Create Building Block
- Last UpdatedJan 12, 2026
- 3 minute read
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To create a building block, select Create > Building Block on the Building Block Tasks window to display the Create Building Block window.

The Create Building Block window allows the user to set the main attributes, location and geometry of the Building Block, and create the corresponding Building Block (BBLOCK) element in the database.
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Main Attributes of Building Block |
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Name |
Enter an appropriate Name. |
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Description |
Enter an appropriate Description. |
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Function |
Enter an appropriate Function. |
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Area |
Set the required Area using the spin box. |
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Location |
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Angle from Y axis |
Set angle using the spin box. |
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Position |
There are three menu options which allows the user to pick the position graphically. |
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X |
Enter the value of the X - coordinates. If required, select the checkbox to lock the position. |
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Y |
Enter the value of the Y - coordinates. If required, select the checkbox to lock the position. |
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Z |
Enter the value of the Z - coordinates. If required, select the checkbox to lock the position. |
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Offset |
Clicking
Click |
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Geometry |
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Default height |
Set the default height for the Building Block. |
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Define Building Block geometry |
Displays the Define Building Block Boundary window. |
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Create Building Block |
Creates a BBLOCK element in the database and displays the Modify Building Block window. |
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Back to Building Block tasks |
Displays the Building Block Tasks window. |
Define Building Block Boundary
The Define Building Block Boundary window allows the user to select a boundary shape, and set the dimensions and origin point for the boundary.
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Clicking Define Building Block geometry on the Create Building Block window displays the Define Building Block Boundary window.

Shapes
Allows the user to select a shape for the boundary from the drop-down list. The options available to the user are dependant on which shape is selected.
Dimensions
Enter values in the appropriate boxes.
Origin
Origin point
Set using the spin box.
Derive Methods
Pick Corner Points
Allows the user to graphically pick the corner points. The option varies depending on which shape is selected.
Define Boundary
Sets the boundary and displays the Create Building Block window.
Return
Returns the user to the Create Building Block window.
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Clicking Define Boundary returns the user back to the Create Building Block window, which updates to indicate that the geometry has been defined.

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Clicking Create Building Block creates the BBLOCK element in the database, commits the window settings to the database and displays the Modify Building Block window which allows the user to edit the position and attribute data.
displays the Offset window which allows the user to enter offset values for the building
block.
