Basic information about construction and repair work
Having set the theodolite in the working position, they lead a vertical thread to the edge of concrete along the silos forming below and, lifting the pipe, check the verticality of the wall. If the edge of the wall leaves the vertical thread, then there is a deviation from the vertical.
This is checked in the second position of the circle to avoid the influence of instrumental errors. To determine the linear value, the angular displacement is measured in two positions of the circle and the deviation from the vertical is calculated.
According to the results of the audit, they make up an executive scheme.
Clear marks are applied on the brackets (if the edges of the brackets are clearly visible, then you can do without marks). Then choose oriented points. The distance to them should be no less than from theodolite to the far bracket. Tagging points can be tags applied to any local objects, the safety of which guarantee the entire period of concreting of the structure.