Is there any way to simulate the eccentricity due to connection of angle/WT section with gusset in STAAD?
Or do we need to perform additional check for member design due to this eccentricity manually?
Seth -
Is there a way to have STAAD.Pro check the eccentrically loaded WT section?
Using a rigid link does not solve this issue, as STAAD.Pro still does not consider connection eccentricity for the design of WT.
An article in the Engineering Journal (Second Quarter / 2010) titled "Tables for Eccentrically Loaded WT Shapes in Compression" discusses this topic. Capacities of eccentrically loaded WT shapes are typically in the range of 40-60% of concentrically loaded members (with some outside these limits).
Namit -
I have not figured out a way to have STAAD.Pro do a proper check for eccentrically loaded WTs. Here's what I typically do in practice - I set the interaction ratio limit to 0.4 for all eccentrically loaded WT sections and then take a closer look (manual check via tables in the article referenced above) if this ratio is exceeded for any members.
Opportunity for STAAD developers to implement a more user-friendly way to accomplish this (an additional parameter for eccentrically loaded WT with input = gusset thickness?).
Thanks,
Tadas
Thanks Tadas. That was quite helpful.