Method for measuring perpendicularity of vertical building

A measurement method and building technology, applied in the determination of fixed angles and other directions, can solve problems such as factors affecting measurement accuracy and unsafe hanging lines

Inactive Publication Date: 2015-01-14

CHINA 22MCC GROUP CORP

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AI-Extracted Technical Summary

Problems solved by technology

[0002] At present, in the construction of chimneys and high-altitude openings, due to high-altitude operations, conventional hangin...

Abstract

The invention relates to a method for measuring the perpendicularity of a vertical building. The method comprises the steps of observing a left bus of an upper opening of a chimney through a theodolite, locking the vertical direction of the theodolite, and adjusting a horizontal angle to be zero degree; moving the theodolite to a right bus of the upper opening of the chimney in the horizontal direction, and recording the horizontal angle alpha 1 at the moment; dividing 2 from the horizontal angle to obtain an angle beta1 of the middle position, and horizontally moving the theodolite to the angle beta1, wherein the point where the angle beta1 is positioned is a middle point of the upper opening; locking the horizontal direction, releasing the vertical direction, introducing the point to the 2/3 position of the height of a person at the lower part of the chimney, and recording the point as a point 1 on the chimney by a marking pen; observing a left bus of a lower opening of the chimney through the theodolite, obtaining the middle point of the lower opening of the chimney by the former method, and recording the point as a point 2; and measuring a horizontal distance L, which is a perpendicular deviation of the chimney, between the point 1 and the point 2 by a steel plate ruler. The method disclosed by the invention can safely, quickly and accurately measure the perpendicularity of the vertical building during construction process control and completion acceptance.

Application Domain

Fixed angles setting out

Technology Topic

Steel platesTheodolite +6

Image

Examples

Experimental program(1)

Example Embodiment

[0016] The present invention will be described in detail below with reference to the drawings and embodiments, and the purpose is only to better understand the content of the invention.

[0017] See figure 1 The method for measuring the verticality of the vertical building described in the embodiment is carried out in the following steps:

[0018] (1) Preparation for measurement.

[0019] One theodolite (or total station), one tripod, one steel ruler, and one marker.

[0020] (2) Measurement steps.

[0021] ① Find a place with a full view of the chimney and set up the tripod, and adjust the theodolite (total station) to be level.

[0022] ②Look at the left bus 5 of the upper mouth 3 of the chimney through the theodolite (total station), lock the vertical direction of the theodolite (total station), and adjust the horizontal angle to 0 degrees. Move the theodolite (total station) horizontally to the right bus 6 of the upper mouth 3 of the chimney, and record the horizontal angle α1 at this time.

[0023] ③ Divide this horizontal angle α1 by 2 to get the middle angle β1, move the theodolite horizontally to this angle β1, the point of this angle is the upper mouth midpoint 1, lock the horizontal direction, release the vertical direction, and lead this point to At the position of 2/3 of the height of the person under the chimney (for people to measure), use a marker to record this point on the chimney, which is point 1.

[0024] ④Look at the left bus 5 of the lower port 4 of the chimney through the theodolite (total station), lock the vertical direction of the theodolite (total station), and adjust the horizontal angle to 0 degrees. Move the theodolite (total station) horizontally to the right bus 6 of the lower port 4 of the chimney, and record the horizontal angle α2 at this time.

[0025] ⑤ Divide this horizontal angle α2 by 2 to get the angle β2 at the middle position. Move the theodolite horizontally to this angle β2. The point of this angle is the middle point of the lower mouth 2. Lock the horizontal direction, release the vertical direction, and lead this point to The position on the horizontal line with point 1, and use a marker to record this point on the chimney, which is point 2.

[0026] ⑥Measure the horizontal distance L between point 1 and point 2 with a steel ruler. L is the vertical deviation of the chimney.

[0027] Matters needing attention in the above measurement:

[0028] ①When looking at the left and right busbars, you must go to the extreme edge;

[0029] ②The theodolite (total station) must be kept in the vertical direction while moving horizontally;

[0030] ③Point 1 and point 2 must be on a horizontal line.

PUM

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