I had a 60'x40'x14' pole barn built. It has a 20'x14' sliding door on one side of the 40' front, a walk-in door beside the sliding door. If you install overhead doors, make sure you allow for its required clearances.
It has a 4" concrete-fiber floor with rebar and wire reinforcement. Yes it has some small spider cracks, If anyone tells you they can pour a concrete floor that will never crack,watch for their nose to grow; just ask any professional concrete pouring company. Rebar and wire will not stop spiderweb cracks, it will prevent the cracks from widening or creating an unlevel surface.
I do wish I would have placed a moisture barrier atop the gravel-bed then poured the concrete. Without the barrier my concrete floor shows moisture when temps go from cold to warm quickly, but you shouldn't have that problem where you live.
I didn't install a remote door opener, just because I'm cheap and manually sliding the door may be accomplished with one finger once it is moving.
I'm planning to install a chain-operated vent in the back gable-end for ventilation. When the big door is open, the vent and door should provide all the air movement I require to make it comfortable for working inside.
I park our MH on the side with the sliding door, the other side is for my "stuff"; including my 1932 Chevrolet, my pickup and workshop. I build a 20'x20' loft above that side of the building 8' above the floor for storage.
I used to have pics of everything about the garage, but lost them when my previous computer died.
This website may give you some ideas to include in your final building plans: https://www.ag.ndsu..../buildingplans/
Edited by RayIN, 05 January 2017 - 11:55 PM.
2000 Winnebago Ultimate Freedom 40JD,Spartan MM chassis, Cummins ISC 350; GS life member, USA retired
"As nightfall does not come at once, neither does oppression. In both instances there is a twilight where everything remains seemingly unchanged. And it is in such twilight that we all must be aware of change in the air - however slight - lest we become unwitting victims of darkness."___Supreme Court Justice William Douglas