Building verticality measuring method (Longitude and latitude measurement)
During construction survey, survey is often required! Determine the verticality of buildings, structures, construction electric measuring ladders, tower cranes, etc. The construction site is mostly narrow, and the conventional weft method can not be used for accurate measurement sometimes, so some simple and effective methods must be tried. The commonly used measurement methods are introduced as follows. 1、 Conventional methods. If you want to measure the perpendicularity of a building, first set up a theodolite at a distance of '($times the height of the building), aim at the top of the building, measure it with the theodolite, make a mark, measure the horizontal distance from the bottom, use the inverted mirror projection method to observe the two measurement sets, and take the average value.
