Word: two-inch
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Dates: during 1882-1882
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...slightly carved in the lecture rooms. As a precaution against fire the floors will be constructed like those in modern mills, with the exception of the upper flooring of seven-eighths inch maple. These floors will be constructed as follows: Immediately on top of beams is a layer of two-inch spruce, while above this is a flooring of seven-eighths inch maple. Another layer of hard wood is placed below the spruce and between the beams, furnishing a ceiling for the rooms below...