Mobile Toilet Size and Internal Functions

The size design of the internal functional areas of mobile toilets should take into account both comfort and safety during use. The following are the specific size and layout considerations for each functional area:

1. Basic Dimensions of the Toilet Area
The internal clear width of a single toilet stall should meet the needs of human movement, generally not less than 0.85 meters, with an ideal range of 0.9 to 1.0 meters, ensuring that users can naturally squat, turn around, or adjust their posture. The clear depth should be between 1.2 and 1.5 meters to accommodate the toilet (such as a squat toilet or sit-down toilet) and necessary legroom. The door design should ensure easy passage, with a door width of not less than 0.6 meters to avoid difficulties in entering and exiting due to narrow space.

2. Dimensions of Accessible Toilet Stalls
For wheelchair users, accessible toilet stalls need to be enlarged to accommodate wheelchair movement and rotation. The internal clear width should be at least 1.5 meters, and the clear depth should be at least 1.8 meters, ensuring that the wheelchair can turn 180 degrees after entering. Additionally, the sit-down toilet should be equipped with safety handrails, with the handrail height conforming to ergonomic standards (40-45 centimeters) to provide stable support. The height of the sit-down toilet itself should also be consistent with that of conventional toilets (40-45 centimeters) to avoid the risk of falls due to height discomfort.

3. Height Standards for Other Facilities

• Urinals: The height for adult use is approximately 60 centimeters, facilitating natural standing urination. If used in children's settings such as kindergartens, the height should be reduced to about 45 centimeters to accommodate children's heights.
• Sinks: Typically set at a height of 80-85 centimeters, conforming to the operating habits of adults standing with their arms naturally hanging down, while also preventing water from splashing out.
• Showerheads: The height range is 1.9 to 2.1 meters, ensuring that users of different heights can use them comfortably, while also avoiding the risk of scalding due to the showerhead being too close to the head.

4. Basis for Internal Space Division
The size design of mobile toilets should integrate principles from multiple disciplines: Ergonomics ensures that facility heights and spaces conform to human movement patterns; Material Mechanics guarantees structural stability (e.g., accessible toilet stalls need to bear the weight of wheelchairs); Hygiene Standards require appropriate spacing between toilets and walls/floors for easy cleaning; Practical Application Scenarios determine the functional combination approach (e.g., multi-stall public toilets need to balance functionality and transportation feasibility through modular layouts, while large container-type public toilets may include multiple toilet stalls, accessible facilities, and management rooms).