What are the steps of the motion signal tower tilting
I. What are the longitude observation methods
1 the point method. At the time of the observation, a measure facility should be located at the bottom of the observation point with a reading-scale equivalent. (a) when each station is projected with a latitudinal, the horizontal transfer of points between the top and bottom of each pair shall be measured by a reverse mirror, and the horizontal (slash) and the direction (slash) of the point shall be obtained by adding the vector
2 horizontal angle measurement. For towers, circular buildings or components, observations per station should be directed at a point of zero, where the direction values of the points and the distance from the centre to the bottom are measured and the horizontal transfer of the top centre relative to the bottom centre is calculated. Rectangular buildings, with a corner between the top and the bottom, or between the upper and the lower, directly observed at each station, to calculate the horizontal fraction and direction of the entire or layer by measured angle and distance
3 method of association. The selected baseline shall consist of the optimal configuration of the observation point, with an angle of 60° to 120°. The horizontal shift may be calculated by means of the directional deviation of the coordinates calculated directly by the difference between the two-cycle observed direction values, or by calculating the coordinates of the points per cycle, followed by the horizontal shift calculated by the coordinates。
Ii. Step of oscillation observation of mobile towers
1. Set up at latitude。
2. Point the "ten" thread from the lens of the latitudinal to the top of the tower, with a vertical angle reading of 0 and a fixed horizontal bolt。
3. Transfer the camera to taki and mark the point on the cross. The lens is then moved horizontally to record the vertical angleb for the calculation of the distance of the instrument from the tower and the calculation of the tower height h。
Take taki to the center。
5. Measure the distance between the taki hub and the cross-crystal marka。
6. Calculating tower h = l*tgb (l: horizontal distance from instrument to tower, measured)。
7 the gradient of the calculation tower = a/h per cent。
