Building and civil
Building coverage ratio, floor-area ratio, and the front road
Floor-area ratio in Japan: a narrow street caps it below the zoned figure, so the road sizes the building
This drawing comes from one YAML file. No shape was moved by hand.
Notes in the source (in Japanese)
指定が 200% でも、前面道路が 4m なら 160% しか使えない。
建蔽率は「広さ」(建築面積 ÷ 敷地面積)、容積率は「量」(延べ面積 ÷ 敷地面積)。そして前面道路の幅員が 12m 未満なら、幅員 × 0.4(住居系)と指定の小さいほうが上限(法 52 条 2 項)。道路の幅が、建物の大きさを決めている。
Source (YAML)
examples/gallery/208-建蔽率と容積率.zumen.yaml
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