- Placing a Spot Elevation
- Changing the Spot Elevation Style
- Placing a Spot Elevation Relative to an Existing Spot Elevation
- Placing Multiple Spot Elevations Automatically Using Grid Placement
- Placing Spot Elevations Along a Straight Line or Polyline
- Placing One Callout With Multiple Elevations
- Assigning a Z Elevation to a Spot Elevation
- Slope Callouts
- Correcting Scale With Spot Elevations
Our Spot Elevation tool allows you to place elevation callouts directly into your drawing. You can also use this tool to automatically determine a Spot Elevation in relation to an existing one, given a slope between the two.
Spot Elevation callouts are now multileaders (MLeaders), allowing for easier editing and moving.
Placing a Spot Elevation
Open our Spot Elevation tool:
F/X Site ribbon, Spot Elevation flyout
Site Dimension toolbar
F/X Site menu, Spot Elevation option
or type FX_PlaceSpotElevation in the Command line
When you open the Spot Elevation tool, you'll be prompted to place an Arrow point.You can either:
- Select a point in your plan and place an elevation callout manually.
- Select an existing contour line with a Z elevation. The Spot Elevation tool will read that elevation and enter it automatically into the Spot Elevation callout you place.
Placing a Single Spot Elevation Manually
Click a point in your drawing to assign it with a Spot Elevation.
The Spot Elevation dialog box will open. Enter an elevation for the Spot Elevation callout you want to place in the Point 1 field.
If you want, you can enter an abbreviation for the elevation callout in the Abbrev field. The abbreviation will appear at the end of the callout.
Spot Elevation abbreviations usually consist of two letters that define the point. For instance FG=Finished Grade, TW=Top of Wall, TP=Top of Paving, etc.
The Point 2 and Point 3 fields allow you to place multiple elevations in one callout. If you just want to enter a single elevation, use the Point 1 field.
Move the mouse to determine the angle of orientation to the Spot Elevation callout and the length of its leader. Click to set the angle and leader length.
Spot Elevations are no longer set to 45-degree increments.
Move the mouse to adjust the orientation of the Spot Elevation marker.
Continuing to move the mouse moves the Spot Elevation marker.
While moving the mouse for Spot Elevation orientation, you can also drag it away from the initial elevation point to make the elevation leader line longer to avoid text or other objects.
Moving the mouse away from the elevation increases the length of the leader line.
After determining the orientation and the length of the leader, click place the Spot Elevation.
You'll now see the Spot Elevation marker in your drawing.
Here's an example:
Assigning a Spot Elevation to a Contour Line
To assign a Spot Elevation to a contour line in your drawing, open the Spot Elevation tool and, when prompted to select an arrow point, click to select a contour line with a Z elevation. The Spot Elevation tool will read that elevation and automatically apply it to the elevation callout.
Accounting for Elevation Changes in an Irrigation Design
You can use Spot Elevations to reflect elevation changes in your irrigation designs – which in turn can affect pressure rates, pipe sizes, etc. Any head or valve will automatically look for the NEAREST Spot Elevation and assume the head or valve is at that elevation. Because of this feature, we recommend placing Spot Elevations generously when using them in an irrigation design. You can choose to use Spot Elevations when sizing your lateral pipes. More information >
Changing the Spot Elevation Style
Selecting a Spot Elevation Style
Our Spot Elevation tool allows you to choose from a number of callout styles.
The currently selected style is shown as a thumbnail in the Style area of the Spot Elevation dialog box. To select a new style, click this thumbnail.
Changing the Text Style
You can use the Block Editor to confirm which Text Style is being used for your Spot Elevations. Our software uses the Text Style Callout Light as the default style for Spot Elevations.
If needed, you can edit the Callout Light style using the Text Manager.
As with any of our default Text Styles, keep in mind that editing Callout Light will change the style of ALL text placed using our software that is assigned the Callout Light style.
If you've already placed some Spot Elevation callouts and need to edit the text (such as changing the size or color), you'll also need to make the change in the MLeader style.
Follow our steps to edit the MLeader styles.
Select the option to Modify the current MLeader Style.
