$P2\mathrm{.}13.$ The uniformly distributed live load on the floor plan in Figure $P2\mathrm{.}9$ is $100l\frac{b}{f}{t}^2.$ Establish the live loading for members $($a$)$ floor beam B$3,($b$)$ floor beam B$4,($c$)$ girder G$3,$ and girder G$4.$ Consider the live load reduction if permitted by the ASCE standard.

$(1)$

$(2)$

$(3)$

P$2\mathrm{.}9$