How Thick is the Finished Layer of a Prefabricated House?

The thickness of the finished layer of a prefabricated house primarily depends on the thickness of the prefabricated floor slab, commonly ranging from 60mm to 300mm, varying according to material type, application scenario, and load-bearing requirements. The following provides an explanation from the perspective of different types of prefabricated floor slabs:

The thickness of ordinary cement prefabricated floor slabs typically ranges from 60mm to 120mm, with the specific value directly related to the floor span. For example, when the span is 3 meters, it is recommended to use a thickness of 80mm to 100mm, which can meet structural strength requirements while controlling material costs. These slabs are mostly used in rural self-built houses or low-rise buildings due to their low cost and convenient construction, making them widely applicable in small to medium-span scenarios.

The thickness range of steel-framed lightweight prefabricated slabs is 80mm to 150mm. They use a steel frame as the load-bearing structure internally, covered with lightweight materials, ensuring structural strength while reducing the slab's self-weight. These slabs are suitable for scenarios with high load requirements but a need to control the overall building weight, such as multi-story industrial plants or commercial buildings. Their thickness selection requires comprehensive consideration of span, load, and building functional requirements.

The thickness range of steel truss prefabricated floor slabs is 100mm to 300mm, representing the largest thickness span among all types. They have pre-embedded steel trusses internally, significantly enhancing the slab's bending and shear resistance, making them suitable for large-span, high-load scenarios, such as large public buildings or high-rise prefabricated residential buildings. For example, the thickness of large composite slabs in prefabricated residential buildings typically ranges from 130mm to 150mm, meeting structural safety requirements while facilitating construction and installation.

The thickness of commonly specified prefabricated floor slabs generally ranges from 60mm to 180mm. Small prefabricated slabs (60mm to 80mm) are mostly used in low-rise buildings, such as rural self-built houses; large prefabricated slabs (120mm to 180mm) are widely applied in industrialized construction buildings, such as composite slabs in prefabricated residential buildings. Generally, 120mm and 150mm thicknesses are the most common for prefabricated slabs, with 100mm thickness being less frequently used but customizable according to specific needs.