Technician A says that the section modulus (SM)of a frame member is a measure of its twistability.Technician A says that the higher the section modulus the more rigid a frame member is.Who is correct?
A) Technician A only
B) Technician B only
C) Both A and B
D) Neither A nor B

Question

Quizplus · Accepted Answer

The section modulus (SM) is indeed a measure of a frame member's resistance to bending, not twistability, which makes Technician A's statement incorrect in that context. However, the statement that a higher section modulus indicates more rigidity in a frame member is correct, aligning with Technician B's claim. Both technicians are correct in the context that a higher SM indicates more rigidity, but the explanation provided by Technician A regarding twistability is not accurate for SM.

Technician a Says That the Section Modulus (SM)of a Frame