$7-79*$ The beam shown in Fig. P$7-79$a is composed of two $1\backslash$times $6-$in$.$ and two $1\backslash$times $3-$in$.$ hard maple boards that are glued to$-$ gether as shown in Fig. P$7-79$b$.$ Determine the magnitude and location of

a$.$ The maximum tensile flexural stress in the beam. b$.$ The maximum horizontal shearing stress in the beam$7-{79}^{**}$ The beam shown in Fig. P$7-79$a is composed of two $1$

$6-$in$.$ and two $13-$in$.$ hard maple boards that are glued to$-$

gether as shown in Fig. P$7-79$b$.$ Determine the magnitude and

location of

a$.$ The maximum tensile flexural stress in the beam.

b$.$ The maximum horizontal shearing stress in the beam.

answers are: a$)$ stress$\_$max $=1196$ psi $($T$)$ @ x$=2$ ft and y$=-3$in$,$ b$)$ shear$\_$max $=96\mathrm{.}7$ psi at x$=0$ft and y$=$plus or minus $1\mathrm{.}5$ in