In the Cable Tray Layout Preferences dialog box on the Routing tab, under Cable Tray Layout Rise/Run, click Angle or Fraction. For Rise/Run, enter the desired value, depending on the format selected. Note: The Rise/Run value is used as the default in the Add Cable Trays dialog. Cable tray (or cable ladder) systems are a popular alternative to electrical conduit systems, as they have an outstanding record for dependable service, design flexibility and cost savings in commercial and industrial applications. This standard ensures safety, durability, and performance across various environments. Slope is applied to cable tray in the Z direction of the current coordinate system in the drawing (typically the vertical direction for a building plan). Measure this distance along the straight tray. maintain spacing or to keep cables in place when the tray is ect the minimum bend ra-dius for cables as they exit the bottom of the cable tray. A rung spacing of 6 to 9 inches (150 to 230 mm) is preferable when the cable tray cont d for instrumentation and control applications that require.