Container House Water System Design
The water system design of container houses should incorporate considerations for spatial layout, waterproof sealing, thermal insulation, and system integration to ensure functionality and durability.
1. Spatial Layout and Water System Planning
The water system design of container houses should be planned in conjunction with spatial layout. For example, when using 2-3 containers for splicing or staggered stacking, the locations of water-using areas such as bathrooms and kitchens should be determined in advance to facilitate centralized arrangement of water supply and drainage pipes. For single-container small units (e.g., 15㎡), pipes can be concealed using foldable furniture or integrated cabinets to enhance space utilization. Pipe embedding is typically completed in the factory and should be coordinated with the steel structure frame and wall insulation layer to avoid structural damage from on-site wet operations.
2. Waterproofing and Sealing
Water system interfaces (e.g., around doors and windows, container joints, roof gutters) are key areas for waterproofing. Sealant should be used to fill gaps and replaced regularly (every 5-7 years) to prevent water accumulation and corrosion of steel plates. The roof should be designed with a slope (≥2%) to guide drainage and avoid water accumulation; waterproof sleeves should be installed where pipes penetrate walls and sealed with epoxy resin. Additionally, the container base should be elevated (e.g., on pile foundations) to avoid direct contact with ground moisture and extend the corrosion protection cycle.
3. Thermal Insulation and Anti-Condensation Measures
Water pipes should be designed in conjunction with wall insulation layers. In cold regions, pipes can be wrapped with rubber-plastic insulation cotton (thickness ≥20mm) to prevent freezing; a vapor barrier should be added inside walls to block water vapor penetration and avoid condensation dripping. If a solar water heating system is used, pipe routing should be planned to minimize heat loss, and the water tank base should be stable to avoid vibration damaging seals.
4. System Integration and Sustainable Design
Modern container houses often integrate rainwater harvesting systems, directing rainwater from roof gutters to storage tanks for later use in flushing toilets or irrigation. The water system design should include reserved interfaces and anti-backflow devices to prevent sewage backflow. Additionally, the location of septic tanks or biodegradable toilets should be away from water sources and comply with environmental regulations. If photovoltaic power is used to drive water pumps, the layout of electrical and water systems should be planned in advance to ensure system stability.
5. Maintenance and Compliance
The water system should be inspected regularly (e.g., annually), focusing on pipe sealing at welds, corners, and other rust-prone areas. When building on rural homesteads or leased land, approvals should be obtained in advance to ensure the water system design complies with local building codes (e.g., pipe slope, sewage discharge standards). In coastal or humid regions, the corrosion protection recoating cycle should be shortened (every 3-5 years), and corrosion-resistant pipes (e.g., PPR pipes) should be used to reduce long-term maintenance costs.