Select the Content tab in the Modify Multileader Style. You can then make the necessary changes to the style.
The example to the right shows the menus you can use to change the Text color and Text height.
Click OK when finished.
Changing the Multileader Style or Color
You can also change the style of the Multileader (MLeader) that forms your Spot Elevation callouts' leaders, arrows, and text. For example, you might want to change the color of the text, leader, and arrow so they all match. For instructions, see our MLeader Styles documentation section.
Further Customizing Spot Elevation Callouts
If you don't want to use the MLeader style Spot Elevation callouts, you have a couple of customization options:
Correcting Scale With Spot Elevations
If your Spot Elevation text is coming in too big or too small in relation to the rest of your drawing, you're most likely facing a scaling issue. If this is the case, follow our steps to correct scale in callouts.
Placing a Spot Elevation Relative to an Existing Spot Elevation
After you've placed one Spot Elevation callout, you can place additional callouts and have their elevations calculate automatically based on the slope from another existing elevation.
If you have at least one existing Spot Elevation in a drawing, when you place another Spot Elevation the Command Line will indicate: Arrow point, [Relative to existing/Continue from last/Grid placement].
You can either:
- Type R to make the next point relative to another existing Spot Elevation. The cursor will turn into a pickbox, which you can use to select one of your existing Spot Elevation markers. The new Spot Elevation will have its elevation measured relative to the one you selected.
- Type C to make the next point continue from the last point entered.
After you type R or C, the Slope dialog box will open.
1. Slope Type options:
- Option to include a slope Percentage. If you select this option, you'll enter the percentage in the text field (example: 1.5 for 1.5%).
- Option to enter a slope Ratio rather than a percentage.
2. Slope Direction options: Select whether you want the Spot Elevation callout you're about to place will reflect a slope Up or Down from the previous one.
3. Slope Form options:
- Slope follows a straight line: Place Spot Elevation callouts along a straight line set by dragging the cursor.
- Slope follows a polyline: Place Spot Elevations along an existing polyline in your drawing.
4. Place Spot Elevations every: Select this option to automatically place Spot Elevation callouts in a set spacing pattern along the straight line or polyline selected above.
If you select this option, you can enter a number of feet or meters for the spacing pattern, as well as apply the pattern to either Horizontal distance or Vertical distance.
For example, you create a new spot elevation and type C to continue from the previous elevation. Type a slope percentage “Up” from the first spot elevation (example: 1.5).
A rubber band line will appear, originating from the first Spot Elevation.
Click to place the second Spot Elevation, then click again to orient it.
The second Spot Elevation will be calculated automatically based on the slope and length.
Not only will the new elevation be calculated based upon the percent of slope and distance from the first elevation, but a “dimension” line will appear between the two points with the distance and the percent of slope indicated. This dimension is drawn on a non-plot layer. The value of this information on a grading design will help you visualize your design at a glance.
Setting the Number of Decimal Places in Your Spot Elevations
When setting Spot Elevations manually (i.e., one at a time), you have control over the number of decimal places that will appear in the Spot Elevation callouts. When you place Spot Elevations relative to each other, the number of decimal places will be controlled by the Precision you've set in the Units dialog box. See our Set the Number of Decimal Places (Precision) for Your Drawing Units page for instructions.
Placing Multiple Spot Elevations Using Grid Placement
With the Grid Placement feature, you can place several Spot Elevations automatically in drawings with existing contours with elevations assigned to them (for example, a drawing you receive from a surveyor or civil engineer).
In the following example, we'll place multiple Spot Elevations in the contour drawing pictured to the right.
Open the Spot Elevation tool, and type G for Grid Placement.
The Maximum Grid Spacing dialog box will open. Enter a spacing value in feet or meters for the Spot Elevations (example: 10).
In our example, the Spot Elevations will be placed 10 feet apart. You can adjust this number if you want more Spot Elevations spaced closer together, or fewer Spot Elevations spaced farther apart.
The Command line will prompt you to set the Upper left corner. Click to set the upper left corner of the window you'll draw around the area where you want to place the Spot Elevations.
