Double interlock is a dry system calc all day long. Single interlock, you can grid and don’t have the 30% penalty in non-storage.
Travis Mack, CFPS, CWBSP, RME-G, COC, SET Senior Engineering Manager MFP Design 480-505-9271 ext. 700 C: 480-272-2471 [email protected]<mailto:[email protected]> www.mfpdesign.com<http://www.mfpdesign.com> 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> From: Sprinklerforum <[email protected]> On Behalf Of Jim Jordan via Sprinklerforum Sent: Tuesday, January 25, 2022 9:25 AM To: [email protected] Cc: Jim Jordan <[email protected]>; 'Matt Grise' <[email protected]> Subject: RE: Pre-Action Calculations Double interlocks. Thanks, Jim -----Original Message----- From: Sprinklerforum <[email protected]<mailto:[email protected]>> On Behalf Of Matt Grise via Sprinklerforum Sent: Tuesday, January 25, 2022 10:22 AM To: [email protected]<mailto:[email protected]>; [email protected]<mailto:[email protected]> Cc: Matt Grise <[email protected]<mailto:[email protected]>> Subject: RE: Pre-Action Calculations How many interlocks you got? Matt -----Original Message----- From: Sprinklerforum <[email protected]<mailto:[email protected]>> On Behalf Of Jim Jordan via Sprinklerforum Sent: Tuesday, January 25, 2022 10:21 AM To: [email protected]<mailto:[email protected]> Cc: Jim Jordan <[email protected]<mailto:[email protected]>> Subject: Pre-Action Calculations Maybe I have been doing it wrong for the last 15 years, but twice in the last year I've been instructed once by an FPE and once by an AHJ to calculate a pre-action system as a wet system vs. using the area increase for a dry system, and the most recent engineered drawing I've received for a project has the pre-action ran as a grid system. Am I mistaken in my perception that these systems should be treated and calculated as dry systems? Thanks, Jim -- This e-mail originated from the e-mail server at Dunk Fire & Security AR Alarm LIC: E 05-046●Regulated by the Arkansas Board of Private Investigators and Private Security Agencies●1 State Police Plaza Drive●Little Rock●AR● 72209● 501.618.8600. AR Fire Suppression License # FFS-085; OK Fire Alarm License #1690. This email, and any attachments contained in this message is for the intended recipient(s) only, may be privileged, confidential, protected and/or proprietary. If the reader of this message is not the intended recipient, or an employee or agent responsible for delivering this message to the intended recipient, you are hereby notified that any retention, dissemination, forwarding, printing, or copying of this communication is strictly prohibited. If you have received this communication in error, please notify Dunk Fire & Security at 479.750.1833 immediately and delete this message from your computer. Thank you. _______________________________________________ Sprinklerforum mailing list [email protected]<mailto:[email protected]> https://linkprotect.cudasvc.com/url?a=http%3a%2f%2flists.firesprinkler.org%2flistinfo.cgi%2fsprinklerforum-firesprinkler.org&c=E,1,e8K-9mSmxazOwuTGbZs7rQ06yU5INpFRBhv674r5Hy7_GGWKBo-7JU-gK_fLWFXuirVhlPf4_MrfA3tmi2e8jb7UVjbi9V1u6KEbQo21FWyrcTd_3B0g7XoS&typo=1<https://linkprotect.cudasvc.com/url?a=http%3a%2f%2flists.firesprinkler.org%2flistinfo.cgi%2fsprinklerforum-firesprinkler.org&c=E,1,e8K-9mSmxazOwuTGbZs7rQ06yU5INpFRBhv674r5Hy7_GGWKBo-7JU-gK_fLWFXuirVhlPf4_MrfA3tmi2e8jb7UVjbi9V1u6KEbQo21FWyrcTd_3B0g7XoS&typo=1> _______________________________________________ Sprinklerforum mailing list [email protected]<mailto:[email protected]> http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org<http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org> _______________________________________________ Sprinklerforum mailing list [email protected]<mailto:[email protected]> http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org<http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org> _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org
