Having them at the same elevation is the most conservative. If you have your reservoir HIGHER, then it will place more artificial flow. However, some engineers (and WaterCAD forums) would argue that the you should set your Reservoir Elev to the hydrant elevation where the fire flow test was performed, and the pump to the actual main elevation…which can be a differential between 4-6 ft. But you will need to set that based on your design and risk.
It would be nice if you could explain how to size a wet-well and design a pumping station (control set point elevations) for wastewater distribution forcemain network. I will totally pay for that...
Also would love to see a video on how to go about it when you've got two connection points to the system!
Ahh the famous question of how to model two points of connection :-) I can do that! but it comes with many disclaimers
Should the reservoir be the same elevation as the pump? Using elevation of the hydrant obtained from google earth?
Having them at the same elevation is the most conservative. If you have your reservoir HIGHER, then it will place more artificial flow. However, some engineers (and WaterCAD forums) would argue that the you should set your Reservoir Elev to the hydrant elevation where the fire flow test was performed, and the pump to the actual main elevation…which can be a differential between 4-6 ft. But you will need to set that based on your design and risk.
It would be nice if you could explain how to size a wet-well and design a pumping station (control set point elevations) for wastewater distribution forcemain network. I will totally pay for that...
I’ll add that to the list. I typically have an excel sheet that helps develop the inputs for WaterCAD. Perhaps I can make that available for use.