Transmission Towers
Components

Transmission Towers Components
Set of components to model transmission towers
– Tower Layout
– Arms and arm connections
– Bracing and bracing connections and cuts
– Leg plate connections
– Base feet details
– Leg connections
– Unfolding tools
Model template including all default setting to
easily start working with the components
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Tower Layout
This component defines the transmission tower legs
and arms
Arms need to be defined within this component, chose
the arm component and attributes file in the arm tab
The arms subcomponents (Arm1 and Arm2) cannot be
modified directly unless the tower is exploded. To modify
them load a new attribute file into the tower component
and modify
– The arm components attributes file need to be predefined earlier
and saved in order to be visible in the list
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Arms
Arm diagonal brace uses arm vertical brace component
plus bottom and top members as input
– You must create arm vertical braces before you can create
arm diagonal braces
These components support channels for the bottom
member of the arm
Arm horizontal uses the crossing dummy
member as input
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Arms connections
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These components create connections for the arm’s
ends
– The input takes requires a dummy member

Bracing
In these components is important to
set the orientation of the component
in the General tab before inserting the component
The main tab contains and image indicating
the correct orientation of the component
Input points are define in the center line
defined by the tower legs, not in the legs
themselves
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Bracing
Cross bracing Type 2: component
is created from the bottom of the
picked legs not the picked point
– Offset needs to be used if you want to add several cross bracing
between the same legs
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Connections
These are meant to connect the
bracings to legs or other bracings
The correct input order can
be found in the picture tab
These components show a back mark
symbol (yellow arrow) to indicate the back
of the angle. This helps achieve
the correct orientation, you can
modify the orientation in the dialog
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Extra cuts
These components are meant to create cuts for the
bracings
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Leg plate connections
Use these when a connection plate is
needed
Input sequence can be found in each
component picture tab
Component Leg Plates input position has to be picked in
the back of the leg, also the orientation needs to
be the one indicated in the dialog
10

Leg plate connections
Leg bent plate uses an existing plate as
an input to create an extra plate along the bracing plane
The braces are not bolted to the extra plate
– E.g. you can use Bracing cross 19 to bolt the braces to the plate
The extra plate is part attached to the input plate and can
be unfolded using the Unfold bent plate component
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Base details
These components are different details for the bottom of
the legs
Orientation of the components has to be the correct one
as indicated in the picture tab
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Leg connections
These components use dummy members
as input
Orientation of the components has to be as indicated in
the dialog
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Unfolding tools
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Unfolded bent plate is a component that will create an
unfolded version from a bent plate that has been created
using attach parts.
– Maps the detailing.
– You also need to choose an input position to place the unfolded
plate.

Unfolding tools
Unfolded bent plate drawing
– Creates a drawing for an unfolded plate
– The input should be the unfolded plate created by the previous
component
– It will show the bend lines in the drawing, including the angles,
and making difference between folded up (coming out of the
screen) and folded down (into the screen)
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Notes
Some of the components use dummy members as inputs.
These are used for orientation purposes.
– All these dummy members are colored yellow, and you can easily
filter them by name DUMMY or by their material which is
Concrete_Undefined. This way they won’t show up in single part or
assembly drawings
Components need to have the proper orientation.
– The ones with this requirement will always have a bitmap indicating
the correct orientation
Most of the components are designed to work only with angles
and some with channels. Angles should be symmetrical, e.g.
equal leg lengths
Notice that the inputs in many cases are part of a component,
you will need to have the switch ”Select objects in
components” on, or use scrolling to change the selection level
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Thank you!