Years ago, I was the "layout technician" for a dry standpipe system where all of the interconnecting pipe at the bottom level, normally located immediately below the second floor structure, was located underground. This system was "designed" by the engineer-of-record, a highly reputable firm that actually did a good job. There was some conversation between our AHJ and NFPA to determine that, as a concept, this was acceptable. It turned out to be OK, and so we proceeded. Part of the "design" on the contract drawings included a small connection (2"? It's been a long time) between the dry underground and a suitable storm drain/sewer. This line had a PIV on it for control from above-ground. It may have also had a check valve, but I honestly don't recall.
Obviously, there would currently be some serious issues with the lack of air gap. I'm pretty sure this system drained into the storm drain and not the sewer as is more usually the case these days. This could possibly be handled in a pit as was suggested in an earlier posting. The standpipe system protects the very busy parking garage at McCarran Airport in Las Vegas, built approx. 1995. I no longer work for that employer, and have no current contact with any of the people involved. However, if problems had developed, I probably would have heard through the inevitable grapevine. I have heard of no problems. Margaret Zabel Cisco Fire Sprinklers, Inc. Copperopolis, CA --- David Autry <[EMAIL PROTECTED]> wrote: > This article has come to my attention. I'm just > wondering if anyone else has > seen this. Anyone have any thoughts? > > > > http://www.plumbingengineer.com/april_07/designers.php > > > > > > > > David Autry > > Plans Examiner > > Nebraska State Fire Marshal's Office > > 246 S. 14th Street > > Lincoln, NE 68508 > > 402-471-9659 > > 402-471-3118 fax > > www.sfm.ne.gov > > > > > > _______________________________________________ > Sprinklerforum mailing list > [email protected] > http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum > > To Unsubscribe, send an email > to:[EMAIL PROTECTED] > (Put the word unsubscribe in the subject field) > _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum To Unsubscribe, send an email to:[EMAIL PROTECTED] (Put the word unsubscribe in the subject field)
