Principles of Mobile Toilets

The principles of mobile toilets cover five major aspects: design, site selection, numbering, site layout, and management and maintenance, as detailed below:

Design Principles
They must comply with the 'Urban Public Toilet Hygiene Standards' and optimize functionality based on local climate characteristics. For example, ventilation devices should be installed in hot summer regions, while heated models should be chosen in cold winter areas. Additionally, the structure must meet load-bearing and waterproofing requirements to ensure safety and durability during use.

Site Selection Principles
The focus is on pedestrian flow distribution and convenience. In scenic spots, parks, and other venues, one toilet should be provided for every 500 people, with at least a 20% reserve for large-scale events. Sites should avoid low-lying areas prone to waterlogging and stay away from sensitive locations such as residential buildings and schools (e.g., Anyang City requires a minimum distance of 15 meters) to reduce odor and noise impacts. Furthermore, they should avoid environmentally sensitive areas like water source protection zones and food processing areas to prevent pollution.

Numbering Principles

1. Uniqueness: Each toilet number should be independent to avoid management confusion.
2. Systematicness: Numbers should be arranged by region, type, or installation time, such as using street prefixes to distinguish different areas.
3. Simplicity: Use easily memorable character combinations and avoid complex codes.
4. Scalability: Reserve adjustment space to accommodate increases in quantity or changes in management needs.

Site Layout Principles

1. Space Planning: A single-person toilet should occupy 1.5-2 square meters, while double-person or barrier-free types require ≥2.5 square meters, with aisles ≥1.2 meters wide.
2. Functional Areas: The recommended ratio of male to female toilet stalls is 1:1.5 (1:2 for large-scale events). Barrier-free stalls should be equipped with handrails and emergency call buttons and located near exits. Each toilet group should include a sink, hooks, and a toilet paper holder, with fans added in summer and insulation measures in winter. Trash cans should be placed ≥3 meters away from toilets.
3. Construction Requirements: Verify ground load-bearing capacity; soft soil foundations require steel plate or concrete base reinforcement. Sewage pipe connections must comply with municipal standards to prevent groundwater contamination. Install warning signs, night lighting (brightness ≥30 lux), and non-slip floor tiles.

Management and Maintenance Principles
Cleaning frequency should be adjusted based on usage volume, generally at least once daily (twice daily in Anyang City, with increased frequency during peak periods), using deodorizers to maintain fresh air. Regularly inspect facilities for damage and promptly replace consumables like toilet paper and hand soap. Some regions require waste sorting and provide spare stalls for emergencies, coordinating with municipal sanitation departments for rapid fault response.