AMC to Appendix S, S25.20(b) Exit as effective as a Type IV exit

An acceptable means of compliance with the requirement that the remaining exit resulting from an obstruction shall be as effective as a Type IV emergency exit (S25.20(b)(1) and (b)(2)), is to demonstrate that:

(1)the dimensions of the remaining exit opening are equivalent to or greater than those of a Type IV emergency exit; and

(2)the obstructing item does not protrude into the horizontally projected opening of the remaining exit. In the assessment of the effectiveness of the remaining exit, the requirements of CS 25.807(a)(4), CS 25.809(b) and CS 25.813(c)(1) should also be considered.

[Amdt 25/19]