监控杆

监控杆必须有避雷针及良好接地最好加引线导入地下（建议导电不走杆体），其接地电阻小于4欧；方向与行车道垂直（或按工程师要求）地脚螺栓作为主筋；

Must have the best good grounding and lightning monitoring bar lead into the underground (not in the conductive rod body), the grounding resistance less than 4 o;Vertical direction and driveway (or required by the engineer) as the main anchor bolt reinforcement;