given in Table $2.$

Figure $1$: Water reticulation system

This Photo bv Unknown Author is licensed under CC BY$-$SA$-$NC

Table $1$: Design case variables

Table $2$: Pipe characteristics

Write a programme using $R$ to produce:

a$)$ the water demand based on a user input design case,

b$)$ the flow rate in each pipe using Hardy Cross Method,

c$)$ the adequacy of pressure at each node if the required pressure is $150$kPa,

d$)$ a recommended height for the elevated water tank that will satisfy the pressure

requirement AND reduce estimated construction costs

e$)$ visualisation of the energy and hydraulic gradelines along the pipes