one of the staff proposed this solution.  wants to consider an exit stair enclosure as a horizontal exit.  provide adequate space inside to meet the refuge capacity area, provide egress doors as required, provide rated wall/door separation as required.  my first reaction was no, can't do that.  it is an exit enclosure.  but can't find anything in the code or manuals either way.

 

why do this?  in anticipation of your question, they want to do this to avoid making one of the elevators in a five story office building meet the accessible means of egress requirements.

 

appreciate your thoughts!

Original Post

Quite a novel idea and quite different concept to customary MoE components we are used to seeing.

MoE features are defined and categorized to be mutually exclusive in their configuration and purpose. While you could make a case for equivalency, all the features for configuration and purpose need to be reconciled and conflicts mitigated.

For example; in a customary horizontal exit the occupant load goes into an adjacent building space adding load to the exit access in that space. Using an exit stair enclosure precludes exit access as exit enclosure is further downstream component in the MoE system. 

There are quite a few combos to go through, have fun with the analysis and keep us posted on what develops.

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