QUESTION $1$

Please Write down the answers on a page for the following question

The truss shown in Figure q$1$ below is made of timber $($SA Pine$).$ It is supported by a pin at D and a roller at $A.$ Determine the member forces on the structure using the FORCE METHOD. Applied on the truss is a UDL of $2k\frac{N}{m}$ along member DC$,$ and a force of $18\mathrm{.}03kN$ at joint C$,$ which makes an angle of $33\mathrm{.}7$ with the horizontal respectfully. The truss is reported to be made using $2$ types of timber profiles, and these are clearly marked as $1$ or $2($indicated with a boxed number, $1$ and $2).$ It is reported that for profile $1,$ the area, $A_1=625c{m}^2,$ and for the second profile, $A_2=750c{m}^2.$ Take E $=55$ GPA.

FIGURE Q$1$