[Haichuan Construction Technology] Construction techniques and methods for anti-static raised flooring, as well as key points for technical control
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Anti-static raised flooring is a type of movable flooring with anti-static properties; it is typically made by covering a metal or composite substrate with an anti-static coating, with its bottom supported by brackets and beams to create a raised structure. It is used in areas where protection against static electricity interference or discharge hazards is necessary, such as computer rooms, data centers, laboratories with precision instruments, semiconductor manufacturing facilities, and medical equipment rooms. I. Advantages: 1. Effectively releases static electricity to protect electronic devices ； 2. Elevated structures facilitate the installation and maintenance of cable conduits ； 3. The floor can be removed flexibly to accommodate site adjustments ； 4. Some products possess fire-resistant, moisture-proof, and wear-resistant properties. II. Disadvantages: 1. High initial installation cost ； 2. Overhead structures have limited load-bearing capacity, so they are not suitable for placing heavy equipment ； 3. The installation process requires high standards, and issues such as poor flatness and inadequate grounding are likely to occur ； 4. Metal brackets or beams may rust over time due to prolonged use. III. Construction techniques and methods: 1. Substrate preparation: Clean the surface to ensure it is flat, dry, and crack-free; level it with cement mortar if necessary ； 2. Marking with string: Use the design drawings to mark the positions where the brackets should be installed (usually at intervals of 600mm×600mm or 800mm×800mm) ； 3. Install the bracket: Place the bracket and adjust its height (usually 100–300 mm), then secure it with expansion bolts ； 4. Install crossbeams: Fix the crossbeams at the top of the brackets to form a grid framework, and adjust their levelness ； 5. Laying the floor: Start from one corner of the room, place the floorboards within the grid of beams, adjust them to be level, and ensure that the gaps between adjacent boards are uniform (≤1mm) ； 6. Grounding: Connect the brackets and beams to the room’s grounding system to ensure the grounding resistance is ≤1Ω ； 7. Edge treatment: Fill the edges of the room with edge-trimmed flooring or cut flooring to fit against the walls.
IV. Key points for technical control: 1. The flatness error of the base layer ≤ 2 mm/2 m； 2. Strictly control the bracket spacing according to the design ； 3. The horizontality error of the crossbeams shall be ≤1 mm/2 m, and the horizontality error of the floor surface shall be ≤2 mm per room diagonal ； 4. All metal components are reliably grounded, with the grounding resistance meeting the specifications ； 5. Gap between adjacent floors ≤ 1mm ； 6. Conduct a load-bearing test after installation (uniform load ≥ 1000 N/㎡, concentrated load ≥ 300 N). V. Acceptance requirements and standards: 1. Appearance: No scratches, damage, or deformation on the surface; the veneer is not detached, and the edges are neat ； 2. Size: The specifications meet the design requirements, with adjacent gaps ≤ 1mm ； 3. Levelness: The levelness error of the floor surface shall be ≤ 2 mm per room diagonal (refer to GB 50209-2010) ； 4. Grounding: Ground resistance ≤ 1Ω (refer to GB 50174-2017) ； 5. Load capacity: Uniform and concentrated loads meet the design requirements ； 6. Function: The floor can be removed flexibly, the brackets and beams are secure, and the pipelines in the overhead space are neatly arranged. VI. Improvement suggestions: 1. Material optimization: Develop new composite materials such as carbon fiber and aluminum alloy to reduce costs and enhance load-bearing capacity and corrosion resistance ； 2. Structural improvement: Modular brackets and beams are used to simplify the installation process ； 3. Intelligent upgrading: Integrated sensors for real-time monitoring of the overhead space environment and floor condition ； 4. Cost control: Optimize production processes to reduce the processing costs of metal floors ； 5. Enhanced adaptability: Adjustable-height brackets are designed to meet various overhead requirements ； 6. Environmental improvements: Use eco-friendly veneer materials free of formaldehyde to reduce emissions of volatile organic compounds.
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