On Thursday, 28 November 2019 18:33:10 UTC, The Marquis Saint Evremonde wrote:

Of course the OP must also accommodate those who have no limbs and are
blind and deaf. So, rather than a stair, he must install a lift with a
fitted gurney, permanently staffed by a medically qualified attendant.

Nah, you can use a jcb bucket hinged onto the door cill.


NT