1) For the structure shown below, find the margin of safety, MOS for member BC of the structure based on the following information: DLL at point A = 150 lbs, Nfs =2.0, ult=8350 psi, cross-sectional area of member BD, AAB=0.25in 4 ft A 1f 1 ft F D 1 ft -2 ft 75 lb/ft B E G -2 ft. 1 ft 1 ft 30 150 lb