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shao 发表于 2014-4-4 19:53 ) M7 ~( C' ?4 R8 O/ {( c% j* R
外墙应该没有几十尺吧
/ O$ \8 q* m* Z$ x+ e5 G5 qyes. say you have unit 33x30 FT for (990SqFt). 7 v3 M0 f( Q, ]) k
outside wall areas
( @5 {+ J$ k1 f4 L3 c+ k33+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 f( b" T: T, b2 X! ^3 X4 T0 r
interior wall area (Party wall and corridor wall) # c1 A, L4 b) h$ c
0.33FT (4" wall) x 63FT = 21SqFt or 0.5 FT x 63 FT=31.5 SqFt.
. b4 r2 T0 U" jadd both together, 50SqFt to over 70SqFt) L: C4 L# O6 Y0 M j g
7 l/ ]6 h! S& t' Tfor single house, say 1800SqFt (main floor 24x26=624SqFt + second floor 24x50=1200SqFt)
& x! n0 J0 s7 G, q3 p* P" {3 {your exterior wall area will be 0.5x(24+26)x2=50 SqFt for main floor. 0.5x(24+50)x2=74SqFt for second. # G, Y! _0 e3 U; P6 O9 U/ ]6 x( Y8 r
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