PROBLEM $1$ PROBLEM $2$

Given the dam below:

$($a$)$ Draw the flownet

$($b$)$ Using zero elevation as the datum, determine the head at pt$.$ A;

$($c$)$ Determine the uplift pressure at pt$.$ A; and

$($d$)$ Compute the flow beneath the dam if the foundation soil is silty sand and the dam is $300$ feet long.

Impermeable Laver PROBLEM $3$

Given the dam below:

$($a$)$ Draw the flownet;

$($b$)$ Compute the rate of seepage $($in gallons per day per ft$)$ beneath the dam; and

$($c$)$ Draw the uplift pressure distribution on the base of the dam $($and label its values$).$

Silty

Sand

el$.45$

el$.0$

Shale $-$ Relatively Impermeable Compared to Overlying Silty Sand PROBLEM $4$

Given the cofferdam below:

$($a$)$ Draw the flownet and compute the rate of seepage $($in cfs per ft$)$ into the cofferdam; and

$($b$)$ Compute the uplift pressure at pt$.$ A$.$

Given the dam below:

$($a$)$ Draw the flownet;

$($b$)$ Using zero elevation as the datum, determine the head at pt$.$ A;

$($c$)$ Determine the uplift pressure at pt$.$ A; and

$($d$)$ Compute the flow beneath the dam if the foundation soil is silty sand and the dam is $300$ feet long.

el$.0$

Impermeable Laver