frv thats exactly my point. We've always assumed the plate helps and does something it just seems weird that adding a stiffener would then mean you start to ignore the plate.
Sorry to be a pest rb1957 but what do you mean by "the shear flows to see the peak shear stress in the web"? I've always been told shear = P/A (and i've always used CSA) so I'm getting rather confused now that it appears that its not that.
Sorry rb1957 I'll try again
If I am checking a deck plate, treat it as a beam and calc the bending stress based on the BM and shear stress using the sectional area then in many instances the decks are fine. What we are getting told is if we have the situation where we have to fit a stiffener...
At my work we check decks and the stiffeners we fit under them. Up til now we've tended to use the area of the section as the shear area. We've been picked up on this and have hit a bit of a headache.
When you look at for example an I beam you take the shear area of the flange ignoring the...