I came across a "unique" situation, for me at least, today. We have a set of architectural plans that has TJI construction with gyp board attached to metal channels attached to the underside of the TJI. That is what we typically see. However, we also typically see at least one layer (but typically filled) of insulation at the bottom of the joist space. This allows the space to have sprinklers eliminated per NFPA 13 (2013): 8.15.1.2.6. We have to do the increased design area but at least, no sprinklers in the concealed space.
Well, this architect has stated that they are indicating the floor / ceiling assemblies to not have insulation and that is how it is going to be built. Yes, we are dealing with "one of those types." So, since this no longer meets 8.15.1.2.6 and I can't find another exemption it appears that sprinklers would be required in every pocket of the TJI structure. And, since it is flat and <36" deep then we would need the specially listed sprinklers. Am I way off target here, or is this how it would really be? We have talked to the GC and they are going to put in the single layer of batt insulation so we are in compliance with 8.15.1.2.6. It just seemed strange that there wouldn't be some other exception to eliminate sprinklers in that space. Travis Mack, SET MFP Design, LLC 3356 E Vallejo Ct Gilbert, AZ 85298 480-505-9271 fax: 866-430-6107 <mailto:email:[email protected]> email:[email protected] <https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.mfpdesi gn.com%2F&data=02%7C01%7C%7C1121d49f9e6b4cf248f108d4df580e77%7C14e5497c16da4 2e69ffa77d19bafe511%7C0%7C0%7C636379016677342180&sdata=HJ8OA4xyeHAoxXNz5mu%2 FYfycgtd5nsFrrpvzulZiNkQ%3D&reserved=0> http://www.mfpdesign.com <https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.facebo ok.com%2Fpages%2FMFP-Design-LLC%2F92218417692&data=02%7C01%7C%7C1121d49f9e6b 4cf248f108d4df580e77%7C14e5497c16da42e69ffa77d19bafe511%7C0%7C0%7C6363790166 77342180&sdata=H%2BwdcgK8DLGBcNoqJEvUrzsXngySwkX56Vgf9gM9EGk%3D&reserved=0> https://www.facebook.com/pages/MFP-Design-LLC/92218417692 Send large files to us via: <https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.highta il.com%2Fu%2FMFPDesign&data=02%7C01%7C%7C1121d49f9e6b4cf248f108d4df580e77%7C 14e5497c16da42e69ffa77d19bafe511%7C0%7C0%7C636379016677342180&sdata=eGdMZGu2 wXhUupGwgGTrqF3b54OP5%2BAZvlHhABSexWY%3D&reserved=0> https://www.hightail.com/u/MFPDesign LinkedIn: <https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.linked in.com%2Fin%2Ftravismack&data=02%7C01%7C%7C1121d49f9e6b4cf248f108d4df580e77% 7C14e5497c16da42e69ffa77d19bafe511%7C0%7C0%7C636379016677342180&sdata=tT5E7L sZjSmyreKi4gDCa70EWN%2BZodi%2FhbeCbHNRijI%3D&reserved=0> https://www.linkedin.com/in/travismack "The bitterness of poor quality remains long after the sweetness of low price is forgotten."
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