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huangyhg

2009-09-16 11:09 AM

structural drawings from 1921

structural drawings from 1921
i'm looking at drawings from 1921 and for the 2nd floor plan it says 3c 32" 67 s.f. it looks like a poured conc floor. any ideas as to what this means? thanks

所有的时间均为北京时间。现在的时间是 02:59 PM.