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. 9 k j/ f" y% K* f: e8 M # R% V w0 b( K5 S7 G7 x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. 7 K/ V2 V; ~4 M3 K 9 ?* v2 e% G% B* g! Z* T xConstruction of a uncovered deck requires a development permit and building permit if they are:4 P4 V' m# F/ E) f1 R! m6 B
More than 0.6 m (2 ft) above grade 3 S/ O" H2 z' y2 c& @/ f% o
Located in the rear or side yard : m( U Z. A5 T: L; |& Y" h
详细情况请见( |7 ]# L- ` |2 O* {: u http://www.edmonton.ca/portal/se ... provements/Deck.htm