Layered Section View of Container House Walls
The layered section view of container house walls should be designed by combining conventional building wall construction with the characteristics of container houses. The core layering logic is as follows:
1. Exterior Finish Layer
The exterior finish of container houses must balance protection and aesthetics. The original metal container walls require anti-corrosion treatment, such as applying anti-rust paint or covering with weather-resistant new materials (e.g., aluminum-plastic panels, fluorocarbon paint). In coastal areas, anti-salt spray corrosion coatings should be used. For architectural diversity, decorative layers can be added outside the anti-corrosion layer, such as fixing cultural stones or wood veneer panels with mechanical anchors, in which case the anchor specifications, spacing, and quantity should be indicated.
2. Waterproof and Vapor Barrier Layer
Metal walls are prone to condensation, necessitating layered water vapor barrier. The outer waterproof membrane (e.g., self-adhesive waterproofing membrane) should be tightly laid against the metal panel, with seams sealed by hot melting or adhesive. The vapor barrier (e.g., polyethylene film) is placed on the inner side of the insulation layer to prevent indoor moisture from entering the insulation layer and causing condensation. The two layers should be staggered and overlapped, with an overlap width of no less than 100mm.
3. Insulation Layer
Container metals have high thermal conductivity, requiring the addition of efficient insulation materials. Common solutions include polystyrene boards (EPS/XPS), rock wool boards, or phenolic foam boards, with thickness determined by the climate zone (e.g., 80-100mm in severe cold regions). The insulation layer should be connected to the metal panel using bonding mortar or mechanical fasteners, with fastening points spaced no more than 600mm apart to prevent local detachment.
4. Structural Reinforcement Layer (Optional)
If the wall needs to bear loads (e.g., hanging heavy objects or being converted into a two-story structure), a reinforcement layer should be added within the container frame. Light steel studs (spaced 400-600mm apart) can be fixed to the container sidewall with self-tapping screws, with sound-absorbing cotton filled between the studs; or a fine aggregate concrete layer (thickness ≥50mm) can be poured, reinforced with steel mesh to enhance overall rigidity.
5. Interior Wall Layer
The interior wall must meet fire protection, sound insulation, and decoration requirements. The base layer can be made of fire-resistant gypsum board or calcium silicate board, fixed to the studs with self-tapping screws; the finish layer can be painted with environmentally friendly latex paint or wallpapered. If sound insulation is required, a sound insulation felt (thickness 3-5mm) can be added between the base and finish layers.
Drawing Points: The section view should indicate the material names, thicknesses, and connection methods of each layer (e.g., “XPS insulation board, 50mm thick, fixed with bonding mortar”). The recommended scale is 1:20-1:50, with enlarged details for key areas (e.g., door and window openings). Before designing, consult a structural engineer to confirm the load-bearing capacity of the container frame and anti-corrosion treatment plan.
