All I can say is that I thought I was smart, but figuring out EXACTLY where to put these things and have even spacing is a real pain.
Was pretty sure it was simple - take the length of the room and divide by three - of course that would be the logical way of doing it.
The back wall was pretty easy, found some 12" strips of OSB left over from the home depot cuts and I think i got this pretty close although it might look off kilter because of the corner columns, still haven't decided on how to handle the corners
Then I played around with some 16" MDF that was laying around from an old furniture carton (I knew they would come in useful! - been lugging these MDF boards around for 3 years now)
Problem was I kept mixing up On Center vs from edge to edge... net result - i spent way too long playing around with various size boards, laser levels, painters tape, etc trying to get it right.
Finally gave up and decided to come upstairs and check my latest sketchup - guess what - I got it wrong there too. The issue was I wasn't accounting for the centers of the end columns - I was either not counting them by doing on edge calculations, or I was calculating their full width - should've just calculated with 1/2 the width of each
SO.... just reworked it and this is what I came up with - will add arches and colors and such later
Can you tell the difference??