Originally Posted by
Wendell Swedberg
Would it be fair to say that the foundations for residential and commercial structures or more or less built the same
More or less, yes ... if you are referring to one and two story commercial buildings of similar construction (i.e., wood frame or concrete block).
Get higher than 2-3 stories and the loads start changing, along with the types of construction and materials used.
Kind of like old houses in what are now business areas are now "commercial" structures (no longer "residential" structures, even though they were originally constructed as such).