 鲜花( 3)  鸡蛋( 0)
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shao 发表于 2014-4-4 19:53 . g# u5 f1 {, v) L
外墙应该没有几十尺吧 ; ]0 g& u1 _2 T& M! }- w% }/ e; y
yes. say you have unit 33x30 FT for (990SqFt). 4 N; I* O7 X9 L& `
outside wall areas7 u! f$ e8 k: m
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.* W& F F; B# j# d! K
interior wall area (Party wall and corridor wall)
5 `1 [1 |5 `5 J* h F( h. r0.33FT (4" wall) x 63FT = 21SqFt or 0.5 FT x 63 FT=31.5 SqFt., j; m! e4 g1 m7 ?* a" l4 B* F- ]
add both together, 50SqFt to over 70SqFt
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for single house, say 1800SqFt (main floor 24x26=624SqFt + second floor 24x50=1200SqFt), s* }7 ~5 c z
your 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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