×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

Exterior Mop Sink

Exterior Mop Sink

Exterior Mop Sink

(OP)
I am doing the site design for a gas station.  The Owner has requested that the mop sink for the building be just outside the back door.  The Architect is trying to push the design/detailing of the mop sink off on me since it is outside the building.  The Architect described it as a two-foot square area surrounded by a concrete curb with a drain in the center.  A standard hose bib on the side of the building would be the water source. I will have to connect it to the sanitary lateral since it will have wash water and cleaning chemicals drained into it.

Has anyone ever designed something like this or seen  details for one?  Do I need a trap on the drain?  Would the plumbing code apply to this situation?

RE: Exterior Mop Sink

I would push back hard to get the thing inside.

There are all sorts of problems that can/will happen with an outdoor fixture like this.

It will drain whatever rainwater that falls into it.  It will likely be used to wash down oily items which will introduce oil into the sanitary.  

It is likely this would be required to go to an oil interceptor because of this.  But sizing it will be a mess due to the outside nature of the drain - i.e. excess water going to it.

Then it will need to be winterized or the trap and piping will freeze and possibly break.

Since it will be within the "normal" 3'-5' of the building, it will likely need to follow the plumbing code.

If you want to look at what one looks like, you can look at Stern Williams' website.  Mustee also makes them.

RE: Exterior Mop Sink

The only person who is capable of answering your question is the local plumbing code official.

The attached link below shows that in some areas of the country, such an outdoor installation as you described it is acceptable. However, a roof over the drain will probably be required.

http://www.sonoma-county.org/PRMD/docs/techbulletin/p-8x.pdf

 

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources