Wario's new racecourse will require I$-$beams for some overpasses and bridges. The strongest shear force he expects the I$-$beams to experience is $30$ kips $,$ which would only happen if all $12$ racers are aligned perfectly at just the right spot. Approximating the I$-$beams as comprising three rectangles, use the following dimensions for your calculations:

$b=6in,t=0\mathrm{.}5in,h=12in,h_1=10\mathrm{.}5in$

a$)$ Find the maximum shear stress in the web to $3$ decimals.

${}_{\text{m}\text{a}\text{x}}=$

ksi

b$)$ Find the minimum shear stress in the web to $3$ decimals.

${}_{\text{m}\text{i}\text{n}}=$

ksi

Wario's new racecourse will require I$-$beams for some overpasses and bridges. The strongest shear force he expects the I$-$beams to experience is $30$ kips $,$ which would only happen if all $12$ racers are aligned perfectly at just the right spot. Approximating the I$-$beams as comprising three rectangles, use the following dimensions for your calculations:

$b=6in,t=0\mathrm{.}5in,h=12in,h_l=10\mathrm{.}5in$

a$)$ Find the maximum shear stress in the web to $3$ decimals.

${}_{\text{m}\text{a}\text{x}}=$

ksi

b$)$ Find the minimum shear stress in the web to $3$ decimals.

${}_{\text{m}\text{i}\text{n}}=$

ksi