IBC 903.3.1.3 permits 13D systems in one- and two-family dwellings. The definition of a dwelling (IBC page 14) is a building that contains one or two dwelling units. Unless you have a building separation wall in there somewhere it looks like the 13D approach would be prohibited by 2006 IBC. I don't think the floor would count as this separation. 13R systems are installed in "buildings of Group R". You seem to be dealing with a building of Group R with four dwelling units, not a dwelling with a maximum of two dwelling units. Therefore R not D.
Just my reading, others may differ. Bill Brooks William N. Brooks, P.E. Brooks Fire Protection Engineering Inc. 372 Wilett Drive Severna Park, MD 21146 410-544-3620 Phone 410-544-3032 FAX 412-400-6528 Cell -------- Original Message -------- Subject: Re: 13R system with individual risers calc to 13D? From: Roland Huggins <[EMAIL PROTECTED]> Date: Tue, November 18, 2008 6:21 pm To: [email protected] What does the IBC say? If there were townhouses (not since units divided per floor), then a 13D could be used with minimal rated separation per the IRC. The code drives the allowed type of system, not how small you make each individual system. Make sure the tamper switches are electrically monitored so it is known when one of the risers in the middle of the building is shut-down. Roland On Nov 18, 2008, at 11:26 AM, IPA wrote: > I have a residential complex consisting of two story units with two > individual units per floor. Obviously this would fall under 13R > however in > this case the owner wants each unit to have it's own seperate riser > control, > it's own underground feed etc... each unit is 100% independant from > the > others. In this case could this system be calculated to 13D criteria > (2 head > calc) seeing how each system is serving only one family's unit? What > do you > think? > > Thanks, > _______________________________________________ > Sprinklerforum mailing list > http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum > For Technical Assistance, send an email to: [EMAIL PROTECTED] > > To Unsubscribe, send an email to:[EMAIL PROTECTED] > (Put the word unsubscribe in the subject field) > _______________________________________________ Sprinklerforum mailing list http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum For Technical Assistance, send an email to: [EMAIL PROTECTED] To Unsubscribe, send an email to:[EMAIL PROTECTED] (Put the word unsubscribe in the subject field) _______________________________________________ Sprinklerforum mailing list http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum For Technical Assistance, send an email to: [EMAIL PROTECTED] To Unsubscribe, send an email to:[EMAIL PROTECTED] (Put the word unsubscribe in the subject field)
