From Equation (5.6), let two terms be considered

It is known that the stress in a fibre is proportional to its distance from the neutral axis. If *y*_{max} is the distance of the extreme fibre from neutral axis then

Here, *Z* represents *Section modulus* or *Modulus of section*, i.e., *Z = I* / *y*_{max}

Thus, moment of resistance of a section is

where *f* or *p* denotes the maximum stress, tensile or compressive in nature.

For symmetrical section, the neutral axis and ...

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