I’ve followed your threads on your new building with interest but haven’t replied, I am more of a lurker type. But, I have almost the exact Morton building you are contemplating, just a little bigger (75’ x 125’) built in 2010. I love it, there were less expensive options, but they didn’t come with the warranty, engineering, and reputation of Morton so we spent the extra $$. The big sliding doors alone work so much better than what I see in locally built farm buildings as to be worth the extra cost when I’m holding a spooky three year old pulling a door closed in a high wind : - ) We also got a quote from Lester and it was more than Morton, actually. A local guy was quite a bit less. Oh wait, that wasn’t the question, was it?
You shouldn’t have any issue with the exhaust fans raising dust, if you have sufficient dust control that you can ride without a problem. What kind of footing are you planning to use?
I have washed concrete sand (ASTM-35, I think was the rating?) and even though it’s washed, it was dusty without regular watering. If I let it dry out I had very fine dust hanging in the air from riding. I watered it for a couple of years, but it took a lot of time and water, was always dry when I wanted to ride (full time job in town), so I’ve been using MAG for the past three or four years.
But, even when it was dusty, the fans alone wouldn’t raise the dust.
