Thanks for the information. I will do one set of calcs to size my PRV hose valves from floors 1-4 with the 3 standpipes flowing a total of 1000gpm and an additional set of calcs for floors 5-25 with 2-standpipes flowing a total of 750gpm.
Dewayne Martinez Fire Protection Design Manager *TOTAL* *Mechanical* *Building* *Integrity* W234 N2830 Paul Rd. Pewaukee, WI 53072 [email protected] Ph: 262-522-7110 Cell: 414-406-5208 http://www.total-mechanical.com/ [image: A close up of a sign Description generated with high confidence] *From:* Sprinklerforum <[email protected]> *On Behalf Of *MFP Design, LLC *Sent:* Wednesday, September 19, 2018 2:12 PM *To:* [email protected] *Subject:* RE: multi-height standpipes *I believe this is spelled out in the NFPA 14 handbook. You will need to do 2 sets of calculations. Where you only have 2 standpipes, you calculate the 750 gpm. When you get down to the level with 3 standpipes, you do another calc that goes to 1000 gpm.* [image: MFP_logo_F] Travis Mack, SET MFP Design, LLC 3356 E Vallejo Ct Gilbert, AZ 85298 480-505-9271 fax: 866-430-6107 email:[email protected] http://www.mfpdesign.com <https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.mfpdesign.com%2F&data=02%7C01%7C%7C1121d49f9e6b4cf248f108d4df580e77%7C14e5497c16da42e69ffa77d19bafe511%7C0%7C0%7C636379016677342180&sdata=HJ8OA4xyeHAoxXNz5mu%2FYfycgtd5nsFrrpvzulZiNkQ%3D&reserved=0> https://www.facebook.com/pages/MFP-Design-LLC/92218417692 <https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.facebook.com%2Fpages%2FMFP-Design-LLC%2F92218417692&data=02%7C01%7C%7C1121d49f9e6b4cf248f108d4df580e77%7C14e5497c16da42e69ffa77d19bafe511%7C0%7C0%7C636379016677342180&sdata=H%2BwdcgK8DLGBcNoqJEvUrzsXngySwkX56Vgf9gM9EGk%3D&reserved=0> Send large files to us via: https://www.hightail.com/u/MFPDesign <https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.hightail.com%2Fu%2FMFPDesign&data=02%7C01%7C%7C1121d49f9e6b4cf248f108d4df580e77%7C14e5497c16da42e69ffa77d19bafe511%7C0%7C0%7C636379016677342180&sdata=eGdMZGu2wXhUupGwgGTrqF3b54OP5%2BAZvlHhABSexWY%3D&reserved=0> LinkedIn: https://www.linkedin.com/in/travismack <https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.linkedin.com%2Fin%2Ftravismack&data=02%7C01%7C%7C1121d49f9e6b4cf248f108d4df580e77%7C14e5497c16da42e69ffa77d19bafe511%7C0%7C0%7C636379016677342180&sdata=tT5E7LsZjSmyreKi4gDCa70EWN%2BZodi%2FhbeCbHNRijI%3D&reserved=0> *“**The bitterness of poor quality remains long after the sweetness of low price is forgotten.”* *From:* Sprinklerforum <[email protected]> *On Behalf Of *Dewayne Martinez *Sent:* Wednesday, September 19, 2018 12:09 PM *To:* [email protected] *Cc:* Dewayne Martinez <[email protected]> *Subject:* multi-height standpipes I have a high rise which contains 3 standpipes. Two of them go up 25 stories and the third only 4 stories. When I calculate them do I pick up 2@ 250gpm on the most remote high standpipe followed by 250 on the remaining stairwells including the low one or just the two high ones? To complicate the matter even more the high standpipes would not have a pressure reducing hose valves in the calculation but the low standpipe would need one. Thanks, Dewayne Martinez Fire Protection Design Manager *TOTAL Mechanical* *Building* *Integrity* W234 N2830 Paul Rd. Pewaukee, WI 53072 [email protected] Ph: 262-522-7110 Cell: 414-406-5208 http://www.total-mechanical.com/ [image: A close up of a sign Description generated with high confidence]
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