Architectural steel mesh wind loads

[MacGruber22]

Anyone have information on determining wind pressure coefficients on products such as these:

http://www.gkdmetalfabrics.com/metalfabrics.html

"It is imperative Cunth doesn't get his hands on those codes."

 

[JedClampett]

This comes up every once in a while. You could get a copy of Idelchek or ASHRAE, find out the loss for the mesh in question, run the numbers, and come up with an answer. Or you could treat the mesh as a solid sheet, use ASCE 7 and conservatively figure the wind loads. You'll find the second method comes up with answers pretty close to the first and you don't have to do as much work. Plus if a sheet of visqueen blows onto the mesh, your analysis still applies.

 

[MacGruber22]

Yeah, tried a few searches but wasn't coming up with much. I already did my design using solid sheet, but was still curious about what is out there. By "Idelcheck" do you mean "Handbook of hydraulic resistance"?

I guess as a side note, I am sort of preparing for complaints about my footing sizes, as they have to underpin existing exterior walls. The two-story canopy frame covered in the metal fabric is mainly resisting wind load and could have much smaller footings otherwise. I guess we will see...

Thanks, Jed

"It is imperative Cunth doesn't get his hands on those codes."

 

[KootK]

I think that this is the latest version: Link. Search WIND + Perforated. That's the usual application.

I like to debate structural engineering theory -- a lot. If I challenge you on something, know that I'm doing so because I respect your opinion enough to either change it or adopt it.

 

[EZBuilding]

I've had a discussion with the technical department of a manufacturer for architectural perforated panel and they suggested that no reduction be taken based upon the openings due to the potential for "wind buffeting" across the holes. I recall using the full gross area for design and did not dig into the subject much more...

 

[JedClampett]

To answer the question, "Handbook of Hydraulic Resistance" sounds right. It's an accumulation of hydraulic losses for every configuration of pipe and valve you could think of.
I hear it kept Dr. Idelchek's graduate students quite busy writing it.

 

[MacGruber22]

Thanks for pointing me to the correct term, KootK. I called GKD fabrics but they were less than helpful.





"It is imperative Cunth doesn't get his hands on those codes."

 

[PicoStruc]

Where I live, we suppose that it's full of ice, so no wind pass through !