When creating an axle modeling a structure, it consists of the first stages of them. The axes can be defined in the building plan at specific intervals and as their respective guide lines in both directions. In the SAP2000 program, it is very necessary that the axles are available correctly, so that the structure can be easily placed in the drawing.

The SAP2000 program allows the user to create axes according to the cartesian coordinate system (classical x-y-z coordinate system) and cylindrical coordinate system (consisting of angle and radius). In this article, the formation of axles according to the cartesian coordinate system mostly used will be explained in detail.

When the “New Model” option is clicked from the “File” menu in the SAP2000 program interface, the window shown in the picture below is reached. Here, by choosing the “Grid Only” section, a model consisting of only axles is started.

After the above operations are done in the SAP2000 program, a window will be opened where you can enter the axle information as shown in the picture below. The coordinate system (Cartesian / Cylindrical) mentioned earlier is selected at the top of the window opened with the name of “Quick Grid Lines”. There are 3 main sections in this window as explained in the picture:

1-) Number of Grid Lines : Axle numbers on the global axes (X-Y-Z) are entered into the system here.

2-) Grid Spacing: It is determined how many meter intervals the axle lines will be created.

3-) First Grid Line Location: The distances of the first axle lines to the global axis are determined.












Often the distance between the axles is not the same. For example, the A-B axis can be between 4 m and the B-C axis can be 5 m. For this reason, axle lines created in general lines as described above generally need to be rearranged. For editing, click “Coordinate System / Grids” option from the “Define” menu. The window shown in the picture below is displayed by selecting the “Modify / Show System” option from the window that opens.












The sections numbered in the picture above can be briefly explained as follows:

1-) In this section, changes to the axle lines can be previewed.

2-) One of the Ordinates / Spacing options should be activated in the Display Grid as section. If Ordinates option is selected, distances of axle lines to global axes are entered into the system. If the spacing option is activated, the distance between the axle line and the previous axle is entered into the system.

3-) If the “Hide All Grid Lines” section is selected, the axle lines in the model are not displayed on the screen. If the Glue to Grid Lines ” section is activated, the elements on the axle move with the axle when any changes are made to the axle’s position. It is generally recommended to activate this option.

4-) In this section, the distance or spacing values are entered to determine the positions of the axes on the X-Y-Z axes.

I hope the article was useful. I wish you good work…😊😊



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