I have seen mains routed over the roof in several instances. Some were
industrial, some were freezer storage buildings. We just always had
structural engineer verify everything.
Travis Mack, SET
MFP Design, LLC
2508 E Lodgepole Drive
Gilbert, AZ 85298
480-505-9271
fax: 866-430-6107
email:[email protected]
http://www.mfpdesign.com
https://www.facebook.com/pages/MFP-Design-LLC/92218417692
Send large files to us via: https://www.hightail.com/u/MFPDesign
On 2/18/2016 5:46 PM, Ed Vining wrote:
Frans, in the 1970's or 80's an unprotected fire protection main was
installed on the roof of the C&H Sugar Company at Crockett California. I
don't remember the size, but believe it was at least eight inch. The
lowest temperature I can find at that location is 28 degrees F. As far as
I know the pipe has never frozen. You could question them at:
-
*830 Loring Ave, Crockett, CA 94525*
- Phone number (510) 787-2121
On Thu, Feb 18, 2016 at 3:45 PM, Frans Stoop <[email protected]> wrote:
Dear colleagues,
A client has an existing alarm valve room in an open air courtyard of his
complex building, fully enclosed by parts of the building.
It may freeze in this coutry, sometimes upto -20 deg C (-4 deg F).
We are looking for a way to connect the valve room to the underground fire
water mains outside the perimeter of the building by way of a new DN300 (12
inch) header.
Passing through the building or its souterrain is very difficult or might
even be impossible.
(All rooms, including the souterrain are in full use and have access
limitations.)
Drilling a tunnel underneath the souterrain has been rejected because of
possible damage to the foundation and all the existing pipes and cables
that might lay under the building.
Client has come up with a proposal to route this 12 inch header over the
roof, meaning 14 m up along the outside wall, 17 m horizontal over the roof
and 14 m down again into the courtyard.
That above ground loop would be made in hot-dipped galvanized steel,
insulated and heat-traced.
What is your opinion about that solution?
And why?
Has this been done often?
Looking forward to your appreciated views.
Met vriendelijke groet/Kind regards,
Frans Stoop
Riskonet B.V.
Singel 540, 1017AZ, Amsterdam
T +31 6542 37 642
www.riskonet.com
[email protected]
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