Show your system of equations for each node and for each loop.

Explain your selection of the equations from the conservation of mass step.

Show the first two iterations of $.$

Hint for both problems:

If the headloss equation is solved with Darcy Weisbach,

If the headloss equation is solved with Hazen Williams,

Find flows in pipes. Use Darcy$-$Weisbach $)=(2$

At node $1,$ the demand is $2$

At node $2,$ the demand is $4$

At node $3,$ the demand is $1$

At node $4,$ the demand is $3$

$\backslash$table$[[$Pipe$],[1],[2],[3],[4],[5],[6],[7]]$

$k_{?}$

$0\mathrm{.}38$

$2\mathrm{.}89$

$2\mathrm{.}53$

$12\mathrm{.}13$

$2\mathrm{.}17$

$2\mathrm{.}89$

$0\mathrm{.}94$

$\backslash$table$[[$initial Q$],[6\mathrm{.}0],[2\mathrm{.}0],[2\mathrm{.}0],[0\mathrm{.}5],[1\mathrm{.}5],[1\mathrm{.}5],[4\mathrm{.}0]]$