commercial sink plumbing

This is a typical problem I am sure. The bathroom sink drains ridiculously slow. It has been neglected for years. It does not help that recently I was sick (the cause of which is an entirely different story) and I did not make it to the toilet one day and projectile vomited a lunch into the...

Hi all. My friend works in a new government building. She was checking out the self-sevice cafe when she heard unusual noise from the sinks. Apparently there are three that drain to the point in the photo. I've never heard of an interior drain 'hookup' like this one! Does this somehow meet code...

I am not a plumber but I volunteered to replace a single basin wash tub with a 3-basin commercial sink in an old grocery store turned non-profit soup kitchen. I used standard residential plumbing fittings and it worked fine but not for long. About every 3 months the pipes have loosened to the...