The sieve analysis

on each media yields the data shown below.

$3.$a$)$ Determine the effective size and the

uniformity coefficient for each of the media

using a log$-$probability plot. $($Instead of using a

log$-$probability plot, you can use a normal x$-$axis

by using one$-$sided z$-$score values,

$3.$b$)$ The water and media have the

characteristics shown in the table below.

Calculate the headloss for a clean bed using the

Fair$-$Hatch equation for a stratified bed $($details

on table below$)$ if the filter has $50cm$ of sand

and $50cm$ of anthracite. Note that this is an

unusual filter design: normally the anthracite

layer might be about twice the depth of the

sand.