1. The installation of the column must be carried out under the premise of reinforcement of the soil shoulder, and it should be installed in bridges, passages and large-span culvert structures. In the process of installing guardrails in the main project, the installation of the columns should be treated first. Blue plate and anchor bolts.

  2. Make preparations for construction and detailed construction organization. Installation tools include: pile driver, excavation tool, compaction tool, pliers, hammer and theodolite, level, tape measure and other measuring tools.

  3. During the construction of the highway guardrail, the information of various facilities should be accurately grasped, especially the precise position of various pipelines buried in the roadbed. During the construction process, no damage to the underground facilities is allowed.

Column stakeout:

  1. Loft the columns according to the design drawings, and use bridges, passages, culverts, overpasses, level crossings, etc. as control points for distance measurement and positioning. When measuring the distance, put the unit to the lowest position.

  2. When setting out the column, the adjustment section can be used to adjust the spacing, and the distribution method can be used to handle the number of spacing fractions.

  3. After the uprights are staked out, the foundation status of each upright position should be investigated. In case of underground communication pipelines, drain pipes, etc., or the depth of the buried soil at the top of the culvert is insufficient, the position of some columns should be adjusted or the concrete foundation fixed method should be adopted.