如果是建筑室外疏散台阶,不能少于3阶,每阶 11"(min)宽 x 4"-7" 高.
Anyway,good luck~!
如果是建筑室外疏散台阶,不能少于3阶,每阶 11"(min)宽 x 4"-7" 高.
Anyway,good luck~!
•
人老眼花了,看成巴格牙路了。唉!不服老不行啊。
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02/23/2013 postreply
09:54:29
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