Let's build a ETABS model for the example structure:

Material: R$.$C$.$

Size of structural member

Beam: $4070cm$

Column: $6060cm$

Slab: $15$ cm $($thickness$)$

Live load:

Classroom $($assumed$)$

${}_{L,RF}=0\mathrm{.}20t\frac{f}{m^2}$

${}_{L,2F}=0\mathrm{.}25t\frac{f}{m^2}$

Dead load:

${}_{D,RF}=113\mathrm{.}1108tf$

${}_{D,2F}=126\mathrm{.}7488tf$

Earthquake load:

Static

l$.$ What's the total axial force of nine columns under dead load case?

What's the fundamental period of the structure, and please compare it with the result calculated from the approximation formula.

What's the base shear of the structure subjected to earthquake load? Please compare it with design one.

Forces applied on the specified frame $($color in orange$)$ under live load case.

please answer this one using ETABS