#Code requirements for seismic bracing code#

It surely does not say all mech & elect components. The interpretation is somewhat vague in ASCE 7-10 exemptions. What do I do if I discover the job in Auburn needs seismic? Give my deer in the headlights look I guess.ДЄnother thing I would like to know is what about a rigid metal frame and bent metal purlin building the sort I deal with a lot? I guess in areas around the rigid frames it is easy enough even I could do it but what about end walls that do not have expansion frames? All you got is light gauge metal, what do you do here? Frustrating because everything I've seen shows it with concrete structures and that makes it easy.Д«ut to start out can anyone point me to a detailed map that will show me where zones A, B, C and so on actually are? RE: Seismic sway bracing and branch line restraints in SDC A & B per NFPA 13 (2013) LicensedToPEe (Structural) Question: Where can I find a good map that shows areas of seismic design categories? A bit ago I bid a job in Auburn, Alabama and and looking at it it might require seismic but I am not sure. I guess I could say the areas I've worked in aren't exactly those areas that rock and roll. As far as working south nearly everything I have done has been south of Macon, Georgia between the coast and midway across Alabama and a tad in northern Florida. If I had to guess more than 95% of the work I have done Ohio, Michigan, western Pennsylvaniar, a little bit in Kentucky just south of Cincinnati and a couple large jobs I did in Bowling Green, Kentucky. If there is anywhere I am really weak it's when it comes to seismic design because in over 40 years only had to do it once and that was back in the late 1980's. RE: Seismic sway bracing and branch line restraints in SDC A & B per NFPA 13 (2013) TravisMack (Mechanical) 6 Aug 16 00:18 In other words, even SDC A and B would need to be designed for a minimum of Fp = Cp*Ww where Cp = 0.35. This would imply that any area of the US, irrespective of the SDC (A or B and higher) would require seismic bracing for sprinklers since there are no areas where Ss=0 on the USGS maps. It lists values of Cp for areas with Ss less than 0.33 with Cp = 0.35 (i.e., 35% of water filled pipe weight is the horizontal seismic force). It is using a Cp factor which in turn is tied into the short period response parameter Ss. Again, no specific requirements for sway braces and/or branch line restraints for any SDC.Д¤.) NFPA 13 (2013) Section 9.3.5.9 provides a conservative yet simplified approach to calculate the horizontal seismic loads for the braces. Further, 1613.1 Scope 'Every structure, and portion thereof, including nonstructural components that are permanently attached to structures and their supports and attachments, shall be designed and constructed to resist the effects of earthquake motions in accordance with ASCE 7'.

#Code requirements for seismic bracing code#

International Building Code (IBC), i.e., the 'Code' with pertaining legal requirements, in Section 903.3.1.1 states: 'Where the provisions of this code require that a building or portion thereof be equipped throughout with an automatic sprinkler system in accordance with this section, sprinklers shall be installed throughout in accordance with NFPA 13.' There is no other mention of seismic bracing for sprinklers in IBC 2012. Who sets this requirement? IBC 2012 does not, it creates a circular reference back to ASCE 7 which goes to NFPA 13.ДЈ.) NFPA 13 (2013) is a Standard, not a legal document (Code). NFPA 13 Section 9.3.1.1 states 'Where water-based fire protection systems are required to be protected against damage from earthquakes,the requirements of Section 9.3 shall apply. So far so good!Дў.) NFPA 13 (2013) does not make any distinction whatsoever about seismic design categories (SDC). Mechanical & Electrical components in Seismic Design Category B' is not applicable for sprinklers since Section 13.6.8.2 of ASCE 7-10 references NFPA 13 as deemed to meet the requirements of force & displacements of ASCE 7. 13.1.3 and therefore it does NOT fall under Exemptions per ASCE 7-10 13.1.4, 'Item 4. What is the current interpretation of the requirements of seismic sway bracing and branch line restraints for sprinkler systems? Please consider the following points:ДЎ.) ASCE 7-10 designates sprinklers as life-safety purpose after earthquake in Sect. I'm a licensed structural engineer (SE) working with a fire protection engineer (PE) in a project located in TX (that's actually irrelevant) in Seismic Design Category (SDC) 'B'. I wanted to get back to this old thread now that it is 2016, 3 yrs after NFPA 13 (2013 print) has been out. Thread184-335672: Seismic requirements for catagory B?