Engineering Geodesy Control Work

Contents

Theoretical part

1. What is the composition and sequence of works at

engineering and geodetic surveys of linear type structures

Define the terms "alignment station" and "station"

2. Figure shows the structure breakdown diagram in the way

linear tick. When is it convenient to apply this method?

3. For what purpose are geodetic observations of deformations of buildings and structures performed? Name the main types of deformation

Practical part

Task

To the base of the station log alignment diagram, from the source data of your choice, create an alignment profile

Task

Perform calculations of design values and build them on the profile

Task

Based on the data of its version, calculate: circular curve elements; station name (LC) and (QC) for each angle of route rotation (check). Fill in the Straight and Curve Plan line on the longitudinal profile of the alignment

List of literature

Task Execution Order

1. We make constructions on a computer using the Compas3D v8 program, due to which the maximum possible accuracy is achieved and errors and inaccuracies characteristic of hand-to-hand constructions are excluded. We dissect the profile grid according to the specified width of each graph.

2. According to Table 2 of the methodological guidelines, we fill in column 5. We lay distances at a scale of 1:2000, fixing stations and plus points with vertical segments. Here, we sign the distances between adjacent profile points, and at the bottom - under the bottom line of the graph, which is called the station line - the values ​ ​ of entire stations.

3. We fill in column 4. It fits the elevation values of alignment points from the table, rounding them to 0.01 m.

4. By actual elevations, we find profile points. To do this, the actual elevations are placed vertically up from the conditional horizon line. The elevation of the conditional horizon line is 80 (it must be a multiple of 10 and selected with the same calculation so that the lowest point of the profile is at least 6-8 cm from it). The found profile points are connected with straight lines. Vertical is drawn from these points to the conditional horizon line. The cross-section rules are the same as the longitudinal one.

5. In the middle of column 1, we draw the axis of the alignment. According to the picket magazine, we are building a plan for the area adjacent to the route at a scale of 1:2000. In this case, we apply the elements of the situation, the angles of rotation of the route, mark the contours of the lands .

6. Above the profile line, the position of the fiducials relative to the alignment, their number, and elevation are indicated.

7. On a separate sheet, we draw a transverse profile on a horizontal and vertical scale of 1:200. Two graphs of grid 4 and 5 are filled here: the actual elevations and distances between the points of the cross line. The elevation of the conditional horizon line coincides with its elevation on the longitudinal profile .

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