I found this paper on vortex shedding and pole structures. It's taken me a hole day just get to the model shapes and their forces. I'm still doing research to figure those out. (Have been having fun converting to metric to match the equations) and trying to match the equations to the output in...
I am a PE in a structural design firm. My post was more to see what was generally being done around the country. The Aquity Insurance Pole was most informative. Thank you very much.
I miss-spoke, there is a portion of Washington State's regulations covering the stamping of drawings. Some in state jurisdictions had suddenly required the wet signatures here (I think the building officials all went to a lecture). When it started hitting our office I had heard it was a code...
Well if it is the same manufacturer I can understand why it didn't work. I upsized all of the pole by 6" in diameter after he had turned in his supposed engineered pole. In general I'm not worried about the pole itself and after the comments I'm feeling better about the footing connection. My...
The wet stamp is an IBC requirement. Most of our drawings are electronically signed but some jurisdictions still want a wet stamp. We've been able to get around that with a wet stamped letter to the jurisdiction indicating that the drawings are in our control. Each jurisdiction has needed a...
There is a safety factor of 1.5 required for retaining walls in section 1807.2.3 of the IBC. This is not required by your wall since you are not retaining earth. In general, you wall has a 1.666 factor built into the wind and you have to take a .9 dead load factor to determine overturning. It's...
Thanks everyone. Yes there are some threads covering poles but most of them are for insignificant size poles and the ones that are for larger poles do not cover the foundation details. The pole is stepped with the base being 42" diameter x 1/5" thick steel and steps about every 40'. The...
I'm designing a 180' flag pole with a 40’x80’ flag. I used NAAMM's FP1001-07 but updated loads using ASCE 7-10. My question has to do with the footing and embedding the pole. The pole base is a 42" diameter steel pipe sitting in a 52" corrugated sleeve. The manufacturer/installer insists that...
ASCE7-05 has the same table and has not referenced anything else. It has to be assumed that the values in the table are for h/D less than or equal to 1 and greater than or equal to 25.
Larry
Typically no, treated wood wouldn't be required. I don't think I've ever even seen a wood truss that was treated, at least not in the state of Washington. Since it's an open structure, I would use treated posts.
Larry
