You need to know the method of determining fire flow in your jurisdiction. Once you know that, determine the fire flow and the number of hydrants req'd to be used to get that flow.
Then, just simple hazen Williams formulae. You will have starting flow and pressure. Plug and chug to prove it. From: Sprinklerforum [mailto:sprinklerforum-boun...@lists.firesprinkler.org] On Behalf Of Welch, Bobby Sent: Tuesday, October 24, 2017 12:25 PM To: sprinklerforum@lists.firesprinkler.org Subject: Underground Main I am working on a underground project were the new private fire main is feeding the building sprinkler system and two hydrants. I am told that the underground has to be calculated. I understand how I calculate the building to prove that the sprinkler system will work but how do I prove that the hydrants work as well?
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