You can also run two risers. 


----- Original Message -----
From: AKS-Gmail-IMAP [mailto:[email protected]]
Sent: Tuesday, October 04, 2011 09:49 PM
To: [email protected] <[email protected]>
Subject: Re: Riser Location for combined stand pipe

Would you please provide the section number for each? I have never  
seen it and I have been checking for this for years and I would not be  
surprised if I have missed it. Related to this, the last time I looked  
IBC still says "connection for each floor" while 14 says "at the  
intermediate" landing which is one less connection per standpipe for  
many stairwell standpipes.

In answer to the first question, sometimes it is possible to put the  
control valve at the landing below the floor level, rise up through  
the next landing and then exit the stairwell enclosure into the  
ceiling cavity. This would happen below the next floor's control  
valve. This method is possible when the conditions are right and when  
the architect is motivated enough to make enough room in the stairwell  
for all the trappings at a mid landing.

Thanks,
Allan Seidel
St. Louis, MO

On Oct 4, 2011, at 6:16 PM, Steve Leyton wrote:

> Try the floor.landing.  Both current IBC and NFPA 14 cite floor  
> landing or
> smoke-proof vestibule as "preferred location".
>
> Steve Leyton
> Protection Design & Consulting
>
> Bob <[email protected]> wrote:
>
> Every time I have a combination stand pipe / system riser there is an
> awkward transition between the intermediate landing and the floor  
> above.
> What type of arrangements are others of you using to make this  
> transition
> smoother?  Any suggestions and direction is welcome.
>
> Thanks,
>
> Bob Knight, CET III
> 208-318-3057
> www.firebyknight.com
>
>
>
>
>
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