Construction Methods for Bathrooms in Container Houses

The construction of bathrooms in container houses requires comprehensive planning in terms of size and layout, waterproofing, sewage systems, facility configuration, and installation stability, as detailed below:

1. Determining Container Size and Layout

Customize bathroom facility sizes based on container specifications (e.g., 20-foot or 40-foot standard containers), prioritizing quick-assembly structures to enhance space utilization. For example, small containers can be designed with a dry-wet separation layout, using glass partitions to divide the shower area from the toilet area; large containers can include additional independent dressing rooms or storage cabinets. The layout should reserve at least 60 cm of passage width and ensure that door opening does not interfere with the use of internal facilities.

2. Waterproofing

1. Bottom Waterproofing: Lay 2 mm thick polymer waterproofing membranes or polyurethane waterproof coatings, extending more than 30 cm up the walls to form a continuous waterproof layer.
2. Walls and Ceiling: Apply waterproof coatings twice on the inner walls, using silicone sealant to fill joints; the outer walls can be fitted with aluminum foil insulation layers for both waterproofing and thermal insulation.
3. Door and Window Sealing: Use aluminum alloy thermal-break doors and windows with EPDM rubber seals, and fill the gaps between window frames and walls with waterproof mortar.

3. Sewage System

1. Sewage Collection: For temporary use scenarios, a 500 L fiberglass septic tank can be configured; for long-term use, it is recommended to connect to municipal sewage networks or use MBR membrane bioreactors for treatment.
2. Ventilation and Deodorization: Install axial fans with a ventilation capacity of 150 m³/h, paired with activated carbon filters; prioritize water-saving toilets with traps to reduce odor generation.
3. Pipe Maintenance: Use PVC-U pipes for sewage with a slope of no less than 2%, and set inspection ports at key nodes; for shower drains, choose anti-clogging types with a pipe diameter of no less than 50 mm.

4. Facility Configuration

1. Infrastructure: Reserve a 110 mm diameter sewage outlet, a 50 mm drainage outlet, and a 220 V power outlet in the container; install explosion-proof lighting and emergency lights on the ceiling.
2. Sanitary Equipment: Equip with ceramic toilets, stainless steel sinks, and thermostatic showers; optionally install electric water heaters or solar collectors; install foldable clothes racks and first aid kits on the walls.
3. Safety Design: Lay anti-slip tiles on the floor and install handrails in the shower area; use circuit breakers for electrical circuits, with a one-touch power cut-off in emergencies.

5. Installation Precautions

1. Structural Reinforcement: Install L50×5 angle steel supports at the four corners of the container and weld a 10 mm thick steel plate base at the bottom to ensure an overall wind resistance rating of up to Level 12.
2. Material Selection: Use 50 mm thick rock wool sandwich panels for the walls, with a thermal conductivity of ≤0.045 W/(m·K); spray epoxy zinc-rich primers on the steel structure surfaces with a dry film thickness of ≥80 μm.
3. Acceptance Criteria: Conduct a 48-hour water closure test after installation to check for leaks; the water flow test for sewage pipes should reach 110% of the designed flow rate.