Harbringer, thank you for the reply. If you know about wind loads on building's that's better than me;-)
So, are you thinking that Case 3, on my structure, would ignore roof loading (or a least the vertical component of the roof load)?
We're engineers right? I do it because I enjoy it:-) It is unclear that I need a stamp on this pergola. My town's building department told me they'd accept my analysis as an owner/builder, but they would review it thoroughly.
I'm not a structural engineer looking at buildings every day so...
I checked the code and AISC 360 Appendix A only requires 2nd order deformation effects "as appropriate" to the structure... so not necessary here I don't think. That means that I could look at combinations of linear elastic solutions, which is probably the direction that I'll head (unless...
In a structure like this the highest stresses will be in the welds at the top of the vertical posts, or in the welds where the roof's arc-shaped beams meet their support. Stress is not a simple scalar that can be extracted at the high stress locations for each load case, and squared and summed...
PhamENG is exactly correct when he said " I think he's wondering what roof pressures to apply concurrently with the wall pressures."
I guess that I should be more specific on what I'm trying to do. I'm designing a pergola for my back yard (pictured below). I'm a structural analyst in the...
So... do you break the roof into sections and apply this process? (Such that the sum of loads is evaluated for each location on the roof)?
I have to be honest, this is my first time through the code and its not immediately obvious that this figure is even talking about roof loads.
The following question regarding wind load combinations has come up a couple of times before on this forum, but I haven't found a complete answer. Reference the figure below.
Question = How do you handle the summation of loads on the roof?
A quick recap: Previous posts point out that...
