Question $2(10$ points$)$

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The City of Atlanta $($population $498,720-2020$ census$)$ has requested your assistance in evaluating its solid waste collection system. The City of Atlanta collection data are as follows:

Average truck capacity $=15m^3$; Average observed compaction ratio $=2\mathrm{.}87$

Crew size $=2$; Number of pickups $=\frac{1}{w}k($no rear$-$of$-$house service$)$

Average number of cans per stop $=\frac{2\mathrm{.}63}{?}$ wk at $0\mathrm{.}1136\frac{m^3}{?}$ can

Average number of residents per stop $=5$

Average uncompacted density $=105\mathrm{.}76k\frac{g}{g}{n}^3$

Average transport time to disposal site including delays and dumping $=1\mathrm{.}78\frac{h}{?}$ trip

Average number of trips to disposal site $=\frac{2}{d}$; Rest breaks $=2$ at $28\mathrm{.}0$min

Average maintenance downtime $=37\mathrm{.}0mi\frac{n}{d}$; Average workday $=8\mathrm{.}00h$

Average percent of trucks out of service for major repairs $=12\mathrm{.}0\%$

Determine the meantime per collection stop plus the mean time to reach the next stop.

$0\mathrm{.}075hr=4\mathrm{.}5$min$=270sec$

$0\mathrm{.}055hr=3\mathrm{.}3$min$=198sec$

$0\mathrm{.}025hr=1\mathrm{.}5$min$=90sec$

$0\mathrm{.}010hr=0\mathrm{.}602$min$=36sec$