Question

When drawing the shear force and bending moment diagrams, you must consider a new segment:

a) Whenever there is a concentrated load or moment
b) Only if there is a change in loading or support
c) At the midpoint of the structure
d) Every third section along the structure

Answer 1

A new segment in shear force and bending moment diagrams must be considered only if there is a change in loading or support, not at arbitrary points such as the midpoint or every third section of the structure.

Step-by-step explanation:

When drawing shear force and bending moment diagrams, you must consider starting a new segment whenever there is a change in the conditions affecting the structure. This can include points where there is a concentrated load or moment (concentrated force), where there is a change in loading such as distributed loads beginning or ending, and at points of support where the type of support provides a reaction force or moment.

Therefore, the correct answer to when a new segment should be considered in shear force and bending moment diagrams is b): Only if there is a change in loading or support. It is not based on specific sections of the structure, such as at the midpoint or every third section, but rather on specific physical changes in the structure's loading conditions.