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shao 发表于 2014-4-4 19:53 7 s. S( l& A9 u) }
外墙应该没有几十尺吧 . B: A# h+ l: i4 G; B
yes. say you have unit 33x30 FT for (990SqFt).
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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.
2 N' u/ |1 B1 P6 X, `& Cinterior wall area (Party wall and corridor wall)
% e1 z2 I7 g. ], L0.33FT (4" wall) x 63FT = 21SqFt or 0.5 FT x 63 FT=31.5 SqFt., V4 K: f+ ?/ o& T: G
add both together, 50SqFt to over 70SqFt
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for single house, say 1800SqFt (main floor 24x26=624SqFt + second floor 24x50=1200SqFt)! a9 {6 R4 M, M+ ?
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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