Question

A 6-3/4 in. x 21 in. 24F-1.7E softwood glulam is used to support equal point loads at the third point of a 33 ft simply supported span. The controlling LRFD load combination is 1.2D + 1.6Lr + L, the moisture content will exceed 16% in service, and the beam is exposed to normal temperatures. Lateral support is provided at the supports and at the third point. Determine the adjusted nominal moment capacity M’n based on the volume factor.

Answer 1