Thanks Steve. Yeah, not talking about storage closet under the stairs but under the angled stair risers that would be open and part of the room. 13R does a fair job of addressing this. 13D does not. My first thought would be to address this as an obstruction but 13R acknowledges in the appendix that "Sprinklers are not required to be spaced along the angled portion underneath stair risers in dwelling units. Stairways have a very small fuel load as they are used primarily for egress. Sprinklers spaced along the slope will likely not operate unless they are directly over a fire. Sprinklers installed at the landings on either end of the stair riser will provide the protection desired by this standard." This makes sense when its a stairWELL but in my situation the underside of the stairs are open to a living room - at least the underside is.
<http://www.avg.com/email-signature?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail> Virus-free.www.avg.com <http://www.avg.com/email-signature?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail> <#DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2> On Wed, Jun 26, 2024 at 3:07 PM Steve Leyton <[email protected]> wrote: > If it’s a closet, I would protect it. If it’s an open stairwell in a > sprinklered compartment, I would not. In a 13D design, I would not concern > myself with whether the stair is surfaced with non-combustible sheathing or > not, but that’s MY opinion only. > > > > Steve L. > > > > *From:* Anthony Johnson <[email protected]> > *Sent:* Wednesday, June 26, 2024 2:53 PM > *To:* Discussion list on issues relating to automatic fire sprinklers < > [email protected]> > *Subject:* [Sprinklerforum] Interior Stairwells 13R vs 13D > > > > 13R 2019 states "6.6.9.2 Sprinklers shall not be required underneath stair > risers in dwelling units where the walls and ceilings are surfaced with > noncombustible or limited-combustible finishes." > > > > I do not see a similar statute in 13D. Is there a reason for this? What is > your practice for addressing sprinklers under the stair risers in 13D > systems? > > > > Thanks, > > Anthony > > _________________________________________________________ > SprinklerForum mailing list: > https://lists.firesprinkler.org/list/sprinklerforum.lists.firesprinkler.org > To unsubscribe send an email to > [email protected] >
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