 鲜花( 3)  鸡蛋( 0)
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shao 发表于 2014-4-4 19:53 
; q) {, x0 m5 Z外墙应该没有几十尺吧 + J0 B" C- p! K, c9 e
yes. say you have unit 33x30 FT for (990SqFt).
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4 S# ] M9 q$ |, |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.: S2 [! t! c( [5 F
interior wall area (Party wall and corridor wall)
8 l; K$ L( d: j$ _# ?% D0.33FT (4" wall) x 63FT = 21SqFt or 0.5 FT x 63 FT=31.5 SqFt.
X1 I3 G& ^, v: s# }* Oadd both together, 50SqFt to over 70SqFt
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for single house, say 1800SqFt (main floor 24x26=624SqFt + second floor 24x50=1200SqFt)
5 [$ {, M+ s5 i% F3 J% A- ryour exterior wall area will be 0.5x(24+26)x2=50 SqFt for main floor. 0.5x(24+50)x2=74SqFt for second. % c. T6 U, J/ P: q6 g6 C
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