Current Attempt in Progress

The internal shear force $V$ at a certain section of a steel beam is $69$ kips. If the beam has the cross section shown $($assume $a=2\mathrm{.}9$ in$.,b_1$

$=4$ in$.,b_2=8\mathrm{.}7$ in$.,t_w=t_f=1$ in$.,d=12\mathrm{.}9$ in$.),$ determine:

$($a$)$ the value of $Q$ associated with point $H,$ which is located $2\mathrm{.}9in.$ below the top surface of the flanged shape.

$($b$)$ the maximum horizontal shear stress ${}_{\text{m}\text{a}\text{x}}$ in the flanged shape.

Answers:

$($a$)Q=$

in$.{?}^3.$

$($b$){}_{\text{m}\text{a}\text{x}}=$

ksi.