Export to Overhead Design Analysis

Use the Export to Overhead Design Analysis tool to designate specific poles, assemblies associated with those poles, and conductors for export into Overhead Design Analysis (OHDA) for evaluation. This button does not appear on a toolbar by default. You may need to add it using the Customize menu.

TIP: You do not need an OHDA license to use this tool. When you open OHDA, however, the application will check for a license.

Exporting from ArcMap to OHDA

  1. In ArcMap, zoom the map to the area that contains the poles, assemblies, and conductors you want to export to OHDA.
  2. Click the Export to Overhead Design Analysis tool. This opens the Export to OHDA form and changes the cursor to crosshairs.
  3. Using the Export to OHDA selection tools, target the items you want to export.
  4. Click the Export button. OHDA will open with a scenario built from the materials you selected.
  5. Fix any errors that OHDA finds in the scenario before clicking the OHDA Calculate button.  See the Overhead Design Analysis section for more information about these tools.

Export to OHDA User Interface

The Export to OHDA Tool's interface is split between two lists of components - Poles and Conductors. Click the names at the top of the form to change lists. The current list is highlighted in blue and underlined.

The numbers with blue square backgrounds designate the order of items on export to OHDA. The numbers for poles also appear on the map. The order of poles can have an impact on your scenario in OHDA, so it is important to ensure this order is correct. See the Pole Order section at the end of this topic for more information.

Adding components: See the Export to OHDA Selection Toolbar table below.

Deleting components: Click the red X next to the component you want to delete. Deleting a pole will also remove any associated assemblies. Click the Clear All button to remove all selected components from both lists.

Reordering a list: Click an item in the list and drag the mouse to rearrange the order.

Highlight list components on the map: Click a list item to briefly highlight the feature in ArcMap.

Export to OHDA Selection Toolbar

Icon

Tool

Description

Point Selection

Click to select components one at a time. When active, the icon is highlighted in dark gray. On the map, use the  cursor to select individual components for export. The tool will highlight components in green when you hover the cursor over them. Making this tool active will deactivate Box Selection.

Box Selection

Click to select a group of components at once. When active, the icon is highlighted in dark gray. On the map, click and drag the mouse to draw a selection box over the items you want to include in your selection. Use the Pole Ordering Options menu to control the default numbering of poles. Making this tool active will deactivate Point Selection.  

Pole Ordering Options

When using Box Selection, the Options menu is where you set the default numbering of the poles you add to the selection. Select Left to Right, Right to Left, Top to Bottom, or Bottom to Top to control the default numbering of multiple poles in a group selection. See the Pole Order section following this table for more information.

Pole Select Toggle

Click to cycle through active and inactive states. When active, the icon is highlighted in dark gray. Set to active to allow the export tool to snap to poles.

NOTE: Assemblies are automatically selected with their associated poles.       Setting the pole select toggle to active and the cable select toggle to inactive will make selection of the poles' small point features easier.

Cable Select Toggle

Click to cycle through active and inactive states. When active, the icon is highlighted in dark gray. Set to active to allow the export tool to pick up cables.

NOTE: When snapping to features for export to OHDA, the tool uses the OVERHEADSTRUCTURE and OVERHEADCONDUCTOR model names. The cursor will snap to any layers with either of these model names assigned.

Reactivate Selection

Sometimes the operating system will take control away from ArcMap to run another service. Upon return, you may not be able to add to your selection. In such cases, click this button to resume normal operation of the export tool.

Clear All from Selection

Use the Clear All button to remove all items from the current selection. This removes both Poles and Conductors. To remove individual components, click the red X next to the component you want to delete.

Export

The Export button initiates the transfer of the items the user has selected in ArcMap to OHDA. This opens OHDA and loads the selected features into it.

Pole Order

 

As you select poles, they are numbered both on the map and in the Export to OHDA form. The order of poles is important because it will impact the analysis.

In the example below the poles are numbered 1, 3, 2. OHDA analyzes the poles in numerical order. In the case below, OHDA would place the poles in order (1, 2, 3), which differs from the design on the map.

You must either select poles in the correct order, set the correct pole ordering option in the tool's Options menu, or arrange the list in the Export to OHDA form. To change pole order, click and drag a pole entry in the form and move the mouse up or down the list. A red bar will indicate the cursor's current location in the list. Release the button to place the pole in the correct order.  

Placeholder Assemblies

 

Placeholder assemblies are used in certain situations when exporting to OHDA. These assemblies are higlighted red and labeled as Placeholder on the Poles tab in OHDA. You must manually swap these placeholders for actual assemblies in OHDA before you can perform any calculations.

No assembly associated with support structure in ArcMap

OHDA will create placeholder assemblies with enough insulator attachment points to accommodate all imported cables.

Fewer assembly attachment points than cables

OHDA will bring in the assemblies from ArcMap, but will also create placeholder assemblies with enough attachment points to accommodate all imported cables. For example, a user exports four cables from ArcMap along with assemblies that have only three insulators. The assemblies and cables are imported into OHDA. Because the assemblies do not have enough attachmnet points, placeholder assemblies with four insulators are also created in OHDA.

More assembly attachment points than cables

OHDA will bring in the assemblies and cables from ArcMap as normal. Remaining insulators will be left empty.

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