For the given truss system, first calculate the supports A and $B$ reactions, the forces in the bars $a,b,c,d,e,f,g,h,$i and then determine the most critical bar$($s$).$ The horizontal bars are $2m$ long, vertical bars are $1\mathrm{.}5m$ long and the diagonal bars are $2\mathrm{.}5m$ long. $3$ tons of vertical forces are applied to nodes $[$abde$]$ and $[$cef$]$ and $4$tons of horizontal force is applied to node $[$bgh$].$