Appears completely correct to me. My experience with shear flow is in retrofits to wood beam members - which typically end up not feasible. An important thing to remember with shear flow is the results are in force/in not force per foot. This may be less of a problem in steel.
This is a link for good diagrams and examples (ASD)
>>> "Jeremy White" <jwhite@megr.com> 01/26/2009 2:08 PM >>>
Hmm. Right there in the front, huh.
My derivation is based on the fact that Q = ay
a = the area of the member above/below the point of interest
y = the distance to the CG of the area considered from the NA of the section
Replacing Q in the equation with "ay" you get Vay/I. I/y = S therefore Va/S, right? So with LRFD/ASD 13th you are to use Z in place of S. So you get Va/Z. Is this completely wrong or a loop hole?
- Jeremy
Quoting Anantha Narayan <deviationz@gmail.com>:
Look in Page 1-7 of AISC 13th Edition. It talks about the VQ/I shear equation albeit for W shape with cap channels
On Mon, Jan 26, 2009 at 2:16 PM, Paul Guthrie <PGuthrie@simivalley.org> wrote:
- Not sure, not in the index, could not locate shear flow anywhere, is there a specific section you know of?
- Seems more of a textbook mechanics type deal
PaulPaul Guthrie, PE
Building & Safety
City of Simi Valley
805.583.6885
>>> "Jeremy White" <jwhite@megr.com> 01/26/2009 10:45 AM >>>Is shear flow in the 13th edition of the steel manual still VQ/I ?- Jeremy