Our experience with both "Remote FDC's" and "Horizontal Dry Manual
Standpipes" for exterior protection and fire Dept. use, say's that deeper is
usually better as long as your above the water table. I would suggest that a
minimum of 3'-0" bury depth to protect from "Mechanical Damage"
If your in a warm climate where freezing is not an issue, do 3ft and your
line should never be damaged. (In freezing climates remember that the ground
around the pipe may be frozen solid down to the frost line depth. If your
pipe is in the frost layer, ice may form and restrict flow, when water is
introduced into the system. )
Thom McMahon
Firetech, Inc.
2560 Copper Ridge Dr
Steamboat Springs, CO 80488-2136
Tel: 970-879-7952
Fax: 970-879-7926
----- Original Message -----
From: "Randy Knutson" <[EMAIL PROTECTED]>
To: <[email protected]>
Sent: Friday, January 04, 2008 2:44 PM
Subject: Buried FDC Line Depth of Cover
I have a project with a remote FDC. The check valve is in the riser room.
There is a vault with an auto ball drip and drain gravel for the FDC line.
Since it's a dry line, does it have to meet the Depth of cover
requirements
from NFPA13 2002ed. Section 10.4?
Thanks,
Randy Knutson
Shilo Automatic Sprinkler, Inc.
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