Question

1. what is condition of bending in the beams below? a) b)

Explanation:

• For beam a), when the top - part is in compression and the bottom - part is in tension, it is a sagging (or positive) bending condition. This is the typical bending behavior when a simply - supported beam is loaded in the middle, causing the beam to curve downward.
• For beam b), when the top - part is in tension and the bottom - part is in compression, it is a hogging (or negative) bending condition. This can occur, for example, at the support of a continuous beam or a cantilever beam with a load at the free end.

Answer:

a) Sagging (positive) bending
b) Hogging (negative) bending