Conditional Part 2 - Cut or Fill (depth options)

Continuing exploring the power of Conditional Cut or Fill subassemblies, design options will be driven by depth.  Conditionals work as an “if/than” statement, providing options for design.  

Different results can be achieved by attaching several of these subassemblies to the same point, then leveraging the Minimum and Maximum Distance fields.  The Civil 3D Help file can provide more insight.

First, when using multiple conditional subassemblies on the same point; the power is driven by the values set in the Min/Max Distance boxes.  In the example below, four (4) conditional subassemblies are used on each side.  The Layout Width and Grade fields are also modified in each to space out the design and create a more legible web layout.

“Cut” values (below) surface:

• Depth of: 0 -1 shoulder full depth
• Depth of: 1-100 valley curb and link

“Fill” values (above) surface:

• Depth of: 0 -1 curb and sidewalk
• Depth of: 1-100 guard rail

With a Surface Target set in the corridor, the depth for both the left and right fall under value of 1.0, as noted by “depth” dimensions:

• Left is in a “Fill”: adds curb with sidewalk.
• Right is “Cut”: adds full depth shoulder.

With a Surface Target set in the corridor, the depth for both the left and right fall exceeds value of 1.0, as noted by “depth” dimensions:

• Left is in a “Fill”: adds link with guardrail.
• Right is “Cut”: adds valley curb and shoulder.

Again, a roadway assembly type example shown, however these ideas can be applied to other type of designs situations: Waterways, Rails, Parking, Etc…

About the Author

Civil Applications Expert<br><br>As an Applications Expert, Leo is responsible for supporting, training and implementation of software for survey and civil engineering professionals. He has more than 19 years of experience helping large and small, public and private clients in the eastern United States.

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