QUESTION $3$

Action's evaluation

$($a$)$ Permanent and imposed actions for slab, secondary and primary beams and columns for one current level of an office building structures presented in the next figure.

Assume: $-$ precast slab concrete $h_s=125mm,$

for floor and ceiling assume $25k\frac{g}{m^2}$

density of concrete $23\mathrm{.}5k\frac{N}{m^3},$

secondary beams: interior $-200\backslash$times $400$ mm$,$ exterior$/$marginal $-300\backslash$times $700$ mm$,$

primary beams $350800mm,$

columns $450450mm.$

$($b$)$ Find the value of actions for combination of permanent and imposed action for beams and columns:

ultimate limit state $($ULS$)$: strength $-[1\mathrm{.}35$ G$],[1\mathrm{.}2$ G$,1\mathrm{.}5$ Q$],[1\mathrm{.}2$G$,1\mathrm{.}5,Q]$