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shao 发表于 2014-4-4 19:53 / h* `/ l9 M$ v( C
外墙应该没有几十尺吧
; N, a5 p( U8 n* dyes. say you have unit 33x30 FT for (990SqFt).
/ K5 R, e. ?# ` }0 H6 m. Xoutside wall areas8 _& V: }6 l" r( Y S
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.
# S$ o. c4 c2 F- Vinterior wall area (Party wall and corridor wall)
8 D. l; s+ {" i+ B* m8 q: p$ C0.33FT (4" wall) x 63FT = 21SqFt or 0.5 FT x 63 FT=31.5 SqFt.
. u% S/ D, O+ g2 d4 q% cadd both together, 50SqFt to over 70SqFt; I' d& q; l: g. o% e
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for single house, say 1800SqFt (main floor 24x26=624SqFt + second floor 24x50=1200SqFt)
2 B5 n6 k5 Z, p/ D$ Byour 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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