When did 14 bring in the 100psi requirement? 93? (or is my imagination running in the wrong direction). If the building was constructed prior to the 100psi requirement, is there an argument that you're maintaining the level of performance of the originally designed system?
From: Sprinklerforum [mailto:[email protected]] On Behalf Of Thomas Reinhardt Sent: 2017/11/01 3:09 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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