Wood Testing Lab BRAE 234

Wood Testing Lab BRAE 234 - Dominic Sween BRAE 232 Wood...

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Dominic Sween BRAE 232 04/20/11 Wood Testing Lab Columns Questions: A. Generally speaking, the longer the column is, the less breaking strength it has. The average Load-lb. values were much higher for the columns that were shorter in overall length. B. For a column that is larger in overall length, there will be more lateral translation and the sine wave buckling will be more evident. We observed that many of the shorter columns had horizontal shear failure opposed to the standard buckling that we observed in the longer columns. Beams Questions: A. The data that was compiled from lab showed that moisture content plays an important role in overall beam strength. The Doug Fir specimens were identical except for their moisture content. The Doug Fir piece that had moisture content of 22% was lower breaking strength (2623lb.) than the Doug Fir piece that had 15% (3420lb.). This proves that wood beams are stronger if they have a lower moisture content percentage. Moisture Content plays a role in the breaking mode of the beams. The Red Oak specimen
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