you jumped to a tangent (a good one but not a direct answer to the
question). It COULD provide an indirect answer of A FLOOR IS NOT A
SYSTEM by stating when you would do additional calc's OR it could mean
that other systems do not need a set of calc within the same building
that started this new thread.
Is the individual floor considered a system?
Roland
On Jan 13, 2011, at 9:12 AM, Thom wrote:
With the Multi floor jobs we've done, it became practical after
doing a calc
for the top floor (7th), to do a new calc for the 4th to minimize
the pipe
sizes. At that point no further pipe size advantage could be gained,
since
1st floor was all merchantile, and B1 and B2 were dis-simular parking
levels.
At some level it makes economic sense to re-calc, and the poorer
your supply
the earlier you'll see that impact. Every floor?? If the supply just
barely
makes the top floor, the elevation gain alone may make a new calc cost
effective. This is generally the case where Manual standpipes are
allowed.
(Less than 75') once the standpipe is pump fed, there need to be
several
floors before size change can make significant cost impacts (savings).
Thom
This has been our experience, your experience may differ.
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