Looking to take my "napkin" sketches to the next level. I have read conflicting views on how to dimension timber frame plans. Dimensioning to the center point of the columns makes the most sense, but it results in all other measurements ending in fractions. (no nice 10ft x 12ft rooms when dimensioning to column centers...)

What is the accepted standard? (if there is such a thing?) What will be less confusing to contractors, etc?
Thank you.