You want to make sure you are measuring exactly where the partitions will be placed because bathrooms are not always exactly square.
Minimum toilet stall dimensions.
However stall depth can be anywhere between 48 inches to 78 inches as needed.
Standard toilet stalls are 36 wide by 60 depth.
Code for the doorway opening to the bathroom is 32 inches with 34 inches being.
Figure 30 a standard stall.
The centerline of the water closet is 18 inches 455 mm from the side wall.
The minimum interior shower size is 30x30 inches or 900 square inches in which a disc 30 inches in diameter must fit.
The interior shower size is at least 36x36 inches.
Generally stall doors open inward but for ada accessible stalls the doors should open outward to make it easier for those with accessibility.
The first size consideration to make when designing a bathroom is the entry and the amount of clear space required.
Standard bathroom stall sizes rarely vary and tend to be 36 inches wide and 60 inches deep.
The minimum depth for a partition stall is 48 inches but the depth can be as much as 78 inches if necessary.
To satisfy ada requirements all newly constructed square restroom stalls must have doors that swing outward with no more than four inches from the diagonal corner to the toilet.