Section 27-513. Exits

Notwithstanding any other requirements of subchapters
  six and eight of this chapter, travel distance to an exit from any point
  within a tent or air-supported structure shall not  exceed  seventy-five
  feet.  Exit  doors in air-supported structures shall close automatically
  against normal operational pressures. Opening force at the edge of  such
  doors shall not exceed fifteen pounds, with the structure at operational
  pressure. Exit doors shall be located in frames so constructed that they
  will remain operative and support the weight of the structure in a state
  of total collapse.