Bureau of Standards Tests Imperviousness of "Mill" Construction to Fire
Further light on the ability of heavy timber or "mill” construction floors to withstand fire is disclosed as a result of tests conducted by the National Bureau of Standards.
The tests indicate, the Bureau states, that the limit of fire resistance of such floors, with the lower face exposed to fire, is determined either by failure under the normally carried working loads or by occurrence of flame or ignition of combustible materials on the upper side.
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