Framing & StructuralCâu 382 / 700
A required stair handrail must be mounted so its top is within what vertical range above the tread nosings?
a.34 to 38 inches
b.30 to 34 inches
c.36 to 42 inches
d.42 to 48 inches
Giải thích
Handrail top height must be between 34 and 38 inches measured vertically from the nosing line. 30 to 34 inches is too low; 36 to 42 and 42 to 48 inches are too high and overlap guard heights rather than handrail heights.
Trích dẫn luật: 2025 CA Residential Code §R311.7.8Luyện miễn phí toàn bộ 700 câu hỏi — không cần đăng ký.
Câu hỏi liên quan cùng chủ đề
- Under the residential code, what is the MAXIMUM permitted riser height for a stairway serving a dwelling?
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