$(10$ points, Shear Lag$)$ A single $L861$ is used as a tension brace in a multi$-$story building,

as shown in the figure below. The $8in.$ leg of the angle is attached to a guest plate with two

lines of four $\frac{3}{4}in.$ bolts $($with standard punched holes$)$ at a spacing of $3in.$ Determine the

shear lag factor $($consider Case $2$ and Case $8)$ and effective net area.