Fixed-End Moments | Civil Engineering Interview | Skill-Lync Resources
Medium Structural Analysis Frames & Portals

What are the fixed-end moments for common loading cases?

Answer

Common fixed-end moments for span L: Concentrated load P at midspan gives FEM = PL/8 at both ends. Concentrated load P at distance 'a' from left gives FEM_left = Pb^2a/L^2 and FEM_right = Pa^2b/L^2 (where b = L-a). Uniformly distributed load w gives FEM = wL^2/12 at both ends. These are starting values for moment distribution and slope-deflection methods.

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