Concentrated Load on Metal Deck
Concentrated Load on Metal Deck
(OP)
Is there a procedure to determine the effective width of a roof deck subject to point load (say a ballast tray for example)?
I thought I had found one at one time, but can't seem to find what I was looking for.
Thanks!
I thought I had found one at one time, but can't seem to find what I was looking for.
Thanks!






RE: Concentrated Load on Metal Deck
RE: Concentrated Load on Metal Deck
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.
RE: Concentrated Load on Metal Deck
You are referring to modifying the I.x and S.x values, etc. for each direction?
I was thinking that you would mostly likely get the width of the piece of deck (I think typically 36"). hmm....
EIT
www.HowToEngineer.com
RE: Concentrated Load on Metal Deck
Yesir. If you do this, I want to see the results.
I'm looking up at exposed deck as I type. If you only loaded one flute at the edge of a 3' sheet on a 5' span, I very much doubt that you'd get meaningful participation from the flute on the other side of the 3' sheet. I don't know how to evaluate that, however, short of conducting the modelling exercise.
The shear connections between sheets seem to always occur at or near vertical flute legs. As such, I feel that shear could be transferred across multiple sheets nearly as well as it could be transferred within 3' sheets. Following this through, that suggests that you may not be limited to just the loaded sheet. That's just my gut feel however. If this was my baby, I'd be tempted to just use the loaded flutes.
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.
RE: Concentrated Load on Metal Deck
I'll let you know if it goes there.
EIT
www.HowToEngineer.com
RE: Concentrated Load on Metal Deck
Richard L. Flower, P. E., LEED Green Associate
Senior Structural Engineer
Complere Engineering Group, Inc.