Discussion
In the slope- deflection equations, deformations are considered to be caused by:
Answer: D
The slope-deflection equations consider deformations caused by bending moments only.
The method expresses the end moments of each member in terms of joint rotations and relative settlement, using only the flexural stiffness of the members (4EI/L, 2EI/L and 6EIΔ/L2). Axial deformation of members and shear deformation are neglected because, in ordinary frames, they are small compared with bending deformation.
Any option that adds axial forces or shear forces as causes of deformation describes a more exact analysis than the slope-deflection method uses.
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