GB 50015-2019 第5.2.4条
| Maximum discharge capacity of roof drain: 87-type roof drain (DN100) is 16 L/s, siphon-type roof drain (DN100) is 25 L/s.
| Maximum discharge capacity of roof drain: 87-type roof drain (DN100) is 16 L/s, siphon-type roof drain (DN100) is 25 L/s.
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