Water Supply & Distribution第 36 / 120 题
A supply outlet has an effective opening of 3/8 in. What minimum air gap must be provided above the flood level rim of the receiving vessel?
a.3/4 in
b.1 in
c.1-1/4 in
d.2 in
解析
Twice the effective opening is 2 x 0.375 = 0.75 in, but the code sets an absolute minimum air gap of 1 in, so 1 in governs. The 3/4 in answer applies the 2x rule without checking the minimum. The 1-1/4 in and 2 in values are larger than anything the rule produces for a 3/8 in opening.
法律依据: IPC §608.15.1免费刷完整 120 道题库 — 无需注册。
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