Framing & StructuralCâu 398 / 700
For exterior wood decks, which material designation BEST indicates lumber suitable for the wet, ground-contact exposure of deck posts set near grade?
a.Preservative-treated lumber rated for ground contact
b.Kiln-dried interior-grade lumber
c.Untreated standard framing lumber
d.Finger-jointed trim stock
Giải thích
Deck posts near grade require preservative-treated lumber rated for ground contact to resist decay and insects. Kiln-dried interior lumber, untreated framing lumber, and finger-jointed trim are all unsuited to sustained moisture and will deteriorate.
Trích dẫn luật: 2025 CA Residential Code §R507.2Luyện miễn phí toàn bộ 700 câu hỏi — không cần đăng ký.
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