1. Civil Engineering CBE110
Lecture 10

2. Analysis of Frames Fig. 1. Types of frame joints.
Fig. 2. Free body diagrams for frames.

3. Stability of frames: E = 3j + c, U = 3m + r
Analysis of Frames
Stability of frames: E = 3j + c, U = 3m + r
Satisfying the geometrical stability, any frame can be classified as:
Unstable if U < E.
Stable and statically determinate if U = E.
Stable and statically indeterminate if U > E, where the degree of indeterminacy is given by U – E = (3m + r) – (3j + c)

4. Example (1) Draw the internal force diagrams for the shown frame.
Analysis of Frames
Example (1) Draw the internal force diagrams for the shown frame.