Ben et al, Seismic needs to be approached as part of the building package. It is important to know what they are using to protect the building (e.g. ASCE 7) so that the system works with the structure. It would also be important to tie the seismic coefficient (CP) from NFPA 13 to specific editions. As Ken noted, the newest formula relates the seismic coefficient to the SDS; the information that goes into that equation is from the ASCE 7-22 edition. If the building is being constructed under ASCE 7-16, I would recommend using the information from NFPA 13, 2019 edition that still correlates to SS.
Now, back to the original question of where to locate the information. The source for this would come from the building code or authority having jurisdiction. You referenced FM 2-1, if this is an FM project, FM will be able to guide you to the source acceptable to them. Otherwise, the local authority is likely the best resource. For example, Mexico writes values into their building code to be used. Unfortunately, I do not have specific details for Guatemala. You may be able to reach out to someone involved with LATAM ( https://latampci.com/en/background/), which is an organization focused on fire protection and fire sprinkler systems across Latin America, who can provide more specific information for Guatemala. Thanks, Victoria ***************************************** *Victoria B. Valentine, P.E., FSFPE* valent...@firesprinkler.org (240) 813-4373 American Fire Sprinkler Association 1410 East Renner Road, Suite 150 Richardson, TX 75082 On Wed, May 1, 2024 at 12:18 PM Steve Leyton <st...@protectiondesign.com> wrote: > This piqued my interest, so I did a quick search with a couple of > different phrases and I found… nothing. However, I did learn that since > 1976 Guatemala has had several major earthquakes ranging from M6.8-7.5, so > it’s ACTIVE. They have several major faults that get pressed on both the > Pacific and Caribbean sides, 3 active volcanos and seems like it’s > generally very nasty, seismically speaking. > > > > Absent known/published force factor values, if I was pressed I would look > to where we’ve historically had similar quakes (i.e. 7.0+) and the two > regions I’d benchmark are Prince William Sound, Alaska and the San > Francisco Bay area. We actually had a 7.2 about 2 hours east of San Diego > in 2010 (Calexico) but that region isn’t rated as high as others. I think > using the highest value you can find from USGS is a solid Plan B. > > > > My opinion only, > > Steve L. > > > > *From:* Ben Young <derblitzkrie...@gmail.com> > *Sent:* Wednesday, May 01, 2024 9:04 AM > *To:* 321 via Sprinklerforum <sprinklerforum@lists.firesprinkler.org> > *Subject:* [Sprinklerforum] Seismic data outside the US > > > > Does anyone know where I can find seismic data, specifically for > Guatemala? > > > > I found FM Global 2-1 and its maps give you the 50 year zone, which gives > Sd1 and Sds, but I need Ss for doing the seismic braces. > > > > Don't know how to get from Sd1 and Sds to Ss though, if that's even > possible. > > > > Any pointers in the right direction would be appreciated. > > > > Thanks, > > > > Benjamin Young > > _________________________________________________________ > SprinklerForum mailing list: > https://lists.firesprinkler.org/list/sprinklerforum.lists.firesprinkler.org > To unsubscribe send an email to > sprinklerforum-le...@lists.firesprinkler.org >
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