2 3 points You are designing a Douglas FirLarch 4x4 post as

2. (3 points) You are designing a Douglas Fir-Larch 4x4 post as part of a bracing system. You have determined that the design factored load is 8,700 lb. Assuming that the member is fully braced, and that the resistance factor for compression 0.85, what grade of lumber is needed to support this load?

Solution

for given condition of bracing system use grade 2 lumber is needed to support the load.