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這個樓梯間進深不够.開間2.3米是個人住宅還可以.公用樓梯一般不少於2.4米.樓梯踏步高一般不高於18公分,樓高3米樓梯踏步每步高為15公分最理想.踏步寬一般25-30公分.樓梯平臺寬一般不小於開間的二分之一.如果按照15公分一步計算:9*0.25+1.15米*2(2個平臺最小寬度)=4.55米.希望得到幫助.
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