3. Dynamic loads fluctuate with time. They comprise of repeated and impact loads.
4. Repeated loads are forces which are used several times. These types of loads can make a difference in the magnitude, and occasionally also in the sense, of the internal forces. A good example is an off-balance motor.
6. External forces are also categorized as distributed and concentrated.
7. Uniformly distributed loads belong to a distributed load that contains a constant value like 1kN/m. It’s magnitude stays uniform all through the length. Uniformly distributed load is generally denoted by W and is stated as intensity of udl over the beam, slab etc. The instance of this load is dead weight of a rolled-steel I beam.
9. Another common category for external forces which are labeled as axial, eccentric, and torsional.
10. An axial load pertains to a force whose resultant goes over the centroid of a section under consideration and stands upright to the plane of the section.
11. An eccentric load stands for a force that stands upright to the plane of the section under consideration but not going through the centroid of the section, therefore bending the supporting member.