Installation Method and Steps for the Fence Net 1. Site Preparation Before starting the installation, it's essential to clear the area of any trees that don't have a reserved value, as they may interfere with the system’s full implementation. From an environmental perspective, most damage to vegetation on the slope is temporary. Since the system is open, remaining stumps can regrow through the mesh, forming new branches. 2. Removal of Loose Soil and Pumice It's important to remove loose soil and pumice from the slope that could affect construction safety. However, in some cases, complete removal isn’t necessary if the system can be safely installed. In fact, in certain situations, leaving some debris might even make the flexible protection system more cost-effective or efficient. 3. Line Release Work This step involves marking the positions of anchor holes according to the design spacing. Typically, the base point is set at the slope foot, and each anchor position is measured progressively toward the top and across the slope. During this process, keep the following in mind: - When positioning the anchor hole, try to use existing natural depressions or irregularities on the slope to minimize manual excavation. - If the rock or soil at the designated position is too loose or contains large stones, consider adjusting the anchor position slightly within the allowable range to avoid drilling risks. 4. Drilling the Anchor Holes - Use a lightweight handheld rock drill to create the anchor holes. - Drill from the top down to ensure safety and allow for the removal of any remaining loose material. - Before drilling, chisel a small dimple at the entrance of the hole to help align the support rope properly. This ensures the exposed sleeve of the anchor is close to the slope surface. In some cases, such as when the hole is already in a natural depression or between rocks, this step may not be necessary. 5. Anchoring Section The anchoring section typically consists of two parallel steel wire ropes. For a φ16 steel wire rope, the flat diameter is 32 mm, so the hole should be at least 10 mm larger. If equipment is limited, two smaller "human-shaped" holes can be drilled at the same location, allowing each wire rope to be anchored separately. 6. Bolt Installation - Installing steel wire rope anchors is similar to standard mortar anchors. It’s crucial to clean the hole and center the rod to ensure proper adhesion and grip. - Due to the flexibility of the wire rope, manual mixing of grout is sufficient for depths up to 3 meters. For deeper installations, mechanical injection is recommended. - Never leave the mortar inside the hole, and ensure the exposed outer sleeve of the bolt remains visible for the support rope installation. 7. Support Rope Installation - The support rope installation is straightforward. One end of the rope is passed through the exposed ring sleeve of an anchor and secured with a rope clamp. Then, the rope is threaded through the sleeves of adjacent anchors until reaching the end. A tensioner capable of at least 10kN is used to tighten the rope, and the final end is fixed with the same type of clamp. - While theoretically, the length of the support rope can be unlimited, excessively long ropes can create difficulties during tensioning due to the presence of dimpled holes. To avoid excessive tension, it's generally recommended to limit the maximum length of a single support rope to around 30 meters. - If vertical and horizontal support ropes have different specifications, install them in the same row or column. Only when the specifications match can you consider turning corners to reduce waste and unnecessary connections. - For road fence systems, since the support rope doesn’t need to be under high tension, it can be made as long as possible, provided it’s easy to handle and install. - Ensure the support rope is installed after the anchor mortar has cured for at least three days. 8. Grid Hanging To improve construction safety and reduce cutting work, the grid should be hung from top to bottom. Each net should overlap by one or two mesh widths and be tied with ties spaced approximately 1 meter apart. The net blocks should be as flat as possible and closely attached to the slope. Although the grid is usually installed after the support rope, it’s often more efficient and safer to install it first if conditions allow. This approach can also enhance overall safety, even though it may slightly increase the difficulty of installation.
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Interior use High Speed Doors are designed as room separation doors inside factory and warehouse. No need facing big wind pressure, such door can be made very light weight with low cost.
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