Poles

Load on poles has three components: tension from supporting wires, wind on the wires, and wind on the pole. Since the key is to resist the pole breaking off at the groundline, all pole loads are computed at some moment-arm above groundline.

You can select a pole class, height, and material to display the maximum resisting moment on the pole. Once you supply conductor span lengths and angle, the calculator displays the pole's total bending moment. You can then select guying options.

The Poles frame is visible on all Structural Analysis tabs except Ruling Span.

Open the Structural Analysis tool.
Click the Transverse Pole Strength tab.
Enter the pole attributes. If you selected a pole, right-clicked it, and selected Structural Analysis, its height and class attributes should be reflected in these fields.
Add conductors in the Conductors section using the Multiple Span Length tool or the Add Span tool.
Select the "Depth Adjusted for Equipment" checkbox to account for related objects (such as switches and transformers) when calculating. The Setting Depth field will be adjusted to accommodate features on the pole. This value may not be larger than the pole height.
Enter a value for the Pole top attachment height. This is the height of the pole top attachment. This value adds to the total height of the pole (pole height plus attachment height).
The Pole fields impact the Wind Moment on Pole, Maximum Resisting Moment, Total Bending Moment, and Total Transverse Load on Pole results.

The following calculation results fields are visible in the Poles section of Structural Analysis. These fields are highlighted in red when capacity is exceeded.

The Wind Moment on Pole is the bending moment caused by the wind blowing against the surface of the pole. This calculation uses the Loading District value (Overcapacity Factors) and Conductor Size/Material values from the Conductors Grid.

The Maximum Resisting Moment is the capacity of the pole, based on its size and material, to withstand the loads such as conductor tension and wind, which would tend to break the pole when applied. This calculation uses the Height, Class, and Material values.

The Total Bending Moment is defined as the bending moment due to loads from conductor tension, wind on wires/conductors, and wind on the pole itself. If the total bending moment exceeds the total resisting moment of the pole, the Maximum Resisting Moment text box will be highlighted in red.

The Total Transverse Load on Pole is the resultant force of conductor tension (due to line angle) and conductor wind load applied to the pole.

The Critical Buckling Load is the maximum buckling load that the pole can withstand.

The Actual Buckling Load is the actual buckling load caused by guying and device weight.

The Pole Top Deflection shows (in percentage) how much the pole is deflected from its center. If this value exceeds the threshold value set in Designer Options then this box turns red.