Lập kế hoạch & Dự toánCâu 281 / 360
A plan symbol showing a small circle with a bisecting line and the note "FD" most likely indicates what?
a.A fire damper
b.A floor drain
c.A flow detector
d.A foundation dowel
Giải thích
"FD" on a plumbing plan denotes a floor drain, typically drawn as a small circle at the fixture location. Recognizing fixture abbreviations lets you route waste and vent piping to the correct point. Always verify the abbreviation against the plan's symbol legend, which governs that specific drawing set.
Luyện miễn phí toàn bộ 360 câu hỏi — không cần đăng ký.
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