Framing & StructuralCâu 371 / 700
For a circular (Type I) handrail, what is the required graspable cross-section?
a.Any size, as long as it is smooth
b.An outside diameter of at least 1-1/4 inch and not more than 2 inches
c.At least 3 inches in diameter
d.Exactly 1 inch in diameter
Giải thích
A circular handrail must have an outside diameter between 1-1/4 inch and 2 inches so a hand can close around it securely. 'Any size,' a 3-inch diameter (too large to grasp), and a fixed 1-inch (below the minimum) do not meet the graspability requirement.
Trích dẫn luật: 2025 CA Residential Code §R311.7.8.5Luyện miễn phí toàn bộ 700 câu hỏi — không cần đăng ký.
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