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shao 发表于 2014-4-4 19:53 1 H4 d. o( T: v0 ~* H8 a# E! p
外墙应该没有几十尺吧
% Q( X/ j4 @( oyes. say you have unit 33x30 FT for (990SqFt). % W5 A+ C0 K7 o7 v. L' V4 T
outside wall areas2 j6 z* ^5 e8 J2 @5 F1 j9 ~, o
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.5 e ]- W1 c. T3 w( J2 Q$ A0 i
interior wall area (Party wall and corridor wall) ' r. e" a$ w6 J, H
0.33FT (4" wall) x 63FT = 21SqFt or 0.5 FT x 63 FT=31.5 SqFt./ |* [1 g7 K7 j+ ]4 Y7 A) N8 L
add both together, 50SqFt to over 70SqFt, G5 {# t9 ]5 I* {3 C
+ W8 a; a. l" ~* \* D8 G* Z, |for single house, say 1800SqFt (main floor 24x26=624SqFt + second floor 24x50=1200SqFt)
; W( T7 U* J" e& nyour 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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