So now that Musk is destined to become the de-facto rocket tycoon, what would be the best approach to constructing rotating torus habitats in LEO? Interplanetary commerce demands "boots in orbit", and that requires simulated gravity because let's face it, microgravity slowly destroys the human body from the inside.

Personally, I'd go for a modular approach, having a bunch of railroad car sized modules prefabricated on Earth and assembled in orbit

Also, if your interested, torus speed and gravity calculator:

>https://www.artificial-gravity.com/sw/SpinCalc/