Construction of Mobile Toilets in Scenic Spots in Shaanxi

The construction of mobile toilets in scenic spots in Shaanxi should integrate technical standards, construction deployment, key technologies, and maintenance points to ensure safety, environmental protection, and practicality.

I. Project Overview and Technical Standards
Mobile toilets in scenic spots in Shaanxi mostly adopt a composite system of a light steel structure body and eco-friendly materials. Each unit covers an area of 6-8 square meters and includes 1-2 toilet compartments (separated for men and women), a handwashing station, and an independent ventilation system. Structural safety must meet an earthquake resistance intensity of 8 degrees and a wind resistance rating of 12, with a foundation bearing capacity of ≥150 kPa. Environmental performance requires that sewage discharge meets the Class 1 A standard of the 'Discharge Standard of Pollutants for Municipal Wastewater Treatment Plants' (GB18918-2002), and formaldehyde emission is ≤0.1 mg/m³. Water-saving indicators involve the use of foam sealing plus micro-water flushing technology, with an average daily water consumption of ≤5 liters per toilet compartment. In terms of durability, the steel structure's anti-corrosion lifespan is ≥15 years, and the floor's abrasion resistance is ≥Grade 4 (GB/T 17657-2013).

II. Overall Construction Deployment
The construction adopts a matrix management approach, divided into a decision-making layer (project manager, technical leader, safety director), an execution layer (5 professional teams, each with 8-10 people), and a supervision layer (third-party inspection agency, supervision engineer). The construction areas include:

• Area A (Steel Structure Processing): Equipped with CNC cutting machines and CO₂ gas shielded welders, covering an area of 300 square meters.
• Area B (Module Assembly): Equipped with hydraulic lifting platforms and assembly fixtures, covering an area of 500 square meters.
• Area C (Finished Product Storage): Equipped with rain shelters and grounding resistance testers, covering an area of 800 square meters.
  The total construction period is 45 days, divided into preparation (5 days), processing (15 days), assembly (10 days), acceptance (5 days), and transportation and installation (10 days) stages.

III. Key Construction Technologies

1. Light Steel Structure Construction: The material is Q355B grade steel, with the main frame consisting of 100×50×3mm rectangular steel tubes and node plates with a thickness of ≥8mm. The cutting accuracy is ±1mm, and welding uses ER50-6 welding wire with an interlayer temperature of ≤150°C. Anti-corrosion treatment includes sandblasting and rust removal (Sa2.5 grade) + epoxy zinc-rich primer (80μm) + chlorinated rubber topcoat (60μm).
2. Eco-Friendly Processes: Biodegradable toilets do not require water flushing, and solar power supply is suitable for scenic spots without external power sources. The drainage system requires freeze-proof design.
3. Installation Process: Foundation concrete hardening → on-site assembly of the main body (completed on the same day) → water and electricity connection and leak testing → commissioning and acceptance.

IV. Materials and Maintenance
The main frame is recommended to be made of stainless steel or aluminum alloy, with板材 (panel materials) options including color-coated steel sheets (for insulation) or anti-corrosion wooden boards (for a natural style). Internal fittings should be dirt-resistant and durable, with some equipped with water-saving flushing devices. Daily maintenance requires regular inspection of water and electricity lines, cleaning of sewage outlets, enhanced freeze-proof checks in winter, and ensuring ventilation in summer.