PROBLEMS

$9\mathrm{.}1$ A $\frac{1}{2}$ in$.10$ in$.$ plate is attached to another plate by means of six $\frac{3}{4}in.$ diameter bolts, as shown in Figure P$9\mathrm{.}1.$ Determine the net area of the plate.

$9\mathrm{.}2$ A $\frac{3}{4}$ in$,10$ in$.$ plate is connected to a gusset plate by $\frac{7}{8}-$ in$.$ diameter bolts, as shown in Figure P$9\mathrm{.}2.$ Determine the net area of the plate.

$9\mathrm{.}3$

$9\mathrm{.}4$ An L $84\frac{1}{2}$ has staggered holes for $7/8$ in$.$ diameter bolts, as shown in rigure$-$P$9\mathrm{.}4.$ Determine the net area in$.2$

FIGURE P$9\mathrm{.}1$ Plate to plate connection.

$9\mathrm{.}1$ please