I am looking for guidance on when it is appropriate to use a sidewall versus a pendent for a given situation. Obviously a sidewall is intended to be used on a wall. So my question is, When is a wall a wall? I have a situation where there is a steep wall/ceiling and it seems like it would be appropriate in this case to use a sidewall; but is it a wall? It would be beneficial to use the sidewall because the wall/ceiling in question is one side of a peaked skylight (one side being framed and drywalled with the other side being glass). The framed/drywalled side is steeper in slope than the glass side.
The motivation here is to not put a head under the glass portion of the skylight. I am just out of reach of being able to use an extended coverage pendent to reach the far wall an throw across and under the glass side of the peak. A sidewall would do it. (ceiling pocket and skylight exceptions do not apply. Skylight well is tall, step ceiling does not apply). 2006 IBC (which is essentially the code I am under) states in Chapter 21 that a wall is a vertical element with a length to thickness ratio greater than three. (it does not discuss the leniency in vertical) 2001 California Building Code (based on 1997 UBC) defines an exterior wall as a wall have a slope greater than 60 degrees with the horizontal plane ( I am no longer under this code). My wall/ceiling is just under 60 degrees from the horizontal plane. Long story short, and without getting into the specifics of the design too much, has anyone else wrestled with the wall versus ceiling question? and if so was there a different reference to go off of then the ones I stated above? At some point a ceiling becomes a wall when it slopes enough, I am just wandering when that happens. Does anyone have something other than the 60 degree guidance that is inferred from an older code? Thanks, Justin _______________________________________________ Sprinklerforum mailing list http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum For Technical Assistance, send an email to: [email protected] To Unsubscribe, send an email to:[email protected] (Put the word unsubscribe in the subject field)
