Silent Floors, Silent Killers?

Over the past two decades, the fire service has had to deal with the increased use of lightweight structural components. Much of our concern over that time has dealt with small dimensional truss floors and roofs. But with the building boom that has been seen throughout much of the country over the past several years, small dimensional lumber concerns must now also include other types of engineered lumber. A major concern on which we must now focus is wooden I-joists (photo 1). (1) The wooden I-joist consists of an upper flange, a center web section, and a lower flange. Click here to enlarge imageWooden I-joists have been called by several terms in the wood product industry and in the fir...

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