Curve.Offset direction is inconsistent

The original square was (4) curves created from the floor sketch. These were then used to created (4) beams at the floor edge. I was able to correct the issue by adding a negative value range in the number slider. I do not understand how or why this worked, but by making my range -1 through 1, it corrected the offset direction issue I was having. :person_shrugging: Thank you for your help!