Based on pressure requirements, the system is adequate to supply maximum day demands. Another local regulation requires analysis of peak hour demands, with slightly lower allowable pressures. Since the peak hour demands also share the industrial load from the Average Day condition, Peak Hour can be inherited from Average Day. In this instance, Peak Hour could inherit just as easily from Maximum Day.

Another scenario is also created to reference these new demands, as shown below:

Note again that we did not change any physical data, so the physical alternatives remain the same.