A simple pin$-$connected truss is loaded and supported as shown in the figure. All members of the truss are aluminum pipes that have an outside diameter of $3\mathrm{.}00$ in $.$ and a wall thickness of $0\mathrm{.}294$ in $.$ Determine the normal stress in each truss member. Assume $P=8$kips,$Q=2$kips,$a=4ft,b=5ft,$ and $h=5ft.$ The stresses are positive if tensile and negative if compressive.