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.
Exporting from ArcMap to OHDA
- In ArcMap, zoom the map to the area that contains the poles, assemblies, and conductors you want to export to OHDA.
- Click the Export to Overhead Design Analysis tool. This opens the Export to OHDA form and changes the cursor to crosshairs.
- Using the Export to OHDA selection tools, target the items you want to export.
- Click the Export button. OHDA will open with a scenario built from the materials you selected.
- 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
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 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.