$(15$ points$)$ The floor framing system shown in Figure $2$ is used in an office building and supports an $8-$inch thick reinforced concrete slab. Your tasks are to:

a$)$ Sketch the loading diagrams for beam B$2$ and girder G$1.$

b$)$ Determine the load on column B$1.$

Consider both the dead load and the live load. The unit weight of reinforced concrete is $150$ pcf $,$ and the live load intensity for the office is $50$ psf $.$

Hint: To compute the total area load acting on the floor framing system, add the dead area load $($slab weight per area$)$ and the live area load.