Loading Results tab
The Loading Results tab displays information about forces acting on the selected pole and any attachments. Resultant moments, loads, forces, or tensions acting on each element of the selected pole are detailed in the Loading Results screen.
Overview of Finite Element Methods
For a majority of its analysis, Overhead Design Analysis (OHDA) uses finite element methods to calculate complex forces by breaking the force components down into small, finite pieces. The computational tool assures the most accurate force analysis possible.
Navigating Poles in Profile
- Cycle with arrows on either side of the 3D view canvas
- Cycle with arrows on either side of Plan view
- Click poles in Plan view to select
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Red text will highlight any equipment that exceeds its rated capacity. |
Capacity
Hover your cursor over any capacity percentage results (except for Cross Arm Combined Cantilever Loading) to open a popup with details of the calculation:
| Total Moment | The total amount of force acting on the equipment. |
| Overload Factor | A standards-based multiplier to Total Moment to act as a safety buffer. |
| Current Capacity | The amount of force the equipment should be able to withstand. |
| Reduction Factor | A standards-based multiplier to Current Capacity to act as a safety buffer. |
| Percent Capacity | The total percentage of capacity the equipment is under. |
| (Total Moment X Overload Factor)/(Current Capacity * Reduction Factor) = Percent Capacity | |
Pole Moment
| Heat Map / Displacement View Select | A button at the top of Pole Moment section. The default selection displays the pole with no visual indication of stress. Select the pole icon to turn on a heat map pole overlay that visually indicates where the pole is under the most stress, with calculated displacement visually deforming the heat map. OHDA shades the heat map from green to red by default, or white to black if the appropriate configuration value is set. Green or white indicate acceptable stress levels and red or black indicate where the pole's structural integrity is becoming compromised. |
| Height | The distance from ground that is experiencing the worst moment on the pole. |
| Moment | The maximum moment the pole experiences. |
| Capacity | The percentage of the pole's capacity to handle the applied forces. |
| Axial Loading | |
| Force | The total amount of downward force applied to the pole. |
| Capacity | The amount of axial force resistance left in the pole after calculating the sum of axial forces applied to the pole. |
Cross Arm Moment
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The vector of this force is represented as an orange arrow on the canvas in 3D view. |
Vertical (V)
Each assembly is listed with the amount of vertical force applied to its cross arm.
Longitudinal (L)
Each assembly is listed with the force experienced along the length of the cross arm.
Combined Cantilever Loading
The cantilever load across each cross arm is calculated and displayed. The cantilever force is derived by analyzing one half of the cross arm with the greatest load. The current capacity is also given with safety factors applied.
Bracket Loading
Insulator Forces
Name
Each insulator is listed in the form of [insulator name] [position] (inches from center)/[cable attached]. For example, Pin Right (42)/C-1.
Force
The amount of force the insulator experiences.
Capacity
The insulator's capacity in relation to the forces acting against it.
Guy Tensions
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The vector of this force is represented as a green arrow in 3D view. |
