Homework #$7($due $9/23)$

$($a$)$ Using Equation $(6\mathrm{.}23),$ find the $q^2$ equation for concrete with $C=3600$ and

$T=360$ psi. Observe that shear strength $q$ increases as $p$ increases. This is important

for concrete columns because circumferential must be added.

$($b$)$ Find the $q^2$ equation when both $C=3600$ psi and $T=3600$ psi. Observe that

shear strength $q$ increases as tensile strength $T$ increases. Shear strength is high in

ultra high performance concrete $($UHPC$)$ because brass splinters are added to

increase tensile strength $T.$