>>33
どうぞ。
https://www.google.com/url?sa=t&;source=web&rct=j&url=https://www.fdma.go.jp/singi_kento/kento/items/post-47/03/sankou3-5.pdf&;ved=2ahUKEwjVhqzKiLDyAhU7kmoFHdW0BDIQFnoECAYQAQ&sqi=2&usg=AOvVaw1Tdi7TyE6NkUSGvylDYVYT