Structural Engineering:

Ned : Design Axial Force

Npl

$,$

Rd : Plastic axial load carrying capacity

$($

n

$=$

$$Ned

$/$

$$Npl

$,$

Rd

$)$

Please provide the formula how to get the

$($

Npl

$,$

Rd

$)$

$$and support with one simple example for the above

$($

Npl

$,$

Rd

$)$

$$

hope expert can understand the above writing, since Chegg study system cannot support image file

$/$

photo anymore. Thank you.