Wider spans and heavier loads raise the reaction delivered to each header end, so codes and manufacturer tables call for additional jack studs to provide enough bearing area beneath the header. The number does not decrease with span, is not fixed at one, and a king stud cannot substitute for bearing jacks.
Trích dẫn luật: 2025 CA Residential Code §R602.7Luyện miễn phí toàn bộ 700 câu hỏi — không cần đăng ký.
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