3. 3 A Reference Check
i) The forces in the material (shear force + ve and bending moment + ve)
i) The forces in the material (shear force + ve and bending moment + ve)
ii) the external forces of (force + ve)
iii) the external forces of (moments + ve)
iv) the external forces of (uniformly distributed load)
When made sections at a distance x meters, it will yield shear force, V and bending moment, M in the material due to a uniformly distributed load. Uniformly distributed load can be replaced by an equivalent system, by which the value of qs sectional surface area (wx) and acting at a distance x / 2.
v) the external forces of (non-uniform distributed load)
Equivalent system for non-uniform distributed load (eg triangle), qs is the same as the surface area of a section of ½ (qo) x. However, note that qo is equal to W / L (x). Therefore, qs can be replaced by a new equation ½ (W / L) x2 acting at a distance x / 3 of the section.
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