Okay,

Unless you are a project engineer, none of that matters to you.  You don't have to know any of that.  The code and all AISC material especially the Code of Standard Practice places that responsibility soundly on the shoulders of the Project Engineer.  Then, it transfers to the detailer to make sure everything is called out properly on the detailed shop/erection drawings.  From there it gets re-submitted to the engineers for final approval to get your 'Approved for Construction' drawings. 

Things like 'Demand Critical', 'Cyclic', 'Static', etc are all in the sphere of an engineer with a state approved stamp of approval and the right insurance if something goes wrong.

For most of us, if your insurance found out you were calculating your own welds and other public safety issues they would drop you like a hot potato.  And a customer doesn't hire us to do those things.  If they do, they are trying to cut corners and I don't want their work anyway.  They will run like crazy when it all falls apart and YOU end up in court. 

Just my two tin pennies worth.


Have a Great  Day,  Brent