Bearing Standards for Steel-Structure Prefabricated Houses

The bearing standards for steel-structure prefabricated houses vary depending on the usage scenario and structural type, which can be broadly categorized into three types: steel-structure floor slabs, steel-structure roofs, and prefabricated panel steel-frame structures. Detailed explanations are provided below:

Bearing Capacity of Steel-Structure Floor Slabs The bearing standards for steel-structure floor slabs are closely related to the usage scenario.

• Residential Scenarios: The design bearing standard for steel-structure floor slabs in conventional residential buildings is generally 200-250 kg per square meter. This standard is based on daily living needs, requiring it to accommodate basic loads such as furniture placement and human activities, while also reserving a certain safety margin.
• Commercial Scenarios: The bearing requirements for steel-structure floor slabs in commercial venues such as shopping malls and offices are higher, typically ranging from 350-500 kg per square meter. These scenarios need to support dense foot traffic, shelves, office equipment, etc., imposing stricter demands on structural strength and stability.
• Industrial Scenarios: The floor slab bearing capacity in light industrial workshops generally ranges from 500-1000 kg per square meter, while heavy industrial workshops, which need to support large equipment or heavy materials, can have a bearing capacity exceeding 1000 kg per square meter. Industrial scenarios require specialized design based on parameters such as equipment weight and vibration frequency.

Bearing Capacity of Steel-Structure Roofs The bearing capacity of steel-structure roofs typically ranges from 30 to 100 tons. This range must consider factors such as the roof's structural form (e.g., trusses, space frames), span, material strength, and load types (e.g., snow accumulation, wind pressure, equipment loads). For example, northern regions need to increase the design value for snow accumulation loads, while industrial workshop roofs may need to support additional loads from ventilation equipment or solar panels.

Bearing Capacity of Prefabricated Panel Steel-Frame Structures The bearing capacity of prefabricated panel steel-frame structures is classified by grade:

• Grade I Panels: These can bear approximately 400 kg per square meter and are suitable for light-load scenarios such as temporary buildings and storage shelves.
• Grade II Panels: These can bear approximately 700 kg per square meter and can meet medium-load requirements, such as those in ordinary industrial workshops and multi-story parking lots.
• Grade III Panels: These can bear approximately 1000 kg per square meter and are suitable for heavy-load or special-requirement building scenarios, such as heavy machinery manufacturing workshops and logistics centers.

In practical applications, structural design and verification calculations must be conducted based on specific scenarios, load types, and regulatory requirements to ensure a balance between safety and cost-effectiveness.