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Advantages of bilateral guardrail: 1 The grid structure is concise, beautiful and practical; 2. It is convenient for transportation and installation is not limited by topographic relief; 3. It has strong adaptability, especially for mountainous, sloping and multi curved areas; 4. The price is medium and low, which is suitable for large area. Several problems needing attention in the installation of bilateral guardrail: 1. When installing bilateral guardrail, it is necessary to accurately grasp the data of various facilities, especially the accurate location of various pipelines buried in the subgrade. It is not allowed to cause any damage to underground facilities during construction. 2. When the column of the guardrail is driven too deep, the column shall not be pulled out for correction. When the foundation needs to be re rammed (Ben), it shall be driven again, or the position of the column shall be adjusted. When approaching the depth during construction, the hammering force shall be controlled.
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