Sounds like the submitter likely shouldn't be designing standpipes. Before even thinking of answering, please provide height of building and whether Skokie FD has any particular equipment issues or published policies on standpipe design, particularly starting pressures at Class 1 connections.
Steve L. From: Sprinklerforum [mailto:[email protected]] On Behalf Of Thomas Reinhardt Sent: Wednesday, November 01, 2017 12:09 PM To: [email protected] Subject: Standpipe Pressure Question. Question for the forum. I have a complete renovation of a school. They are required to have 3 standpipes installed. The designers approached me and asked if one of the standpipes could have a reduced pressure. The reason is because then they would have to upgrade the electrical power to the pump. This in turn would make them upgrade the power for the backup generator. This would create an economic problem for the school district. In researching NFPA 14. I found that the minimum residual pressure at 2.5 in. should be 100psi for each standpipe. Am I interpreting this correct. They asked that 1 standpipe be only 65psi (doesn't sound correct). NFPA 14 says that standpipes shall provide 250 gallons. All standpipie hose connections to be class 1 systems. Am I missing something. Thanks Tom Reinhardt Fire Inspector/Plan Reviewer Skokie Fire Department 7424 Niles Center Road Skokie, IL 60077 Office: 847-982-5342 [email protected]<mailto:[email protected]>
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