Access Control: Where Do You Use Mantraps?

I am gathering materials, information, and insights on a post about mantraps. Wiki describes them as:

"In modern physical security protocols, a man trap refers to a small space having two sets of interlocking doors, such that the first set of doors must close before the second set opens.[4] They are also known as air locks in the security industry."

[UPDATE: Here is our mantraps tutorial.]

A few questions for you:

  • Which is the largest (number of doors) mantrap application you've seen or worked on? 2 doors? 4 doors? 100 doors?
  • Can mantrapped doors be emergency egress doors? (Leaving the secured side.)
  • What sort of code oversight dictated design? Sources?
  • Did you use special 'mantrap controllers', or did you configure an electronic access control platform to provide the function?

I appreciate your feedback in advance!

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