Frame Analysis in a High$-$Rise Building Project

Context: Assume you are working as a

structural engineer at $$Skidmore$,$

Owings & Merrill $($SOM$),$ a firm known

for designing high$-$rise buildings. You're

tasked with analyzing the internal

loadings in one of the support frames of

a skyscraper under construction.

Given that w $=6$ kN$/$m$,$ determine the

internal loading at point D in the

following frame struc