How to Build Prefabricated Panel Houses

The construction of prefabricated panel houses mainly consists of two core steps: prefabricated panel production and on-site assembly. Combining modular technology can further enhance efficiency and quality.

1. Prefabricated Panel Production

Prefabricated panels are the fundamental components of house construction, and their production needs to be completed in a factory or specialized site.

1. Traditional Prefabricated Panel Production:

   • Model Construction: Use wooden boards to nail together a hollow model. The model size is determined according to design requirements, and space for steel bar placement needs to be reserved inside.
   • Steel Bar Placement and Pouring: Place steel bars in the hollow part of the model according to design requirements to enhance structural strength. Then, fill the model with cement to ensure dense filling without air bubbles.
   • Curing and Demolding: After the cement solidifies, curing is required (usually taking several days to several weeks). Once the strength meets the standard, knock off the wooden boards to form finished prefabricated panels.

2. Modular Prefabrication Technology:

   • Independent Module Manufacturing: Decompose the house into independent modules such as ceilings, walls, and bathroom waterproof layers, and complete refined production in the factory. For example, wall modules can integrate insulation layers and pipeline embedment, and bathroom modules can have waterproof treatment directly.
   • Final Assembly Integration: After individual production of scattered components (such as door and window frames and decorative components), complete modular combination through a final assembly platform to form standardized building units.

2. On-site Assembly

After the prefabricated components are transported to the construction site, precise assembly needs to be carried out according to the design drawings.

1. Foundation Construction:

   • Complete foundation treatment and foundation pouring (such as strip foundations or independent foundations) in advance to ensure a flat ground and a bearing capacity that meets the requirements.

2. Component Positioning and Connection:

   • Floor Panel Assembly: Select the direction of the prefabricated panels according to the house span. Usually, they are built horizontally along the direction with a smaller span. Fix the panels between each other through reserved steel bars or connectors.
   • Modular Assembly: If modular technology is adopted, use lifting equipment to assemble modules such as ceilings, floors, and walls in order. Connect them through bolts, welding, or grouting to ensure structural stability.

3. Construction Characteristics and Advantages:

   • Efficiency Improvement: Modular construction adopts a parallel operation mode, with factory production and on-site construction carried out simultaneously. The construction period can be shortened by more than 60%.
   • Quality Control: Factory standardized production reduces human errors, and the component dimensions are highly accurate. The on-site assembly error is controlled within millimeters.
   • Environmental Protection and Energy Saving: Reduce on-site wet operations (such as concrete pouring), lower dust and noise pollution, and increase the material utilization rate by more than 20%.

Precautions: Modular construction has high requirements for the industrial foundation and requires a complete technical system, production system, and industrial cluster support. For rural self-built houses, traditional prefabrication or modular solutions should be selected according to actual conditions.