There s no doubt threshold height can be confusing.
Shower door height code.
That is 30 inches by 30 inches.
A minimum space of 21 inches must be planned in front of lavatory toilet bidet and tub.
Shower maximum sizes are not mandated but minimum sizes are regulated.
The shower door needs to have an opening clearance of at least 24 inches.
For assistance with your specific situation contact your shower manufacturer.
Shower controls should be placed at a height 40 50 102 127 cm above the shower floor and out of direct line of the water path to avoid being caught in extremely cold or hot water when operating.
This is also a safety issue because users who are forced to slip around narrow door openings are more prone to slipping on the floor.
This is because shower doors often are made of materials such as glass that can easily break and pose a danger.
Shower floor minimum size is usually mandated to be at least 30 inches square.
Shower heads are located at a standard height of 80 203 cm but can be set at a minimum height of 72 183 cm if desired.
Toilet bathroom building codes.
Code for the doorway opening to the bathroom is 32 inches with 34 inches being the recommendation.
So says the building code.
Threshold heights vary from 1 2 to 2 in many shower and pan designs though some have more or fewer options based on the shower or pan s size.