To Work With Alignment Design Checks

To create a design check

To create a design check, set up a mathematical formula that uses existing alignment sub-entity properties.

1. In Toolspace, on the Settings tab, expand the AlignmentDesign Checks collection.
2. Right-click the entity type collection for which you want to create a design check. You must create separate design checks for lines, curves, spirals, and curve groups (tangent intersections). Click New.

   Alternatively, you can expand the entity type collection for which you want to create a design check, right-click an existing design check, and click Copy.

3. In the Design Check Editor dialog box, enter a name and description for the design check.
   BestPractice: The name of the design check should be similar to the formula you enter in the Design Check field. When a design check is violated, only the design check name is displayed, and not the minimum acceptable value. If the formula is in the design check name, it is easier to correct the violation.
4. Click Insert Property. Select a property from the list.

   The property appears in the Design Check field.

5. Add functions, constants, and logical operators to complete the design check.

   Because design checks return either a true or false value, they must contain one of the following logical operators: > (greater than), < (less than), >= (greater than or equals), <= (less than or equals), != (not equals), = (equals).

   Note: Do not insert anything into the { } brackets that surround the property fields.
   • Click Insert Function to insert mathematical functions like TAN.
   • Use the calculator buttons or click in the Design Check field and use your keypad to enter numbers, constants, and mathematical operators like * (multiply) or / (divide).
   Note:

   For a complete list of operators and functions, see Design Check Editor Dialog Box.

6. Click OK.
   Note: To apply a design check to an alignment or profile, it must be saved in a design check set.

To edit a design check

1. In Toolspace, on the Settings tab, select the Design Checks collection that contains the design check that you want to edit.
2. Ensure the Toolspace item view is visible.
3. Right-click a design check in the item view. Click Edit.
4. Edit the design check using the Design Check Editor dialog box.

To create a design check set

1. In Toolspace, on the Settings tab, expand either the AlignmentDesign Checks or ProfileDesign Checks collection.
2. Right-click the Design Check Sets collection. Click New.
3. In the Design Check Set dialog box, on the Information tab, enter a name and optional description of the design check set.
4. In the Design Check Set dialog box, on the Design Checks tab, from the Type list, select a design check type.
5. From the <type> Checks list, select a design check.
6. Click Add.

   The design check is added to the design check set and appears in the table in the dialog box.

7. Repeat Steps 4 through 6 to add other design checks to the design check set.
8. If you are creating a profile design check set, use the Apply To column to specify the type of curve (sag, crest, or both) to apply each curve check.
9. Click OK.

To edit a design check set

1. In Toolspace, on the Settings tab, expand either the AlignmentDesign Checks or ProfileDesign Checks collection.
2. Right-click the design check set that you want to edit. Click Edit.
3. Use the Design Check Set dialog box, on the Design Checks tab, to edit the design check set.
4. Click OK.