AutoCAD Civil 3D Tip: Take Control of the Corridor Section Editor UI

The Corridor Section Editor is a powerful design tool. It provides the ability to view and edit a Civil 3D corridor by displaying a step by step walk through of cross sections in a model. Here are a few tips to help you take control over the display and user interface of this tool.

Many display settings can be accessed by selecting the View/Edit Options button on the Section Editor tab of the Ribbon.

View/Edit Options Button


One UI feature of the Corridor Section Editor is the Adaptive Grid. This feature dynamically adjusts the frequency of the horizontal and vertical gridlines when zooming in or zooming out inside a section viewport.

Corridor Section Editor with Adaptive Grid

This behavior can be turned off to force the gridlines to display at a static interval regardless of zoom level.

Select the View/Edit Options button on the Section Editor tab of the Ribbon. The View/Edit Corridor Section Options dialog will display. Set Adaptive Grid to Off.

Adaptive Grid:  Off

Many other display settings can be controlled through this dialog box such as color, text, and Code Set Style display.

Another display item that can be controlled is viewport configuration.

Viewport configuration can be accessed by selecting the Viewport Configuration button on the Section Editor tab of the Ribbon.

Viewport Configuration Button

In the Corridor Section Editor: Viewport Configuration dialog there are settings for number of viewports, size of viewports, and what is displayed in each viewport.

Corridor Section Editor:  Viewport Configuration Dialog

We can also control what is or is not displayed in the section view by selecting the Display Objects button on the Section Editor tab of the Ribbon.

Display Objects Button

The Display Objects in Section Editor Dialog controls which objects from the model are shown in the section editor. Items can be checked/unchecked to control display.

Display Objects in Section Editor Dialog


Bonus tips:

 Zoom Control: To keep the section viewport from zooming to extents when cycling through sections, center your section in the viewport, zoom to your desired zoom level, and select Zoom to an Offset and Elevation from the Zoom dropdown on the Section Editor tab of the ribbon.

Zoom to an Offset and Elevation Button


Grid Linetype: You may open the Corridor Section Editor to find the grid showing as a dashed line or some other undesired linetype.

Corridor Section Editor with Undesired Linetype

This can be easily fixed. The viewport grid inherits it’s linetype from the current layer.

Close the Corridor Section Editor. Change the current layer to one that has a continuous linetype. Reopen the editor and the gridlines will appear continuous.



Bryan Sullivan

Bryan Sullivan

Bryan joined the EnvisionCAD team in October 2013. He provides a variety of CAD Management services. As a CAD Technician, he provides expertise in AutoCAD and Civil 3D production, support and development services. He has been using AutoCAD and Autodesk products since 1998 and has used his knowledge of CAD software and internet technology to provide drafting and design support and CAD management services for engineering firms and design-build contractors. Bryan has training in mechanical design and has gained experience in the civil, environmental, and structural engineering fields while working on a variety of projects for state, municipal, and private clients. His project history includes 2D and 3D CAD modeling of waterworks and wastewater systems, transportation systems, floodplain and stormwater management design, landfill design and operation, earth retention design, deep foundation systems and much more. He is skilled in creating plans and documentation for the entire engineering process as it evolves from the initial survey and design, on to the permit process, through the creation of engineering plan sets, cycling through changes made during bid preparation and review, and finally ending with construction and as-built drawings. He is an avid researcher and has never been reluctant to leverage a new technology or evaluate a new solution in order to solve an engineering or production issue.

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