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Does anyone have successful experience with routing a fire sprinkler drain and/or inspector's test to a mop sink?
I have a client that has a 12" deep mop sink in a janitor's closet which the contractor is asking to as the discharge for an inspector's test. I suspect that with the pressures on the system (~120 psi) and a typical 1/2" orifice, that the flow will be roughly 60 gpm (=5.6 x sqrt (120)). We are recommending a 4" plumbing standpipe to accept the inspector's test if a drain riser can't be routed to the exterior separately. What are your thoughts? Posted anonymously by a member for discussion. Discuss this | Submit a Question | Subscribe
8 Comments
Raul Vasquez
4/3/2019 10:10:33 am
Nope. Water everywhere.
Rusty Scott
4/3/2019 10:22:09 am
When I was a sprinkler contractor we took auxiliary drains to the janitors sink just to help drain the system faster for maintenance. But never a test and drain for testing.
Vince
4/3/2019 10:30:23 am
Depending what state your located in here, in Nevada we are not allowed to dump into a drain at all. The AHJ's and Water District does not allow this for the chemicals that are used.
PETE
4/3/2019 10:32:07 am
That's only allowed in Mississippi. 4/3/2019 12:03:31 pm
As the previous comments are stating, this is not a good idea unless you want black mud all over the walls adjacent to the mop sink.
Mike
4/3/2019 01:36:56 pm
There are tables in the plumbing manuals indicating capacities of drain pipes under various conditions. I'd simply give them the flow and have the mechanical engineer design it to release liability from you.
Doug Funk
4/3/2019 08:09:29 pm
As an inspector, I would not recommend an inspectors test into a mop sink. It rarely turns out well. Leave a Reply. |
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