3.5ft比较稳妥.高DECK和低DECK对深度的要求是一样的,因为你的LOADING是一样的,冻土的上拔力frost heave也一样. 另外不建议自己挖坑,自己挖的坑直径太大,灌了水泥之后多余部分要回填回去,而这部分的密实度不够,桩容易倾斜.最好上home depot租个机器,半天就搞定了.2 p6 {0 S6 F& K; V1 n
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超过3级台阶的DECK都要有扶手,2ft以上高的deck都需要申请permit.8 W$ T$ h7 Q; k( n% X
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Construction of a uncovered deck requires a development permit and building permit if they are: ! E y; k ]9 w% i5 vMore than 0.6 m (2 ft) above grade 7 t! w$ b3 }+ p' b: q
Located in the rear or side yard ' B; M: e- z. T6 {6 o8 ?7 Z P- O详细情况请见2 U. h3 _# S. {" u http://www.edmonton.ca/portal/se ... provements/Deck.htm