Framing & StructuralCâu 458 / 700
Fasteners and metal connectors that contact preservative (pressure) treated deck lumber must have what property to prevent premature failure?
a.Corrosion resistance, such as hot-dipped galvanized or stainless steel
b.The lowest possible cost regardless of coating
c.A bright, uncoated bare-steel finish
d.Aluminum contact directly against the treated wood
Giải thích
Modern treatment chemicals are corrosive to unprotected steel, so fasteners and connectors must be corrosion resistant, typically hot-dipped galvanized or stainless. Choosing by cost alone, using bare steel, or placing aluminum in direct contact all accelerate corrosion and can fail the connection.
Trích dẫn luật: 2025 CA Residential Code §R317.3Luyện miễn phí toàn bộ 700 câu hỏi — không cần đăng ký.
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