Prefabricated House Bearing Capacity Issues

The bearing capacity of a prefabricated house primarily depends on the grade and design standards of the prefabricated panels. For ordinary residential prefabricated panels, the bearing capacity is approximately 200 kilograms per square meter, and higher values can be achieved under special circumstances.

Bearing Capacity Grades and Applicable Scenarios of Prefabricated Panels

Prefabricated panels are classified into different grades based on their bearing capacity, and their standard values directly affect their usage scenarios:

• Grade I Panels: With a bearing capacity standard value of 100 kilograms per square meter, they are suitable for scenarios where light items are placed, such as placing small furniture or daily walking in ordinary residences, meeting national basic safety requirements.
• Grade II Panels: With a bearing capacity standard value of 200 kilograms per square meter, they are a common choice for most residences and can meet the needs of placing heavier furniture and multiple people moving around in the home.
• Grade IV Panels: With a bearing capacity standard value of up to 400 kilograms per square meter, they are typically used in places with high bearing requirements, such as gyms and factories, where large equipment or heavy objects need to be supported.
• Composite Panel Technology: Through special processes, the bearing capacity can be increased by approximately 30%. For example, a single 3.6-meter-long composite panel can have an ultimate bearing capacity of up to 2.2 tons, suitable for scenarios with extremely high structural strength requirements.

Key Factors Affecting Bearing Capacity

The actual bearing capacity of prefabricated panels is influenced by the following factors:

• Materials and Processes: The higher the cement grade and the better the quality of the steel bars, the higher the strength of the panels. For example, a combination of high-grade cement and high-quality steel bars can significantly enhance bending and compression resistance.
• Dimensions and Specifications: Thickness and length are important parameters. Common prefabricated panels have a thickness of 12 to 15 centimeters, and the thicker the panel and the shorter the length, the stronger the bearing capacity. For example, a 15-centimeter-thick panel can bear heavier loads than a 12-centimeter-thick panel.
• Design Standards: During construction, a panel grade higher than the actual demand is usually selected to reserve a safety margin. For example, a residential design may adopt Grade II panels, but Grade IV panels may be selected for actual construction to enhance safety.

Precautions for Bearing Capacity Usage

• Uniform Distribution: The bearing capacity value of 200 kilograms per square meter is based on the premise of uniform weight distribution. If the weight is concentrated on a very small area (such as the size of a shoebox), even if the total weight does not exceed the standard, local stress may be too high, leading to floor cracking.
• Pressure Dispersion: When placing large furniture or heavy objects, it is recommended to use trays or pads to disperse the pressure and avoid local overloading. For example, heavy objects such as pianos and fish tanks should be placed above support beams or use enlarged bases.