 鲜花( 3)  鸡蛋( 0)
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shao 发表于 2014-4-4 19:53 
! @- [ L8 l9 s9 ~& {6 j0 E外墙应该没有几十尺吧
/ U+ Q* j% o, qyes. say you have unit 33x30 FT for (990SqFt). . b6 \# v$ \2 i) h( l5 K# T3 Q
outside wall areas
, ^+ I& W' ?) P9 y2 y33+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.1 }# K% c% I/ x4 e) a' ^% [( N
interior wall area (Party wall and corridor wall) " h9 ^+ J) U* J7 m
0.33FT (4" wall) x 63FT = 21SqFt or 0.5 FT x 63 FT=31.5 SqFt.
7 C' f( q3 f) V; O Y+ uadd both together, 50SqFt to over 70SqFt: Q% c9 m! l' ~$ g# k. m/ W
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for single house, say 1800SqFt (main floor 24x26=624SqFt + second floor 24x50=1200SqFt)
( l$ {3 t7 z2 [: }5 D# iyour 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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