Pressure Drop in a fire fighting network with loops

[tj00343]

Hello Everyone,

Can someone please explain to me how I would go about verifying the External Static Pressure of a pump that feeds a pressurized fire fighting network with loops in it. An image of the network is attached. I'm not being able to grasp the concept of pressure drop in a pressurized loop and to imagine the hydraulics involved.

Thank you for your response

 

[.Scott]

The key is flow. If there is no flow, the only variation in pressure will be the result of elevation changes.
If there is flow, then you basically have a resistor network. So the changes in pressure will be elevation plus the affects from flow.