GB 50015-2019 第5.2.13条
| Maximum discharge capacity of roof rainwater outlets: 87-type rainwater outlet (DN100) is 12 L/s, DN150 is 26 L/s; siphon-type rainwater outlet (DN75) is 6 L/s, DN100 is 12 L/s.
| Maximum discharge capacity of roof rainwater outlets: 87-type rainwater outlet (DN100) is 12 L/s, DN150 is 26 L/s; siphon-type rainwater outlet (DN75) is 6 L/s, DN100 is 12 L/s.
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