 鲜花( 3)  鸡蛋( 0)
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shao 发表于 2014-4-4 19:53 
, @3 @* z) u$ `9 N0 A外墙应该没有几十尺吧 " r7 f O. r& E2 W
yes. say you have unit 33x30 FT for (990SqFt).
8 m+ o% K/ ?1 U- y6 O; w5 Woutside wall areas
# u, p+ `: E4 Q5 r33+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 p7 c2 u9 [! j3 O
interior wall area (Party wall and corridor wall) ' w1 z# ]# j g
0.33FT (4" wall) x 63FT = 21SqFt or 0.5 FT x 63 FT=31.5 SqFt.9 d" u+ Y/ I$ G: \/ A. v# O3 E7 G; D
add both together, 50SqFt to over 70SqFt9 C5 w, a0 h" a; d
* C, |$ X `8 ~4 Wfor single house, say 1800SqFt (main floor 24x26=624SqFt + second floor 24x50=1200SqFt)
; L% ^$ y; l8 eyour 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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