Which of the following is true regarding about RBM (resist bend moment) as it applies to heavy truck frames?

A) product of section modulus and material strength
B) specifies frame flexibility
C) should be used stand-alone to spec frames because it factors both strength and flexibility
D) all of the above

Resist Bend Moment

The resistance offered by a structural element to bending, which is a measure of its stiffness and ability to withstand bending forces.

Frame Flexibility

The ability of a vehicle's frame or chassis to flex or bend without permanent deformation, often an indicator of how a vehicle handles stress and vibrations.

Section Modulus

A geometric property of a cross section that indicates its capacity to resist bending. It is used in the design and analysis of beams and other structural elements.