Using the parameters given previously in Question $7,$ and the figure below what is the total pressure loss due to friction in a straight nine?

$,7\mathrm{.}5-cm$ Cast Iron w$.$ Asphalt

$10-$cm Cast Iron w$.$ Asphalt

$0-7\mathrm{.}5-$m Copper Pipe

$--12\mathrm{.}5-cm$ Cast Iron w$.$ Asphalt

cdots$12\mathrm{.}5cm$ Steel Pipe

$-15-cm$ PVC Pipe

$,20cm$ PVC Pipe

$10-cm$ Copper Pipe

$-$A$-12\mathrm{.}5-$cm Copper Pipe

dots$15-cm$ Cast Iron w$.$ Asphalt

$-0-15-cm$ Steel Pipe

$x,20-cm$ Steel Pipe

$7\mathrm{.}5-$ cm PVC Pipe

longrightarrow$-10cmPVCpe$

$-12\mathrm{.}5-cm$ PVC Pipe

$-,15-cm$ Copper Pipe

dots,$20-cm$ Cast Iron w$.$ Asphalt

Figure $8\mathrm{.}6$ Friction Losses as a Function of Pipe Material, Diameter, and Flow Capacity

Answer:

Using the table below, What is the equivalent length for the system described in Question $7($exclude straight length of pipe$)$

Answer