A standard toilet compartment should be a minimum of 60" wide (measured perpendicular from side wall to side wall) and 56" deep (measured perpendicular from the rear wall to the inside of the front wall) for wall hung water closet and 59" deep for a floor mounted water closet. See Figure 604.8.1.1
Toilet compartments for children should be 60" wide and 59" deep min. regardless of whether it is wall or floor mounted water closet.
This minimum space required in toilet compartments is provided so that a person using a wheelchair can maneuver into position at the water closet as well as turn around to exit. This space cannot be obstructed by a baby changing tables or other fixtures.
Since a person using a wheelchair has to be able to turn around and exit the toilet compartment using such a tight space, toe clearances should be provided at the front and on the side of the partitions. This toe clearance allows the toes to project out of the compartment and allow the person to maneuver using more space beyond. The toe clearances should be 9" high for adults, 12" high for children and it should extend 6" beyond the partition.
If the toilet compartment does not have toe clearances, then the compartment must be larger. It should be 66" wide, and 62" deep for wall mounted water closet or 65" deep for floor mounted water closet or for children size compartment. This would be required at a hard wall toilet compartment since those typically do not have any toe clearances.
This hard wall toilet compartment did not have toe clearances,and it also didn't have the proper placement for the grab bars.