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shao 发表于 2014-4-4 19:53 ) `0 m. w* ~% s
外墙应该没有几十尺吧
, ]& q; K3 Y$ G& x1 X7 ~, v, ~) dyes. say you have unit 33x30 FT for (990SqFt). 8 R5 R: c' t, V2 @7 q
outside wall areas$ Z2 s" p! s, v. B9 [
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.
% `7 m: Y* I0 A4 X( ^+ _. ~interior wall area (Party wall and corridor wall)
9 j9 E1 Q! j% m4 x0 T' B& f0.33FT (4" wall) x 63FT = 21SqFt or 0.5 FT x 63 FT=31.5 SqFt.3 `2 D' S0 d# J! a8 t
add both together, 50SqFt to over 70SqFt
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for single house, say 1800SqFt (main floor 24x26=624SqFt + second floor 24x50=1200SqFt)
7 \: }5 m6 w! }: P0 _' Fyour exterior wall area will be 0.5x(24+26)x2=50 SqFt for main floor. 0.5x(24+50)x2=74SqFt for second.
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