I apologize now in case you consider my response a little harsh BUT
most of these questions are clearly answered by NFPA 14. The issue
of differing stair heights and how to address it is misunderstood by
many but the others are explicitly addressed. Since you are on the
liability hook and haven't done many standpipes, I suggest you study
study study. Not having much time since it (and other jobs) have to
get out the door only adds to the frustration.
Roland
On Aug 6, 2007, at 12:49 PM, Karen Purvis wrote:
For some reason standpipes just baffle me so I have a project that
I need
some help on. I have a six story apartment/dorm building with a drive
through (46') going through part of the first and second floor. The
riser is
on the first floor on the right side of the drive through. I have a
two
stairs going 1st-6th floor on the left and beside drive through,
stair going
1st-3rd on right of drive through and stair going 1st-5th at right
end.
Looking at NFPA 14
1. Do I need a standpipe at each stair?
2. I plan on using a manual dry pipe. Do I still need to calculate
a minimal
flow rate according to 7.10.1 or because it's manual there is no
flow rate?
3. Question 2 also applies to pressure.
4. According to 7.3.2 (5) I have to have a connection at highest
access to
roof. There is no access to roof. Do I still put a connection on
the roof?
5. Do these standpipes have to be connected?
Karen Purvis
Designer
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