Installation of Multi-row Mobile Toilets

The installation of multi-row mobile toilets requires systematic planning, taking into account site conditions and standard operating procedures. The process is mainly divided into the following steps:

I. Preliminary Planning and Site Preparation

1. Demand Assessment and Model Selection Confirmation
   It is necessary to clarify the estimated foot traffic, duration of use, ratio of male to female toilet stalls, and accessibility requirements for the intended use scenarios (such as tourist attractions, construction sites, or temporary events). Based on these needs, select the specifications (e.g., double units, multiple connected units), style (open or enclosed), and internal configurations (flush, water-saving, or packaged types). For example, double-unit toilets require pre-embedded sewage pipe connections with a pipe diameter approximately 30% larger than that of single-unit toilets to accommodate the load of two stalls.

2. Site Survey and Location Selection
   The site should be flat and solid, with preference given to cement-hardened ground or stable compacted soil bases. Avoid low-lying areas prone to water accumulation, slopes, and soft soil areas. Reserve space for septic tanks or sewage storage tanks and ensure clear access for waste removal vehicles. If connection to municipal water supply and drainage networks is not possible, plan for independent freshwater supply and sewage collection systems, keeping them away from drinking water sources and kitchens to maintain hygiene.

3. Foundation Construction
   For long-term use or when ground conditions are poor, pour concrete foundation piers or lay load-bearing platforms to ensure a level surface. Double-unit toilets require concrete foundation slabs with pre-embedded sewage pipe connections and reserved septic tank pits with capacities matching the total load of two stalls.

II. Delivery of Materials and Equipment

1. Transportation of Main Body Units
   Use flatbed trucks for transportation, and employ forklifts or cranes for loading and unloading to avoid damaging the unit structure or coating through collisions.

2. Inventory of Supporting Components
   Check connecting bolts, sealing strips, drainage hoses, ventilation ducts, electrical wiring, and other accessories. Verify that septic tanks, freshwater tanks, water supply pipes, and valves are complete and in good condition.

3. Equipment and Personnel Preparation
   Ensure that tools such as cranes (or forklifts), levels, wrenches, and drills are available, and that installation personnel possess safe operating skills.

III. Main Body Installation and Fixing

1. Unit Positioning and Leveling
   Use lifting equipment to slowly lower the unit onto the foundation, measure multiple points at the bottom with a level, and make fine adjustments with shims to achieve complete levelness, ensuring smooth door operation and stable internal facilities.

2. Unit Connection (for multiple connected units)
   When connecting multiple units, pay special attention to the balance of the center of gravity for double-unit toilets. The lifting point layout should be calculated for load-bearing capacity, minimizing lifting operations but requiring precise positioning. Ensure that the sealing strips between the base and foundation are fully in place to prevent leakage during installation.

IV. Pipe Connection and Commissioning

1. Installation of Water Supply and Drainage Systems
   Equip the water inlet pipes with dual independent valves and use inclined tee connections for sewage pipes to merge into the main pipe, with the inclination angle strictly following specifications. Double-unit toilets require fewer external connections but have increased complexity in internal piping.

2. Commissioning of Internal Equipment
   Adjust the water pressure of water-saving flush valves and the air volume of ventilation systems to ensure balanced air pressure in the exhaust branches of each stall in double-unit toilets. Centralized ventilation design reduces the number of fans but imposes higher requirements on duct layout.

V. Installation of External Auxiliary Facilities

Install lighting systems, signage, etc., with waterproof sleeves protecting the power supply lines and sealed connections at interfaces. For double-unit toilets, the night warning lights should be calculated for line-of-sight angles to ensure clear visibility from all directions.