Example Problem #$2($SI Units$)$

A new culvert at a roadway crossing is required to pass a $50-$year flow rate of $8\mathrm{.}5\frac{m^3}{s}.$ Use the following site conditions:

EL $L_{nd\text{:}}$:$33\mathrm{.}528m$ based on adjacent structures

Shoulder Elev: $34\mathrm{.}595m$

Elevation of Stream Bed at Culvert Face: $30\mathrm{.}48m$

Natural Stream Slope: $2$ percent

Tailwater Depth: $1\mathrm{.}219m$

Approximate Culvert Length: $76\mathrm{.}200m$

Design a reinforced concrete box culvert for this installation. Try both square edges and $45$degree beveled edges in a headwall. Do not depress the inlet $($no FALL$).$