Slope length is determined as described below in Japan.

Slope: 1/12 or less

For each 75cm height, it needs a landing of 150cm or more.

- gradient for BC and DE: 1/12 or less
- height for BC and DE: 75cm or less
- distance for CD: 150cm or more

Here, it assumes that the distance for AB and EF must be 150cm or more.

total length when slope is 1/12(cm) | |

total length when slope is 1/15(cm) |

Wow! It needs much space for a slope.

Updated: