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shao 发表于 2014-4-4 19:53 , @6 ^( V, U1 \6 f0 M; t
外墙应该没有几十尺吧
2 Z/ r& S+ B. h3 g7 gyes. say you have unit 33x30 FT for (990SqFt). * P9 t: b. @* l* j5 y
outside wall areas
8 R/ h0 \, e. ~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.
) n6 c2 N" t) ]interior wall area (Party wall and corridor wall)
4 g8 ]7 Y& ~. U1 Q0.33FT (4" wall) x 63FT = 21SqFt or 0.5 FT x 63 FT=31.5 SqFt.& Y; A$ [* N+ |. ^7 t- `) q
add both together, 50SqFt to over 70SqFt; f+ X) y' }, y; o$ j6 `8 v
9 r, J4 V3 F: U: Zfor single house, say 1800SqFt (main floor 24x26=624SqFt + second floor 24x50=1200SqFt)
3 R6 c( |4 e1 ?: H1 Fyour exterior wall area will be 0.5x(24+26)x2=50 SqFt for main floor. 0.5x(24+50)x2=74SqFt for second. 2 s" q1 S0 L o
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