Core TradesCâu 103 / 700
At the intersection of two sloping roof planes, water collects and flows in a channel. The flashing installed in this channel is called:
a.Step flashing
b.Counter flashing
c.Valley flashing
d.Drip edge
Giải thích
The channel where two roof planes meet is the valley, and valley flashing carries the concentrated runoff. Step flashing is used where a roof meets a vertical wall, counter flashing overlaps base flashing at walls/chimneys, and drip edge goes at eaves and rakes.
Trích dẫn luật: 2025 CA Building Code, Chapter 15 (Roof Assemblies)Luyện miễn phí toàn bộ 700 câu hỏi — không cần đăng ký.
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