August 9, 2016
Sounds like a case of "get the interpretation of the AHJ official." That's the next step here. Thanks.
June 16, 2015
My interpretation is different. This is an Assembly Occupancy Group A-5. Table 403.1 is used to determine the number of plumbing fixtures required for A-5. 2,000 is the occupant load used to determine plumbing fixture counts in my jurisdiction.
April 6, 2015
This is interesting question. I am referring to 2015 IPC sections (other editions are the same but section references might be slightly different).
For certain, the 800 seats plus whatever the stage areas generate for a number of people.
403.3.3 The path of travel distance can't be more than 500 feet from the most remote location where a person in the seats area and stage area starts from.
As for the 1200 sitting on the lawn, the lawn is not a structure and therefore the code doesn't require toilet facilities for the people in that area. However, as with any outdoor venue (parks, ballfields, fairgrounds etc.), you know people will be there and you know they will be needing toilet facilities. Most code officials usually want some accommodations for these areas during events just so there is not long unmanageable lines at the permanent facilities that you do need to provide. That might be just requiring that some porta-pottys be brought in for the events with lawn seating. Or, maybe in the big picture, a extra permanent WC or two would eliminate the code official concern and make porta-pottys unnecessary.
August 9, 2016
I'm designing an exterior amphitheater with a covered performance platform, 800 uncovered stadium seats, and lawn seating area for 1200. A-5 use group. Do I size the rest rooms for occupancy of 800 or 2,000? -- and how far away can the rest room building be from the seats? Thanks.
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