HerHusband writes:

Many building departments (mine included) have reference documents online
that tell you the most common building situations (joist spans, wall
construction, foundation details, etc.). Mine even has free plans for pole
barns and other basic structures.

You could always call the building department and ask basic questions. You
may not get an inspector, but I found the receptionists could usually
answer simple questions.

Except for the associated permit fees, I had nothing but positive
experiences with our building department.

As for fees, how to you expect them to pay for those "free" plans and
the answers to "basic questions"?