Beam analysis Beam analysis newfemapuser (Marine/Ocean) (OP) 23 Feb 18 06:47 For a beam analysis, what kind of analysis i should make? Is correct to choose : beam endA/B max comb stress(3164/3166), or i have to choose beam tension/compression(3168/3169)? I didn't understand for what is used 3168 and 3169(margins of safety). Thank you RE: Beam analysis rb1957 (Aerospace) 23 Feb 18 13:50 personally I take loads from the FEM and calc things for myself. To use the FEM calc'd values you have to accurately describe the section. MS depend on the allowables you've given the FEM ... probably using Fcy which may not be appropriate (maybe crippling is the critical allowable ?). another day in paradise, or is paradise one day closer ?