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shao 发表于 2014-4-4 19:53 K y$ f% r1 x( \+ I
外墙应该没有几十尺吧 ' y8 G$ E8 w) e$ i( w
yes. say you have unit 33x30 FT for (990SqFt).
6 m, Z7 | K% O6 b# P4 f% aoutside wall areas+ @1 M2 E( I: t! I2 M/ X" |: V
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.1 S1 H# K1 ?' B3 q- r8 E4 X1 {
interior wall area (Party wall and corridor wall) + u( g2 O. X! u0 ]5 G
0.33FT (4" wall) x 63FT = 21SqFt or 0.5 FT x 63 FT=31.5 SqFt.
% \+ {/ ~1 l% Z0 I/ I, @9 ~ s8 Zadd both together, 50SqFt to over 70SqFt, R/ [0 z3 N" N1 S" [
, ~. x! V5 h9 F+ D/ jfor single house, say 1800SqFt (main floor 24x26=624SqFt + second floor 24x50=1200SqFt)% Y2 M; _8 Z$ s6 |
your exterior wall area will be 0.5x(24+26)x2=50 SqFt for main floor. 0.5x(24+50)x2=74SqFt for second. 2 v7 l- t( R; ]0 H6 C3 J& {
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