High-rise

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80 PSI to any fixture, we see that we have only 45 PSI per "super tall" buildings, we will likely need to provide water zone, to overcome static and frictional pressure loss. heaters at more than one location. 45 PSI / .433 = 104 feet Conclusion High-rise buildings provide many opportunities to

Arial view of Chicago's

explore various technologies and strategies. It requires

high-rise skyline.

additional thought on our part, but it can provide a reward- ing adventure. David E. DeBord CPD, LEEDAP BD+C, ARCSAAP, GPD is Plumbing and Fire Protection Group Leader at dbHMS in Chicago. He is the ASPE Vice President Legislative (Society Level), and serves on sever- al committees. He is also an adjunct assistant professor at Illinois Institute of Technology, online instructor at UCLA, past president of ASPE - Chicago Chapter, regional rep- So, we can travel a little less than 100 feet in height resentative for ARCSA), and member of USGBC, ILFI, before exceeding our PSI limitations. That is normally IAPMO, WPC), the World Toilet Organization, ASHRAE , somewhere between eight and 11 floors, depending on the American Solar Energy Society, Ground Source Heat floor-to-floor height. When our systems exceed this Pump Consortium, and Society of Fire Protection height, we will need multiple water supply zones, which Engineers. In his spare time, he is an author of magazine employ pressure reducing valves (PRVs). articles and data book chapters. Visit the UCLA Extension We also need to be mindful with equipment such as University website for DeBord's current and future class- water heaters. The maximum PSI that we can send to es. If you are interested in the high-rise course, email water heaters is 150 PSI. This is one reason that water david.aspe@gmail.com heaters are normally located at the top of the building. In

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Page 60/Plumbing Engineer October 2013