Size

Gee, did you not see post #2? Likely the best answer to your questions.
You've been around here long enough to know how threads can ramble.
I know that I personally don't have the answers you are looking for.

 

The trailer is 53' + wheelbase (distance between front and rear axle in inches).

53' dry van + 240WB Cascadia

53' + (240"/12)

53' + 20'

73'+/- 1-3'

73' verified feet plus 1-3 feet for the radius on the wheels we didn't measure.

Width is 110" on some trailers.

Aren't length equations listed in the Rand McNally?

 

I thought it was a rhetorical question because the answers are pretty easy and easy to find out in case you weren't a driver for more than a few days and don't know. Sorry.

 

My company uses mostly 53' spread axle flatbeds, and with my cascadia, counting the gap between the trailer and headache rack, I'm right at 76 feet. When parked in a row of trucks at a truckstop, with all of us having trailer tires against the curb, I'm commonly sticking a hood length out in the open. Our trailers are 102" wide.

 

almost every truck/trailer combo are different lengths. For one, you can order a semi tractor pretty much any length you'd like one, depending on your application. From a 105" daycab to a truck with a 140"+ sleeper on a 355"+ wheelbase.

 

Size does matter... Ask any women