What is the installation spacing of the steel support of the tunnel 50mm
The number of not less than the number of calculation of steel arch. For example, steel arch spacing design for 50cm, the first product installation distance is 55cm, when the second products will be changed to 45cm, so the cumulative calculation.
According to the specification, installation of +5, -5, but the general requirements not only go online, now some requirements to a total of zero error, that is in accordance with the design of steel arch control quantity, to the final detection according to the length calculation of steel arch number
Steel tunnel support installation spacing 50 refers to the two steel support installed when the distance between the installation distance of steel arch installation according to the design requirements
