All, thanks for the feedback. I will have floor drains under each of the three bays. Not too concerned about the slope of the floor affecting any work I do.
I'm building a house in the mountains (8400') in Montana and the whole house will have radiant heat. The builder also suggested extending the radiant to the garage because the cost would be insignificant compared to the overall build. The garage will be 1000 sq ft, 2 bays for the vehicles and...