Todd:

This prompts several questions:

1. Is the building sprinklered?

2. When you say hose "stations", do you mean Class II or Class I
connections?

3. Is this a high-rise?  If not, are you asking about hydraulics for
purposes of doing a proof calc' from the FDC or is someone requiring an
automatic water supply?

4. Does each separate riser have its own FDC?  

5. Who designed this multi-riser arrangement?  14 says that standpipes
are to be interconnected ...

Steve Leyton
PROTECTION DESIGN & CONSULTING


-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Todd
Williams - work
Sent: Tuesday, June 19, 2007 3:59 AM
To: [email protected]
Subject: standpipes not in stairs

I am working on a project where an old mill is being converted to 
condos. The building is 500 feet long and there is a central corridor 
with units on either side. We have been asked to install hose 
stations at three locations in the main corridor, fed from a separate 
standpipe from the basement. These will be no where near the
stairtowers.

Due to the location of the hose connections, there is no way that a 
hose connection on level 2 could ever be used for a fire on level 3. 
In the hydraulic calculations, do you still need to include 250 gpm 
from each of the top two outlets on the first standpipe?

Also, each standpipe is to be fed from a different riser, so the 
connection of the three would occur in the underground. Do you still 
need to calculate the demand that includes all three?

Todd G. Williams, PE
Fire Protection Design/Consulting
Stonington, Connecticut
860-535-2080
www.fpdc.com 

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