$1$a$)$ At what strain do we assume $4000$psi concrete begins to crush? at whats strain do we assume $5000$psi concrete to begin to crush?

$1$B$)$ What three final checks must be made when designing for flexure?

$1$C$)$ what is the Value of $\backslash$beta $1$ for $5,500$psi concrete?

$1$D$)$ What type of failure occurs when the strain in the tension steel is $0\mathrm{.}00426$ at failure?

$1$E$)$ What two values are used to squish and squash the parabolic stress distribution into the Whitney Stress Block?