This can make a restroom seem both unpleasant and unsanitary for users.
Floor drains in public bathrooms.
Lemonplumber fl where the use is the trap primer use a drain primer where the use is sized deep seal the trap or oversize the branch not sure what you mean as you seem to point to fu s as failure point where dfu s control the floor drain.
Lone star 2006 national standard plumbing code section 7 16 4 requires a floor drain in toilet rooms containing either two or more water closets or wall hung urinals or a combination of one or more water closets and wall hung urinals except in a dwelling unit outside of nj not certain what other states actually have adopted the nspc syarn.
The primary goal is to not get water on the floor in the first place.
The toilet size is also slightly different for the ada compliant bathroom and needs to have a central location somewhere between 16 and 18 from the closest wall or partition.
In addition to having a drain in the floor you would have to grade the floor to dip toward the drain from all potential water sources.
However even when floor drains are damp or even moist they can become a breeding ground for insect larvae which allows insects to easily craw or fly their way up the piping into the open air.
Visible drains however are only part of the issue.
They are often found in commercial restrooms and industrial spaces near and around water heaters basements kitchens and or laundry rooms.
However stall urinals may serve as floor drains if the entire floor can be drained to the urinals.
Floor drains lead into the sewer system allowing eco systems to develop.
One of the biggest issues that can occur in a public restroom is the build up of odors.
Cockroaches flies moth flies also known as sewer flies and other crawly things can creep up floor drains.
That dark abyss known as the floor drain is one of those things that most people don t even notice but it can be another source for restroom odor.
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Floor drains prevent stains and can allow some stains to be removed and cleansed.
We tend to like our floors to be flat and not all tilted toward a center drain in the middle of a floor.
This is especially true when the floor drains are dry.
Grab bars are also mandatory as assistive devices.
The toilet the sink the tub.