Slender web in I beam E7-16
Slender web in I beam E7-16
(OP)
I have looked but cannot find any definitive answers to queries on calc of Qa. This earlier thread references the matter;
thread507-130866: X-bracing connection bolted vs welded
For the case of an I beam with compact flanges but slender web the calculation of Aeff/A, where A= total section area, seems only to make sense if Aeff = Aflange1 + Aflange2 + effective web area.
The AISC definition of Aeff implies (to me) that it comprises only those elements for which be is calculated, i.e. stiffened elements which for an I shape would only be the web, in which case Qa could be a small number (Aeff(web only)/A) which would have a disproportionate effect if the flanges were large.
Can anyone clarify this?
thanks
Graham
thread507-130866: X-bracing connection bolted vs welded
For the case of an I beam with compact flanges but slender web the calculation of Aeff/A, where A= total section area, seems only to make sense if Aeff = Aflange1 + Aflange2 + effective web area.
The AISC definition of Aeff implies (to me) that it comprises only those elements for which be is calculated, i.e. stiffened elements which for an I shape would only be the web, in which case Qa could be a small number (Aeff(web only)/A) which would have a disproportionate effect if the flanges were large.
Can anyone clarify this?
thanks
Graham






RE: Slender web in I beam E7-16
summation of the effective areas of the cross section based on the reduced effective width, be, in^2 (mm^2)
Other thing is by the specifics of the connection you may get some further reduced capacity.
I am not entirely sure if I understand your question, please clarify if not.
RE: Slender web in I beam E7-16
ishvaaag, it is the philosphy of what constitutes 'the summation of effective areas...based on effective width, be ...' that I find vague as 'be' only applies to stiffened elements (in E7).
RE: Slender web in I beam E7-16
RE: Slender web in I beam E7-16
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RE: Slender web in I beam E7-16