For the non$-$parallel chord truss bridge, $x=3m$ and $y=2\mathrm{.}5m.$

$(1)$ Determine the influence lines for $F_{CD}(F_1),F_{Cd}(F_2)$;

$(2)$ The bridge is to be designed for the equivalent moving load detailed below with $P=$

$115kN$ and $q=10k\frac{N}{m}.$ Compute the maximum tensile and compressive axial forces in member

Cd $(F_2).$

Hint: Assume tensile forces when establishing relationships between axial forces of

members and reaction forces

For members $CD$ and $Cd$ :

Left Hand Freebody:

Right Hand Freebody: