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A Douglas fir 4x8 beam (select structural) is simply-supported (unbraced) and has a span of 10...

A Douglas fir 4x8 beam (select structural) is simply-supported (unbraced) and has a span of 10 FT. it is subject to a dead load of 200 PLF and a live load of 100 PLF. The beam is in an outdoor environment which is not expected to be extremely hot for sustained periods.

(a)Determine which timber design parameters/factors (Fb, Fv, Fc, Cm, Ct, etc.) are relevant to bending and explain in words (or show calculations for) your choice of value for each parameter. Your answer for each parameter should be a sentence or two and will often include a table reference.

(b)Check whether this beam is adequate for bending.

(c)Determine the total long-term deflections of the midpoint of the beam.

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