Container House Design Specification
The Container House Design Specification primarily focuses on technical standards, covering aspects such as scope of application, structure, fire prevention and corrosion resistance, design principles, spatial planning, and material selection.
Scope of Application and Basic Requirements: It applies to low-rise and multi-story modular combined houses, with a maximum of 6 stories and a height not exceeding 24 meters, and a seismic fortification intensity not exceeding 8 degrees. The design service life is divided into 50 years (with a structural importance coefficient ≥ 1.0) or 25 years (≥ 0.95). Existing containers must be inspected and qualified according to GB/T12418, with no defects in beams and columns, and all 8 corner fittings intact and reliable. Quality certification documents must be provided upon arrival.
Structural Load-Bearing and Construction: A pure steel frame load-bearing system is adopted, with wall panels, roof panels, and glass not participating in load-bearing. The force transmission path is 'panel secondary beam → main beam → corner column → corner fitting → foundation/lower container'. Corner fittings are the only stacking force transmission points, and spot welding is prohibited as a substitute. The steel for the container body is selected as weldable weathering steel (GB/T 4171), while non-container components use Q235B or Q345B (GB/T 700, GB/T 1591). When large openings weaken structural stiffness, containers with holes should be staggered and symmetrically arranged with those without holes. The overhang length should not be excessive, and no holes are allowed in the overhang section. Lateral force-resisting members must be symmetrical in plan and uniform in vertical stiffness. The corner fittings and corner columns of multi-story stacked containers must be aligned vertically and locked tightly.
Fire Prevention and Corrosion Resistance: The use of flammable core materials such as EPS in enclosure filling materials is prohibited. For crowded places, A-grade rock wool or glass wool should be used, with fire resistance limits controlled according to GB50016 (commonly requiring ≥ 0.5 hours, stricter for high-rise modules). Steel structure fireproof coatings, floor fire separations, and escape routes (with a clear width ≥ 0.9 meters) must be provided, along with fire extinguishers, smoke detectors, and emergency lighting.
Design Principles: Structural stability is the core, and no original load-bearing components should be damaged during modification. Space utilization is key, requiring efficient use through reasonable layout and multi-functional furniture. Environmental adaptability should consider issues such as heat insulation, thermal insulation, and ventilation. Safety must comply with standards for fire prevention and electric shock protection.
Spatial Planning: Functional zones (such as rest areas, work areas, and storage areas) should be clearly defined, with a simple flow design. Movable partitions or folding furniture can be used to enhance flexibility. Vertical space (such as loft structures) can be utilized to increase area, and windows should be reasonably set to balance lighting and privacy.
Material Selection: Structural materials must be durable, with rock wool or polyurethane foam insulation layers added internally. Decorative materials should be environmentally friendly, with bamboo, wood, or recycled wood options for walls and floors. Door and window materials should have good sealing properties, with aluminum alloy or UPVC preferred, and double-glazed glass used. Furniture materials should focus on practicality and safety, using lightweight and sturdy materials and avoiding sharp edges and corners.
