This is an existing project where the original contractor screwed up
and was thrown off the job. One of my regular clients took it and
asked me to help straighten it out.
There is no way presently to avoid running under the building. The
requirements of 6.2 are being applied.
The pump room cannot be directly accessed from the outside. If they
can get the pump in, they should be able to get it out as well. The
room, while tight, is adequate size. The local AHJ is aware of it and
has supposedly accepted the arrangement.
Drainage is another issue we are working on.
There is more, but not for this post
Todd
At 11:54 AM 8/18/2008, you wrote:
You've got a bunch of issues there.
Pipe under buildings: check NFPA 24, 10.6.1 PIPE SHALL NOT BE RUN
UNDER BUILDINGS.
There is some allowance when it can't be avoided as listed in 10.6.2.
Can the pump room be accessed directly from outside? Is there any
way to service or even remove the pump if necessary once the building is done?
Is there adequate drainage from the pump room to prevent it from
being flooded?
Craig L. Prahl, CET
Fire Protection Group
Mechanical Department
CH2MHILL
Lockwood Greene
1500 International Drive
PO Box 491, Spartanburg, SC 29304-0491
Direct - 864.599.4102
Fax - 864.599.8439
[EMAIL PROTECTED]
http://www.ch2m.com
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Todd
Williams - FPDC
Sent: Monday, August 18, 2008 11:14 AM
To: [email protected]
Subject: underground through building
I am working on a church building with no public water. They
proposal is to install a fire pump and 20,000 gallons of impounded
water. The building is built and the underground partially
installed, but is wrong and needs to be replaced. The fire pump room
is in the middle of the building and cannot be relocated. The
elevation of the bottom of the tank is going to be approximately 8
ft above the floor of the pump room. The site is on a side hill. The
basement is walkout at the far end of the building and the front of
the building is approximately grade level at first floor.
The proposal is to go underground in the pump room with the new 8"
line, over to a stairway by an outside wall, back up through the
slab, up approximately 4 ft and out through the foundation wall to
the tank. The pipe would then be run to the suction tank(s). By
raising up inside, the 350' +?- of trench will only need to be 6 ft
instead of 10-12.
Is this proposal an acceptable arrangement? I could not find
anything in NFPA 24 that says otherwise. Do I need or would any
additional valve be installed on the indoor section of pipe?
Todd G. Williams, PE
Fire Protection Design/Consulting
Stonington, Connecticut
www.fpdc.com
860.535.2080
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Todd G. Williams, PE
Fire Protection Design/Consulting
Stonington, Connecticut
www.fpdc.com
860.535.2080
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