The toilet the sink the tub.
Are floor drains required in commercial bathrooms.
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.
Wet area rooms of class 2 3 part 4 buildings require floor wastes regardless of the type of shower only to prevent the potential for damage to other sole occupancy units or common areas in buildings.
The primary goal is to not get water on the floor in the first place.
All this needs to be done in copper or cast iron as plastic is forbidden on commercial installations.
They also might be required by local building departments.
Floor wastes may also be installed even though they are not required by the ncc for example outside the shower area in a residential bathroom.
In apartment buildings residential buildings such as motels and boarding houses and residential parts of commercial buildings it is necessary to install floor wastes in bathrooms and laundries if a bathroom or laundry is situated at any level above a sole occupancy unit or a public space.
Floor wastes are not required in wet area rooms of class 1 buildings unless the area contains an unenclosed shower in which case the shower waste doubles as the floor waste.
Of course even though the ncc may not require floors to be graded to some floor wastes there is nothing that prevents this being.
In the 3 bathrooms of my building we have 1 floor drain each.
Floor wastes not required by the ncc.
Code for floor drains in commercial bathrooms.
Floor drains make cleaning a restroom much easier because surfaces can be easily washed and rinsed while the water drains from the room.
For apartment buildings class 2 buildings hotels motels and boarding houses class 3 buildings and residential parts of commercial buildings class 4 parts of a buildings bca volume 1 requires a floor waste be installed in bathrooms and laundries if a bathroom or laundry is situated at any level above a sole occupancy unit or a public space.
Also need trap primers for them.
So starting with volume 1 requirements.
As there is no requirement in the ncc to control overflows in these circumstances it follows that there is also no requirement in the ncc to drain the floor to these floor wastes.