What is the spacing between the steel grid arches of the tunnel?

Installation distance. A tunnel is a building built underground, underwater or in the mountains, laying a railway or building a highway for the passage of motor vehicles. According to official website, the arch distance in the steel grating is the design and installation distance of the arch in the steel grating. The installation spacing of steel arches shall be installed according to the design requirements, the installation deviation shall be 5 cm according to the specification requirements, and the arch spacing shall be 50 ~ 60 cm. The upper and lower edges of the arch device are connected and combined into a whole by connecting ribs respectively.