Please give me a step by dtep solution for my theory of structure assignment. I also typed in the answer I cane up with but please fix any mistake and make it clearer. Thank you! Attached is a photo of the figures

Illustrative Problem:

The floor system of a building consists of a $15-cm$ thick reinforced concrete slab resting on four steel floor beams, which in turn are supported by two steel girders, as shown in the figure. The cross$-$sectional areas of the floor beams and girders are $94\mathrm{.}8c{m}^2$ and $337\mathrm{.}4c{m}^2,$ respectively. Determine the dead loads acting on the beams CG

$($a$)$ Framing Plan

$($b$)$ Load on Beam $CC$

$($c$)$ Load on Bcam DHand DH and the girder AD$.$

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I tried Solving it and came up with this, is this right?

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$($A$)$

Dead load of concrete slab acting on beam CG$.$

Volume of slab.$=??$

Structural weight $=23\mathrm{.}6k\frac{N}{m^3}$

$V=24m^2*0\mathrm{.}15m=3\mathrm{.}6m^3$

$VW=3\mathrm{.}6m^2*23\mathrm{.}6k\frac{N}{m^3}$

$=84\mathrm{.}96kN$

$.$

$($a$)$ Framing Plan

$($b$)$ Load on Beam $CG$

$($c$)$ Load on Beam DH

$($d$)$ Load on Girder AD

Dead Load of Beam CG

$Ain{m}^2=94\mathrm{.}8c{m}^2{m}^2$

$=94\mathrm{.}8c{m}^2{100}^2$

$=0\mathrm{.}00948m^2$

volume $of$ Slab $=AL$

$=0\mathrm{.}00948m^{2}8m$

$=0\mathrm{.}07584m^3$

Dead Load $-VW=0\mathrm{.}07584m^{3}77k\frac{N}{m^3}$

$=5\mathrm{.}83968kN$

$=5\mathrm{.}84kN$

Total $=D{L}_s+D{L}_{ca}=84\mathrm{.}96kN+5\mathrm{.}84kN$

$=90\mathrm{.}8kN$

Load on $CG=\frac{T}{L}$ of beam

$=90\mathrm{.}8k\frac{N}{8}m$

$=11\mathrm{.}35k\frac{N}{m}$

Dead Loads Acting on Beam DH

$($B$)$

$V_{\text{s}\text{l}\text{a}\text{b}}=12m^2\mathrm{.}15m=1\mathrm{.}8m^3$

$D_{\text{s}\text{l}\text{a}\text{b}}=V_{\text{s}\text{l}\text{a}\text{b}}{W}_{co}$

$=1\mathrm{.}8m{p}^{5}236k\frac{N}{m^3}$

$=42\mathrm{.}48kN$

Total Load $=D{L}_{\text{s}\text{l}\text{a}\text{b}}+D{L}_{DH},$;$D{L}_{OH}=D{L}_{ca}$

$=42\mathrm{.}48kN+5\mathrm{.}84kN$

$=48\mathrm{.}32kN$

$]=[T\frac{L}{L_{\text{B}\text{e}\text{a}\text{m}}}$

Dead Load of Girder AD

$($c$)$

$A_{\text{G}\text{i}\text{r}\text{d}\text{e}\text{r}}=337\mathrm{.}4c{m}^2{100}^2$

$=0\mathrm{.}03374m^2$

Vainder $=AL=0\mathrm{.}03374m^{2}9m$

$=0\mathrm{.}30366m^3$

$DL=VW=0\mathrm{.}30366m^{5}77k\frac{N}{m}{s}^s$

$=23\mathrm{.}38182kN=23\mathrm{.}38kN$

$TL=23\mathrm{.}38k\frac{N}{9}m$

$=2\mathrm{.}59777778k\frac{N}{m}$

$=2\mathrm{.}60k\frac{N}{m}$

With loads $48\mathrm{.}32kN$ acting on points A and D$,$ and $90\mathrm{.}8$ KN on points $B$ and $C.$