We need to provide sprinkler protection below the seating area of a hockey rink.
The frame for each seat is 2'-10" wide, and 2'-0" high, and slopes down towards the ice rink. The floor area covered varies depending upon the location and ranges from 5-ft to 15-ft.
Our designer has shown sidewall sprinklers with the deflector parallel with the slope, at the high point of the underside of the bowl. The problem is the deflector needs to be more than 2'-0" below the frame in order to not be obstructed by the seating risers below.
Obviously there are no sidewall sprinklers approved for this arrangement.
If we use uprights instead of sidewalls, these will also need to be more than 2'-0" below the framing and I don't see this meeting the requirements of obstructed construction (thus allowing us to be 22-inches down to the deflector).
Is there something in the code that will allow us to cover this area with upright sprinkerls, 22-inches below the framing, with deflectors parallel to the slope?
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