The Command line will then prompt you to set the Lower right corner. Click to set the lower right corner of your window.
Once you complete the window, the Spot Elevations will fill in automatically at the spacing you set. Allow a few minutes for the Spot Elevations to fill in.
The boxed section below shows a small section of the Spot Elevations in our example.
Not happy with the number or spacing of Spot Elevations? Use the Undo command to delete the Spot Elevations you just placed. You can then run the Spot Elevation tool again and set a different spacing value.
Placing Spot Elevations Along a Straight Line or Polyline
The Spot Elevation tool allows you to place Spot Elevations along a straight line that you can set by dragging the cursor, or along an existing polyline in your drawing.
Open the Spot Elevation tool, and type either R to be relative to another elevation, or C to continue from the previous elevation. After you type R or C, and select an existing Spot Elevation callout, you'll see the Slope dialog box. Here, you can select options to place your Spot Elevation callouts along a straight line or polyline.
These options will only work if you've already placed a Spot Elevation callout in your drawing.
To place Spot Elevations along a straight line determined by the cursor, select the Slope follows a straight line option.
If you want to set an exact spacing pattern for the Spot Elevation callouts you place along the line, check the Place Spot Elevations every option. You can then enter a spacing pattern (example: 10 ft.) and select whether you want the distance to be measured horizontally or vertically.
Here's an example of a line of Spot Elevation callouts placed relative to an existing one:
If you place a Spot Elevation near the end of a polyline, you can continue this Spot Elevation along that polyline. This polyline can be a combination of continuous lines and arcs.
To place Spot Elevations along a polyline in your drawing, type R or C when placing a polyline. Select the existing Spot Elevation callout, then select the Slope follows a polyline option in the Slope dialog box.
Use the pickbox to select the polyline.
The Spot Elevations will be filled in.
Placing One Callout With Multiple Elevations
The Spot Elevation dialog box allows you to add elevations for up to three points. You may want to place a single callout showing multiple elevations in several situations, including:
- Top / bottom of wall or curb
- Rim elevations and inverts for catch basins or manholes
- Finish grade vs. soil grade
To place a single callout showing multiple elevations, enter the elevations in the Point 1, Point 2, and Point 3 text fields, with the highest elevation at Point 1. If only adding two elevations, use the Point 1 and Point 2 fields.
In our example, we'll enter a top-of-wall elevation of 253.00 in the Point 1 field with an abbreviation of TW, and a bottom-of-wall elevation of 252.49 in the Point 2 field with an abbreviation of BW.
Assigning a Z Elevation to a Spot Elevation
Need to coordinate with Civil 3D, a surveyor, or with a 3D modeling program like SketchUp, Rhino, or Revit? We've added the ability to assign a Z elevation to each Spot Elevation callout.
Type FX_SPOTELEVATIONZALIGN in the Command line and press Enter. This command will take the elevation inside the Spot Elevation callout Mleader and change the Z elevation of the associated block.
Running the command a second time will update the Z elevations.
In engineering the ability to set Z elevations to Spot Elevation callouts, we've tapped into an AutoCAD feature where an MLeader snapped to a block will associate with that block. This is how the Mleader knows which block whose Z elevation it needs to change. Autodesk is still developing this feature, and it can be finicky. If you edit the Z elevation of the Spot Elevation callout block manually, the MLeader will disassociate, and FX_SPOTELEVATIONZALIGN will no longer change the callout's Z elevation. Also, if the Spot Elevation was originally snapped to a point on another line, the MLeader will disassociate after the first Z Align, and won’t change to accommodate any later edits to the MLeader elevation.
After placing a Spot Elevation callout, avoid changing the Z elevation manually in the Properties panel. Doing so will break the connection to the callout. Also, be aware that Spot Elevation callouts snapped to a point can only be Z aligned once.
We’re looking for different ways to accomplish this same feature within our Spot Elevation tool to prevent this issue, but for now we're able to release this feature using this method and its associated limitations.
Slope Callouts show the direction and percentage of slopes in your drawing. For more information, see our Slope Callouts documentation page.
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