Task #$1$: Gerber structure

Determine the function form of internal force and support force influence lines of the signed elements. $($supp A$,$B$,$ C$,$ bar elements $1-4$ and Internal forces to k$1$ and k$2)$

Present the figures as well! Determine and present the figures by AXIS too.

Determine the maximal internal force volumes of bar $2$ and $K1.$

The parameters are given in tha table.

$a(m)=2\mathrm{.}6$

$b(m)=3\mathrm{.}2$

$c(m)=1\mathrm{.}3$

$g(k\frac{N}{m})=21$

$p(k\frac{N}{m})=31$

$J1(kN)=26$

$J2(kN)=18$

$k(m)=0\mathrm{.}8$

$El(kN{m}^2)=6\mathrm{.}00E+08$

$R6.[\frac{m}{k}N)=5\mathrm{.}00E-05$