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Steel pole parameters can be found in the Steel pole tab of the Poles library.

The general section contains both read only and writable fields.

This section defines the shape of the steel pole. 

The pole strength of a steel pole is defined by the Yield Stress. This is used to populate the derived field Breaking Tip Load. Note, Yield Stress is equivalent to the Modulus of Rupture used for a wood pole.

This section defines the flexibility of the pole which controls how much it will deflect when a load is applied. For more information, see <a href="https://knowledge.neara.com/en/articles/10220784-pole-elasticity-shear-modulus-and-poisson-s-ratio">Pole Elasticity, Shear Modulus and Poisson's Ratio</a>.

This section controls the tubes of the steel pole. Note, Lap Factor and Lap Length are additive. The top row in the table is the top tube of the pole and the bottom row is the bottom tube of the pole.

The diagram shown in the Poles library for steel poles will show the calculated overlap of the steel tubes in green. This is additive of the Lap Factor and the Lap Length.

The Graphics Texture controls the appearance of the pole in perspective view to be either <code>galvanized</code> or <code>weathering</code>.

Steel Poles

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Field Name	Description
Name	User entered name of the pole.
Length	Read only length of the steel pole. This is derived from the length of the tubes and the overlap between them
Material	Read only - automatically set to `steel`
Default Sink Depth	Default embedment depth pole will be installed at
Mass	Read only - calculated based on geometry and the density data
Density	Density of the material
Drag Coefficient	Drag coefficient used in wind calculations used to account for pole resistance to wind
Price	Price field used for cost estimates
Tags	Tags used for different strength reduction factors

Field Name	Description
Shape	Options are `Round`, `4F`, `6F`, `8F`, `12F` and `16F` (where F stands for Face)
Tip Diameter	Diameter at the tip of the pole Note the diameter is measured flat to flat Changing the Tip Diameter will also change the Bottom Diameter but keep the Taper constant
Bottom Diameter	Diameter of the base of the pole Note the diameter is measured flat to flat Changing the Bottom Diameter will also change the Taper but keep the Tip Diameter constant
Taper	Percentage taper is the % increase in diameter per unit length (e.g. 1% taper over 1000mm would be an increase in diameter of 10mm) Changing the Taper will also change the Bottom Diameter but keep the Tip Diameter constant

Field Name	Description
Breaking Tip Load	Read only - derived from Yield Stress and the geometry of the steel pole
Yield Stress	Maximum stress the steel pole can handle at which it is considered 100% loaded

Field Name	Description
Length	Length of the steel tube
Thickness	Thickness of the steel tube (assumed constant along the length of the tube)
Lap Factor	Calculated overlap of two tubes based on the diameter at the joint (e.g. two tubes joining where the diameter is 50cm and the lap factor is 1.5 will have an overlap of 75cm) Note, Lap Factor and Lap Length are additive
Lap Length	Overlap of the steel tubes This is an alternative way to enter the overlap to the Lap Factor Note, Lap Factor and Lap Length are additive

Steel Poles

General

Pole Shape

Pole Strength

Pole Elasticity

Tubes

Appearance