Prefabricated Light Steel Structure House

A prefabricated light steel structure house uses cold-rolled light steel keels made from hot-dip galvanized aluminum steel strips as its core material, constructed by assembling factory-prefabricated components on-site. Its key features, construction process, and wall structure are as follows:

I. Core Features

1. Superior Structural Performance: The main structure has an earthquake resistance of up to magnitude 9 and can withstand winds of up to force 12, making it suitable for earthquake-prone and high-wind areas.
2. Efficient and Environmentally Friendly Construction: The construction period is reduced by 50% compared to traditional buildings, with material waste rates dropping to 3%, minimizing on-site wet operations and construction waste.
3. Significant Cost-Effectiveness: The overall cost is 15%-20% lower than that of brick-and-mortar structures. For example, Foshan Huagewanshun Building Materials Co., Ltd. offers a rural villa product priced at 100,000 yuan, including design drawing services.
4. Outstanding Energy Efficiency: The exterior walls are filled with glass fiber wool for thermal insulation, equipped with breathable membranes to regulate humidity, and the roof supports the integration of photovoltaic tiles, improving overall energy efficiency by 40%.
5. Wide Range of Applications: It covers rural housing, tourist resorts, and overseas projects, with 28 provinces across the country having introduced subsidy policies for prefabricated buildings to promote industry development.

II. Standardized Construction Process

1. Foundation Treatment: Mark lines at the predetermined location, lay a moisture-proof layer and ground keels, and secure them with chemical anchors.
2. Wall Installation: Install the first wall at the corner and fix it to the foundation and adjacent walls; the installation method for the second floor is the same as for the first.
3. Floor Construction: Use trusses or 40mm keels to build a light steel floor system.
4. Roof Construction: It is recommended to use a crane to install the eaves and roof structure.
5. Envelope System: Nail OSB boards to the exterior surface of the walls for fixation, lay a waterproof and breathable membrane; lay asphalt waterproofing membranes on the roof, and finally install doors and windows.

III. Typical Wall Structure
The commonly used structure is a five-layer composite structure: the inner layer is thermal insulation rock wool, the middle is a light steel keel frame, and the outer layer is covered with high-strength cement pressure boards on both the inner and outer sides. This structure combines cost advantages with structural stability, making it the preferred option for cost-effective projects.

Prefabricated light steel structure houses achieve efficiency, environmental friendliness, and cost-effectiveness throughout the building's lifecycle through modular design, industrial production, and assembly construction, aligning with modern trends in building industrialization.