Unformatted text preview: purposes may not be valid. You should consult with the building official and structural engineer on this issue. A DFL No 1 2x4 column rests on top of a DFLSS 4x8 simple wood beam that spans 12 ft. The column carries a load of 7,000 lb. Sketches are not required. A Calculate the compression stress parallel to grain in the column for the above condition. Is it OK? 3 points f = P/A = 7000 lb/(1.5 in x 3.5 in) = 1333 lb/in 2 < 1700 lb/in 2 … OK B Calculate the compression stress perpendicular to grain in the beam for the above condition. Is it OK? 3 points Note … we use the 2x4 column size because it is the area that is pushing down on the beam … f = P/A = 7000 lb/(1.5 in x 3.5 in) = 1333 lb/in 2 > 625 lb/in 2 … NOT OK...
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This note was uploaded on 03/30/2008 for the course ARC 322 taught by Professor Mcgavin during the Winter '08 term at Cal Poly Pomona.
- Winter '08