What height is required for a trash rack which is to remove trash for flows up to and

including the $3$ month ARI event with QEVENT $=1\mathrm{.}2$ m$3/$s$?$ Assume that the bars are

$10$ mm thick and the clear spacing between bars is $60$ mm$.$ The channel is $5$ m wide

and the coefficient of contraction for the trash rack is Cc is $0\mathrm{.}8.$ Base your design on

assuming $50\%$ blockage of the trash rack.