The only time I've seen this was a four story assisted living facility. Each floor used different pipe sizes, and there were at least two different spacing of heads in hallways on different floors.
I wondered if smaller pipe, and ftgs, vs speed of install, i.e. labor expense, paid out. Of course that wasn't my business so I never knew answer to that question. Best Bruce Verhei > On Apr 12, 2017, at 10:08, Travis Mack, SET <[email protected]> wrote: > > The wording in the newer editions of NFPA can be interpreted that each floor > is required to have calculations. I have not had anyone enforce it yet, but > am just waiting for it to happen. I typically do as you do. > > I use my BOR demand at the gauge on the floor control valve. So, for a > demand calc, your pressures / flows are not going to change if that is the > point you use as your BOR for your calc tags. As long as all pipe sizes are > the same, pipe routing, etc.. Then the demand is the same at the floor gauge. > Now, if you were doing a supply calc, then you would have different numbers. > Travis Mack, SET > MFP Design, LLC > 2508 E Lodgepole Drive > Gilbert, AZ 85298 > 480-505-9271 > fax: 866-430-6107 > email:[email protected] > > http://www.mfpdesign.com > https://www.facebook.com/pages/MFP-Design-LLC/92218417692 > Send large files to us via: https://www.hightail.com/u/MFPDesign > LinkedIn: https://www.linkedin.com/in/travismack >> On 4/12/2017 10:04 AM, Jerry Van Kolken wrote: >> Often I do a multi-story building with typical floors. So I only provide a >> calculation on the top floor and first floor due to a higher hazard area. At >> the end of the job we are asked to provide calc. plates for every floor. I >> will just copy the typical floor information down, but I know the pressures >> will be incorrect as I move down the building. >> >> Is there a requirement for this? >> >> Jerry Van Kolken >> Millennium Fire Protection Corp. >> 2950 San Luis Rey Rd. >> Oceanside, CA 92058 >> (760) 722-2722 FX 722-2730 >> >> >> >> _______________________________________________ >> Sprinklerforum mailing list >> [email protected] >> http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org > > _______________________________________________ > Sprinklerforum mailing list > [email protected] > http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org
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