PROBLEM: $($Refer to sketch #$1)$

GIVEN: $1.$ Influent Elevation of M$.$H$.$ A$-1={139\mathrm{.}20}^{\text{'}}$

$2.$ Effluent Elevation of M$.$H$.$ A$-2={146\mathrm{.}60}^{\text{'}}$

$3.$ Influent Elevation of M$.$H$.$ A$-2={146\mathrm{.}90}^{\text{'}}$

$4.$ Effluent Elevation of M$.$H$.$ A$-3=147\mathrm{.}72\text{'}$

$5.$ Bottom of M$.$H$.$ diameters $={4\mathrm{.}00}^{\text{'}}$

$6.$ Standard distance from batterboards to invert is as follows:

M$.$H$.A-1$ to $A-2={10\mathrm{.}00}^{\text{'}}$

M$.$H$.A-2$ to $A-3={10\mathrm{.}00}^{\text{'}}$

$7.$ Hub offset is ${8\mathrm{.}00}^{\text{'}}$ for M$.$H$.$ A$-1$ to A$-2$ and ${10\mathrm{.}00}^{\text{'}}$ for M$.$H$.$ A$-2$ to A$-3.$ The length of the batterboards is ${10\mathrm{.}00}^{\text{'}}.$

PROBLEM: $1.$ Complete the attached set of surveying notes for sewer line construction staking.

$2.$ a$.$ Draw the plan of the sewer line on engineering paper at a scale of $1^{\text{'}\text{'}}={40\mathrm{.}00}^{\text{'}}.$

b$.$ Indicate the manholes, the centerline of the sewer line, the location of the hubs, the batterboards and the stations. Note the hub offsets and the stations at each point.