Floor Thickness of Container House

The floor thickness of a container house is typically 4mm, and some structures may include composite layers such as 2mm-thick steel horizontal members and 18mm plywood. Here is a detailed analysis:

1. Basic Floor Structure
   According to the 'Technical Specifications for Standard Container Houses', the floor of a container house is made of cold-rolled welded steel sections with a basic thickness of 4mm. This structure is fixed by welding at the four corners and has forklift holes (spaced 1200mm apart) to ensure load-bearing capacity and transportation convenience. This thickness serves as the core supporting layer of the container house floor, directly bearing the loads from personnel activities and furniture.

2. Additional Layers of Composite Flooring
   Above the 4mm steel sections, the floor system may include multiple composite layers:

• Steel Horizontal Members: 2mm thick, used to enhance the overall stiffness of the floor;
• Rock Wool Board: Wrapped in 0.5mm-thick galvanized steel sheets, providing fire resistance and thermal insulation;
• Plywood: 18mm thick, serving as the base layer for laying surface materials (such as PVC flooring or wooden flooring);
• Surface Materials: Such as 1.8mm-thick PVC flooring, meeting the requirements for wear resistance and slip resistance.
  Although these additional layers do not directly increase the 'structural thickness' of the floor, they collectively form a complete flooring system, with a total thickness that may exceed 20mm.

3. Non-Standard Customization and Special Scenarios
   Some customized container houses may adjust the floor thickness to meet specific needs:

• Lightweight Design: Using 3mm-thick steel sections to reduce self-weight but at the expense of some load-bearing capacity;
• High-End Renovation: Laying wooden flooring or tiles on the plywood base layer to increase the surface thickness without affecting the basic structure;
• Modular Integration: In rural inns, for example, the thickness of prefabricated walls (50-100mm) is independently designed from the floor system, with no direct correlation in thickness.

4. Material Selection Basis
   The setting of floor thickness needs to balance the three aspects of load-bearing capacity, fire resistance, and durability:

• 4mm steel sections can withstand the standard load of 25-45 tons for containers;
• The combination of rock wool board and galvanized steel sheets meets the Class A non-combustible standard;
• The plywood and PVC layers provide moisture resistance and easy cleaning, extending the service life.