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shao 发表于 2014-4-4 19:53 * E4 X" H! H4 f5 u4 P4 {3 R
外墙应该没有几十尺吧
+ N# x }2 w9 h3 \' ?! wyes. say you have unit 33x30 FT for (990SqFt). 7 ^; o- x* U. A
outside wall areas" Q$ I" I. b6 v; A- {
33+30 FT outside wall could be anywhere 0.5FT (6" exterior wall width)x63 FT=31.5SqFt or 0.67 FT (sometimes lower floor has 8" exterior wall) x 63FT= 42.21SqFt.# H8 Z# E# J( ^
interior wall area (Party wall and corridor wall) H5 D3 Z, O# p3 \2 q7 {# G& [
0.33FT (4" wall) x 63FT = 21SqFt or 0.5 FT x 63 FT=31.5 SqFt.2 o( j+ R# o }; G- O* `7 E& ^+ i$ ?# z
add both together, 50SqFt to over 70SqFt0 F- ~( x2 }% @* S0 t
' O" i' [6 k; [& o9 e' lfor single house, say 1800SqFt (main floor 24x26=624SqFt + second floor 24x50=1200SqFt)
; R' U: u9 @9 v( M# ~& Zyour exterior wall area will be 0.5x(24+26)x2=50 SqFt for main floor. 0.5x(24+50)x2=74SqFt for second. , I. u: P# e4 J, P, H
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