Stellar recommends a minimum of 14 x 14 for the door and a barn at least 40 x 60 x 16 for just trailer storage.
Pole barn door height.
The average pickup truck or suv can fit inside an 8 door.
If you re building a pole barn garage the average garage door height is 7 to 8 tall.
Pole buildings are typically built in 2 foot increments for the wall height i e.
Narrower doors can be made special but are more expensive than the 8 width.
If you need a 10 foot high opening you can know that 12 foot tall walls will work well for this.
When considering the maximum door height that will be feasible for your building the 2 foot rule is a safe one to follow as well.
In some cases usually 7 or 8 heights 20 width residential doors are available.
Residential doors are available in most heights to 18 wide.
10 12 14 etc.
If you want to store tractor and trailer go with a 40 x 80 x 16 pole barn.