In summary, a physical therapist needs to earn a graduate degree, typically a doctorate, and state licensure. Voluntary certification and continuing education could lead to advanced opportunities in the field.
Naturally, the width of the garage door depends almost entirely on the size of the cars housed within the structure; the bigger the car, the wider the door. Single Garage Door. Typically, a single garage door will have a width of 8, 9 or10 feet wide. The more compact the car, the smaller the width of the door should be. Of course, most new homes are built with doors that are around 10 feet wide simply because bigger SUV-style vehicles are more popular.
The opening for the garage door is exactly 8 foot, and is marked as such on the plans from 1968. A bit of googling reveals this was a standard garage door size back then, and I'm not the first person to think of widening an old garage door opening.