$(25$ points$)$ The average flow rate is $16,000\frac{m^3}{d}$ and a peaking factor for peak hour flow rate

is $2\mathrm{.}62.$ Estimate the headlosses through the clean bar rack using an inlet channel width of

$0\mathrm{.}68$ m and the assumptions below.

Bar width $=15mm$

Bar spacing $=20mm$

The depth at the peak hour flow in the channel $=2\mathrm{.}0m$

$N_{\text{b}\text{a}\text{r}\text{s}}=\frac{\text{W}\text{i}\text{d}\text{t}\text{h}of\text{c}\text{h}\text{a}\text{n}\text{n}\text{e}\text{l}-\text{b}\text{a}\text{r}\text{s}\text{p}\text{a}\text{c}\text{i}\text{n}\text{g}}{\text{B}\text{a}\text{r}\text{w}\text{i}\text{d}\text{t}\text{h}+\text{t}\text{a}\text{r}\text{s}\text{p}\text{a}\text{c}\text{e}}$

$H_L=\frac{k[(v_{\text{t}\text{h}\text{r}\text{u}}{)}^2-(v_{\text{a}\text{p}\text{p}\text{r}\text{o}\text{a}\text{c}\text{h}}{)}^2]}{2(g)}$