Okay thanks for this additional feedback. I can tell that it's a grey area that can be perceived different ways. But I think I have an idea of what's involved now.
Thanks!
Yes, I have reviewed 13.3.1.4. It says dynamic analyses are allowed for the building and/or the floor, but you then take the acceleration that was determined from that RSA model and plug it into Eqn 13.3-4 to determine the seismic force for the nonstructural component that resides on that...
Okay, thank you for that feedback again. The main debate I'm having with a colleague is whether ASCE 7-16, Chapter 13 allows an engineer to analyze a nonstructural component by directly applying a response spectrum to said component in the modeling software. He believe it's permissible...
Okay, that makes sense so far. In the case you generate the "in-structure response spectrum," would you use Eqn 13.3-4 to generate the seismic force for the component? Or can you directly apply the spectrum to the nonstructural component?
When designing nonstructural components, is there ever a case where a response spectrum can be applied directly to the nonstructural components in modeling software? Let me elaborate...
From my understanding of Chapter 13 of ASCE 7-16, to do an RSA approach, you have to run the RSA on the...
Yes, your understanding of the purpose is correct. I found the following image in the back of ASCE 7-16 that is a good example of my situation.
Your idea sounds reasonable. But my understanding is that 13.3 and 13.4 are for the mounted components. What about the skid itself? I think it...
I'm on a team of mechanical engineers and we are a little bit out of our wheelhouse. We have taken training for ASCE 7-16 seismic design, so we know the basics. We have been tasked with designing a process piping skid to ASCE 7-16 seismic criteria. We are designing the skid, as well as the...
Thank you for this helpful feedback. Do you think the other translations and rotations would need to be considered for a nonbuilding structure (e.g., pressure vessel)?
I'm reviewing ASCE 7-16 §12.9.1.1 about extracting enough modes for modal response spectrum method. I'm using the ANSYS software which reports mass participation for the three translational directions (UX, UY, UZ) as well as the three rotational directions (ROTX, ROTY, ROTZ). Does §12.9.1.1...
Folks, I'm a mechanical guy dabbling in some civil seismic stuff, meaning I'm out of my wheelhouse a little bit. I'm doing some seismic work with ASCE 7-16. I was told there is a USGS website to get Ss and S1 values for locations around the USA. What is the web address for that site?
Folks, I found it. It was a scavenger hunt. National Emergency Training Center (NETC) showed it available in their online library. When I called NETC, they told me to call my local library and have them request it from NETC through the inter-library loan program. I called my local library...
Folks, as I understand, the ICC publishes the Building Safety Journal. I'm looking for an old article that pertains to ASCE 7:
Bachman, R. and Dowty, S. “Nonstructural Components or Nonbuilding Structures?”, Building Safety Journal, April-May, 2008
I searched all over the web but could not...
Is there some basis to justify 33Hz as the cutoff? Some theoretical data? Empirical data? I understand a building will likely no longer respond as the frequency gets higher. But what person/organization ever decided 33Hz was that magical number?
***Repost from my earlier thread in Mechanical Engineering. My work actually relates to mechanical engineering, but it didn't occur to me that "structural" would be the more appropriate subforum for this question. My apologies.***
Folks, in many seismic discussions I have had over the years...
Thank you for this feedback. Please help me understand your chart. It appears that most of the interesting activity occurs above 0.030s. Is that why you referred to it as an arbitrary cutoff? Did I understand correctly?
Folks, in many seismic discussions I have had over the years, I have frequently heard reference to 33Hz. In terms of seismic, what is the significance of that frequency? Is there some geological reason that seismic vibrations around/above/below that frequency may not matter? Is that a magical...
I personally would love to be involved. However, I have noticed that the employer schedules and budgets in the commercial world generally do not support engineers' involvement in these types of activities. These "extracurricular" activities do not directly support company revenue. So it's...
