I am setting up a new 20 x 60 meter dressage arena. For the borders I am using vinyl rails held by pyramidal rail supports. These supports, pictured below, extend 6 inches in front of the rails themselves.
Are the arena dimensions measured and set up to the bottoms of the rail supports, since they extend into the arena riding space, or is the arena dimension measured to the rail, regardless of the impingement of the rail supports into the riding space?
I am getting mixed answers from my experts at home, including riders, judges, and clinicians. Answers are (1) to the rails, of course, (2) to the bottoms of the supports, (3) take your pick, it really isn’t critical; it’s only a one foot difference, and (4) that’s never come up before, I don’t know…
What’s an arena builder to do?