Gansu Outdoor Mobile Toilet Construction

The construction of outdoor mobile toilets in Gansu requires comprehensive consideration of multiple factors, including project planning, structural design, functional standards, climate adaptation, and construction management.

I. Project Overview and Scale
The construction of outdoor mobile toilets in Gansu covers two typical types of projects: one involves building 20 toilets (12 for men and 8 for women) on specific streets, while the other covers 50 modular toilets in scenic spots, squares, transportation hubs, and other scenarios. The former focuses on local area needs, while the latter emphasizes adaptability to multiple scenarios, both aiming to enhance public service convenience.

II. Structural Form and Material Selection
The toilet bodies are constructed using lightweight steel structures paired with eco-friendly interior and exterior cladding materials, balancing durability and ecology. Each toilet occupies an area of 15-20 square meters, with a lightweight steel frame as the main structure and composite color steel plates for the enclosure system. In specific cases, materials are further refined: hot-dip galvanizing enhances corrosion resistance, metal carved plate wall panels improve aesthetics, and aluminum alloy doors, PVC ceilings, and marble steps meet moisture-proof, lightweight, and durable requirements, respectively.

III. Functional Standards and Regulatory Basis
Toilet design strictly adheres to the "Design Code for Outdoor Public Toilets" (GB50337-2013) and the "Planning Code for Urban Environmental Sanitation Facilities" (GB50337-2013), ensuring ventilation, lighting, and sanitary facilities meet national standards. Functionally, in addition to basic toilet needs, they must adapt to different scenarios (e.g., scenic spots considering tourist flow, construction sites focusing on durability), serving surrounding residents and transient populations.

IV. Climate Adaptation and Technical Versions
Gansu exhibits significant climate zone differences, requiring targeted construction optimizations:

• Hexi Corridor Type: For areas with annual precipitation <200mm and severe winter cold (-25°C), waterless ecological treatment technologies (e.g., microbial degradation) are used to prevent pipeline freezing, along with enhanced insulation layer design.
• Longzhong Plateau Type: Focuses on wind and sand prevention, reducing sand erosion through sealed doors and windows, reinforced structures, and wear-resistant materials.
• Longnan Humid Type: For environments with annual precipitation of 400-800mm, it is equipped with enhanced drainage systems (e.g., optimized slopes, waterproof coatings) and corrosion-resistant and moisture-proof materials (e.g., stainless steel hardware).

V. Construction Organization and Challenge Response
The construction team consists of core members such as project managers and technical leaders, with resource allocation covering professional trades like steel structure installers and plumbers, as well as transportation and testing equipment. Key challenges include:

• Climate Adaptation: Electric tracing is used to insulate pipelines in winter, high-temperature-resistant materials are selected in summer, and enhanced sealing protection is implemented during sandstorms.
• Geological Treatment: Gravel foundation replacement enhances load-bearing capacity in the Hexi Gobi region, while lime-soil compacted piles prevent settlement in the Loess Plateau region.
• Rapid Construction: By prefabricating modular components (e.g., wall panels, roofs) in factories, on-site installation cycles are compressed to within 48 hours, minimizing impact on the surrounding environment.