Kaocheng Mobile Toilet Installation

The installation of mobile toilets in Kaocheng should be carried out according to standardized procedures based on their types (such as integrated, trailer-mounted, etc.). The core steps include site preparation, main body installation, system connection, and commissioning and acceptance, as detailed below:

I. Pre-installation Preparation

1. Site Survey
   • The ground should be concrete-hardened or have a compacted and stable foundation. For trailer-mounted toilets, a ≥10cm gravel layer should be laid and compacted.
   • Confirm that there are no underground pipeline obstacles at the installation site, and reserve space for transportation and lifting. For trailer-mounted toilets, ensure that the distance to the sewage outlet is ≤15 meters.
2. Foundation Treatment
   • For concrete foundations, pre-embed fixing bolts with a surface level error ≤5mm. Lightweight toilets can use asphalt or hardened ground.
   • For trailer-mounted toilets, use pre-fabricated concrete piers or steel structures for leveling, and recheck the levelness to prevent box deformation.
3. Equipment and Personnel
   • Prepare tools such as cranes and level gauges. Installation personnel should have qualifications in lifting and electrical work.
   • Check the completeness of toilet units and accessories (e.g., for trailer-mounted toilets, verify the chassis hooks and sewage tanks).

II. Main Body Installation

1. Lifting and Positioning
   • Hang the lifting rope at the designated points on the bottom steel structure and slowly lower it to the position directly above the foundation, aligning it with the pre-embedded bolts.
   • For trailer-mounted toilets, use a trailer for movement, lower the support legs (with a load-bearing capacity ≥2 tons each), and ensure the inclination is <3°.
2. Leveling and Fixing
   • Adjust the level using thin steel plate shims and tighten the nuts to prevent displacement. For trailer-mounted toilets, test the stability of the support legs.

III. System Connection

1. Water Supply System
   • Connect drinking-water-grade pipes (such as PPR pipes) with sealed interfaces. Trailer-mounted toilets can be connected to tap water or equipped with water tanks (with anti-freeze valves in winter).
2. Drainage System
   • The diameter of the sewage pipe should be ≥110mm, maintaining a 5° slope. Integrated toilets need to be connected to septic tanks or municipal sewage networks.
3. Power Supply System
   • For trailer-mounted toilets, the solar panels should face due south with an inclination angle of ±10° based on the local latitude. Circuit connections should be carried out by professionals and grounded.

IV. Commissioning and Acceptance

1. Function Testing
   • The single flush water consumption of the toilet system should be ≤1.5L, the exhaust fan air volume should be ≥15m³/h, and the lighting brightness should be ≥100lux.
   • Pressurize the sewage tank to 0.02MPa and maintain it for 5 minutes without leakage. For integrated toilets, check the electrical circuit and sealing.
2. Trial Operation
   • Operate the equipment continuously more than 10 times to confirm there are no water leaks or malfunctions. For trailer-mounted toilets, clean the sewage tank weekly and check the chassis bolts every 3 months.

V. Differentiated Installation Points

• Integrated Box-type Toilets: Pre-assembled in the factory, only requiring lifting and water and electricity connection on-site, taking 2-4 hours.
• Split-type Toilets: Install the chassis, wall panels, and roof panels in sequence, with wall panel installation taking 1-2 hours.
• Trailer-mounted Toilets: Require collaboration from 2-3 people and take 4-6 hours. Lightweight models (<1.5 tons) with shock-absorbing tires are easier to move.

Reference Standards: Compliance with the "Hygiene Standards for Mobile Toilets" (GB/T 21239-2023), "Design Standards for Urban Public Toilets" (CJJ14-2016), and other requirements is required.