To create a design check, set up a mathematical formula that uses existing alignment sub-entity properties.
Use the ToolspaceSettings tab to create and manage design checks. You must create separate design checks for lines, curves, spirals, and curve groups (tangent intersections). To apply a design check to an alignment, you must add it to a design check set .
Independent entities are checked separately from sub-entities in tangent intersection groups. To apply the same design check to both entity types, create a separate design check for each type. For example, to enforce a minimum radius for all curves, create a curve design check for use with the independent curves and a tangent intersection design check for use with spiral-curve-spiral groups.
See Also
- In Toolspace, on the Settings tab, expand the Alignment
Design Checks collection. - Right-click the entity type collection for which you want to create a design check. 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.
- In the Design Check Editor dialog box, enter a name and description for the design check.
Best Practice
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.
- Click Insert Property. Select a property from the list.
- 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).
- 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).
NoteFor a complete list of operators and functions, see Design Check Editor Dialog Box.
- Click OK.
Note
To apply a design check to an alignment or profile, it must be saved in a design check set. For more information, see Creating a Design Check Set or Editing a Design Check Set.