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 ymax is the distance of the extreme fibre from neutral axis then
Here, Z represents Section modulus or Modulus of section, i.e., Z = I / ymax
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 ...