BD設計標準,
thread >225, (for greater ease >280) refer to BD barrier free access 2008
rise<175, (for greater ease <160) refer to BD barrier free access 2008
Suggest:
>300,<200, 好似大概係咁
最好每段距離有一個平台。
咁而家比較喇,呢種將個thread 整到好長,但rise 又高左小小的設計有咩優劣呢?
定純粹因為斜率問題?
不過,呢到呢條梯似可以設計到 thread /2, rise/2 都okay.
而家爬一級會辛苦D,不過小級D,可以爬爬下坐係到,又冇咁易跣親。
reference to BD barrier free access 2008:
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