For the beam shown below, calculate $a,c,in,$ and $M_n$ by varying the amount of tension reinforcement and plot a graph of $A_s$ vs $M_n.$ You may create an Excel spreadsheet to perform the calculation. Given: $f_y=60,000$ and $f_c^{\text{'}}=4,000.$ Note: Vary $A_s$ from $1\mathrm{.}0i{n}^2$ to $5i{n}^2$ at $0\mathrm{.}5i{n}^2$ increment.

Recommended format:

$\backslash$table$[[b,d,A_s,f^{\text{'}}c,{}_1,{}_s,f_y,a,c,T,M_n,M_n$