Given: A cast$-$in$-$place slab$-$beam floor system is supported on a column grid of $18ft$ on centers as shown in the figure $($top figure$).$ The dimensions of the cross section for a typical beam running in the north$-$south direction have been provided in the figure $($bottom figure$).$ The miscellaneous dead load is $15psf$ for each floor $($including mechanical, electrical, ceiling, flooring, etc.$)$

Required: Calculate the load of the typical floor joist. Consider the effect of dead loads only.