1. The installation tools are:

Pile drivers, excavation tools, ramming tools, pliers, hammers and theodolites, level gauges, tape measures and other measuring tools. During the construction of the corrugated guardrail, the information of various facilities should be accurately grasped, especially the precise location of various pipelines buried in the subgrade. During the construction process, no damage to the underground facilities is allowed.

2. Column stakeout:

The stakes are staked out according to the design drawings, and the bridges, passages, culverts, interchanges, level crossings, etc. are used as the control points for distance measurement and positioning. When measuring, put the unit to the lowest position. The adjustment section can be used to adjust the spacing when setting up the column, and the spacing fraction can be handled by the distribution method. After the stakes are staked out, the foundation status of each post should be investigated. In case of underground communication pipelines, drain pipes, etc., or the depth of buried soil in the culvert items is insufficient. The column should be firmly buried in the soil, reach the design depth, and be perpendicular to the road surface. In general road sections,

the uprights can be driven in. The construction should be accurately positioned. When the drive is too deep, the uprights must not be partially pulled out to be corrected. All of them must be pulled out and re-intruded after the foundation is compacted. When the driving method cannot be used for construction, the drilling method may be used. If the filling height of the bridge and culvert structure cannot meet the driving depth required by the column, the concrete foundation fixing method shall be adopted.