I have a structural question I’m trying to understand and could use some help please. When trying to find a max moment for a beam the given eq is Pab/l. In the NCEES HB it states: P=kips, a, b, and l = inches. But in multiple practice problems that isn’t how you solve it. Solutions use lbs and feet. Many problems seem to mix this up and I understand units need to be the same when solving but following the HB doesn’t appear to provide correct solutions. Can anyone clarify? Thx for any advice structural is my weakest area for sure .