I've done separate calcs in the past just showing the friction losses occurring 
during 150% of rated flow. Shouldn't this be done anyways to verify that the 
municipal water pressure isn't getting dangerously low?

I'd just show the fire pump flowing the 150% with nothing else going on just to 
verify A) The UG is sized appropriately and B) You're not sucking the municipal 
water dry.




      
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