Tilt measurement is for measuring the deviation value ΔD of the main structure of the architecture, theodolite projection is generally adopted for measurement of the deviation value ΔDTheodolite projection, the observation methods are as below:In the above formula, i refers to the main structure of the architecture ∆D refers to the value(m) that the top observation point deviate from the bottom observation point H refers to the height of the architecture(m) α refers to tilt angle(°)
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