Plane rigid frame beam ......................\LinearTriangleElementStiffness.m ......................\LinearTriangleElementStresses.m ......................\PlaneFrameAssemble.m ......................\PlaneFrameElementAxialDiagram.m ......................\PlaneFrameElementForces.m ......................\PlaneFrameElementLength.m ......................\PlaneFrameElementMomentDiagram.m ......................\PlaneFrameElementShearDiagram.m