Water at a rate of $648\frac{m^3}{h}r$ and at $30C($density $=1000k\frac{g}{m^3},$ viscosity $=1\mathrm{.}01{10}^{-6}Pa*s)$ is delivered

to a closed tank B $(216\mathrm{.}5$kPa$)$ at a higher elevation by using a pump as shown in Figure $1.$ Both tanks are

large in size where the pressure in tank $A$ is given as $132\mathrm{.}2$kPa. The pipe in used is made from galvanized

steel with a diameter of $250mm.$ The description of both suction and delivery line are shown in Table $1.$

Figure $1$ Water pump network.

Table $1$ Description of suction and delivery line.

Given that the pump efficiency is $70\%$ and the NPSH required for the given volumetric flowrate is $3m$ :

b$)$ Suggest the optimum design layout of the above system as to avoid cavitation, subsequently

justify your selection.