Floor Thickness of Prefabricated Slab Houses

The floor thickness of prefabricated slab houses varies depending on the type and application scenario, commonly ranging from 10mm to 300mm. Here is a detailed classification description:

1. Ordinary Cement Prefabricated Floor Slabs
The thickness typically ranges from 60mm to 120mm, with the specific value directly related to the floor span. For example, when the span is 3 meters, a recommended thickness of 80mm to 100mm is suggested. These slabs are mostly used in ordinary residential buildings or small structures, requiring basic load-bearing capacity.

2. Steel-Frame Lightweight Prefabricated Slabs
The thickness ranges from 80mm to 150mm. By incorporating an internal steel frame to enhance structural strength, they are suitable for scenarios where self-weight is a concern, such as industrial plants or temporary buildings, allowing for a reduction in overall weight while maintaining load-bearing capacity.

3. Reinforced Truss Prefabricated Floor Slabs
The thickness ranges from 100mm to 300mm. The reinforced truss structure significantly improves the slab's bending resistance, commonly found in large-span buildings (such as shopping malls and stadiums) or high-rise buildings, and is preferred when substantial loads need to be supported.

4. Special-Purpose Prefabricated Slabs

• Livestock Manure-Draining Slabs: With a thickness of 50mm to 80mm, the design focuses on drainage and ventilation, mostly used for flooring in livestock farms.
• Cable Well Covers: With a fixed thickness of 50mm, they need to meet the requirements of easy opening and basic protection.
• Thin Prefabricated Slabs: With a thickness of 10mm to 40mm, they are suitable for non-load-bearing partition walls or decorative layers, such as indoor lightweight partitions.

5. Old Buildings and Common Specifications
Some old houses, due to lower construction standards, may have prefabricated slabs as thin as 50mm (5 centimeters), requiring structural safety assessments. In modern buildings, 120mm and 150mm are more common standard thicknesses, balancing cost-effectiveness and practicality.

Selection Recommendations:
In actual engineering projects, the thickness should be comprehensively determined based on the building type, load requirements, and regulatory standards. For example, residential floor slabs typically use 100mm to 120mm, industrial buildings may require more than 150mm, while temporary structures or lightweight partitions can use thinner specifications. During the design phase, references should be made to standards such as the 'Code for Design of Concrete Structures' to ensure structural safety and durability.