The beam shown in figure below is to be analyzed by the stiffness matrix method. Four elements are to be considered for the given beam. What will be the order of structural stiffness matrix, if only bending is to be considered:

These are the eight major typre of strutures that are studied in civil engineering:
1. Load-bearing structures
2. Truss structures
3. Frame structures
4. Cable and arch structures
5. Pre-engineered structures
6. Mass structures
7. Tensile structures
8. Composite structures