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In this tutorial, I will demonstrate how to work with parapets and how to include them
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in the Lightning Protection System.
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To create a parapet on this roof structure, we first select the structure and then go
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to the properties on the left, where we select parapet and yes.
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Now a parapet is placed on the roof structure and we can start adapting it according to
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our needs.
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The entire parapet will adapt to the changes we make if we have selected the complete roof
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structure.
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However, we can choose to adapt single parts by selecting them individually and either
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deleting them by pressing delete or adapting them in the properties window as before.
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Before we can integrate the parapet into the Lightning Protection System, we first have
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to define the parapet risk areas.
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We can do that by using this command here.
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For more information, please also see the tutorial on risk areas.
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Now we place a regular mesh on the roof surface.
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For the additional roof structure, we use a mesh without a ring.
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In order to integrate the parapet into the Lightning Protection System, we select it
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and change the lightning protection use from unsuitable to the status suitable.
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Keeping the control button pressed, we can select the other parts of the parapet and
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change the status as well.
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Now we can connect the mesh on the roof surface with the parapet by using the command add
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mesh down conductor with wire.
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Here we can choose where we would like to connect our down conductor, either choosing
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the nearest option and connecting directly to the parapet, connecting to the other mesh
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or the longest option, a connection to the earthing system.
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We can speed up the process by clicking right and choosing closest connection or last connection
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or pressing N or L on the keyboard.
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Pressing N connects the mesh with a clamp directly to the parapet.
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In addition, we can create a down conductor on the outside of the parapet.
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Again we can choose where we want to connect our down conductor.
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Once integrated into the Lightning Protection System, the parapet is included into the separation
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distance calculation and considered for the protection volume.
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Lastly we take a look on how to add a mesh cable segment on a parapet.
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Therefore we choose the following command and confirm the placement by clicking on the
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parapet.
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Pressing the spacebar repeats the last command and saves time.
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Here as well it makes a difference whether or not the parapet is marked as suited or
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unsuited for the Lightning Protection use if we make a connection to the mesh on the
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roof structure.
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For the suitable parapet, we have the option to connect the mesh with a clamp to the ring
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or to the parapet directly.
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If we choose the ring, an additional connection to the parapet will be made.
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For the unsuitable parapet, the connection can solely be made with the ring on the parapet.
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Here no connection to the parapet is possible.
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If you later on choose to make changes to the building or the parapet, it's important
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to delete the risk areas beforehand.
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The parapet will adapt to the new building structure, however, risk areas defined before
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the change will not automatically adapt.
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You'll find another, more detailed tutorial on risk areas in our e-learning platform.
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That's it for this tutorial, thanks for watching.
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