Creating and working with structural profiles with BullAnt
There are a number of ways in-which you can define and place structural profiles within BullAnt.
The catalogue component within BullAnt provides access to a wide range of standard sections from around the world to use in your projects.
By right-clicking on the catalogue profile component you can view and select all the available profiles from Geometry Gyms standard library. The image below shows typical country section profiles available.
When working with most profile types, the output in grasshopper will be a IFC profile representation (typically in JSON) format when wired into a grasshopper panel.
If you want to access the plain curve geometry of a profile components allow to cast that geometry to a Curve component (to represent the outline) or a Brep component (to represent the area) to allow you to bake, manipulate or reference geometry.
Casting a Profile
A number of structural programs allow for list section inputs. This may allow for the program to choose which section is best suited when undertaking a design. You also may want to develop your own way of allowing profiles or sections to be chosen from a list of different inputs.
The ggSearchSectProp component allows you to use star notation to select a list of associated profiles from the typical Geometry Gym catalogue database. The image below denotes a typical example. You can use the catalogue as a reference for knowing which prefix to use in order to find the appropriate sections.
Selecting a range of Profiles/Sections
There are a set of components under the BullAnt Panel which allow you to create user defined sections for typical structural profiles that are not included in the Geometry Gym standard library for typical shapes. The image below shows some of the typical profile generation types available available.
BullAnt Custom Profiles
It is also possible to generate your own Profile Library of different shapes. For example you may have a library of custom size Circular sections which are not available within the standard Geometry Gym catologue.
It is possible to add user defined profiles to the standard Geometry Gym Catalogue profiles component. In order to provide user defined profiles to the ggCatalogueProfile component add a .ifc profile library file to the following location.
Instead of having to rebuild these for each grasshopper script it is possible to load these into the standard library folder
One of the easiest ways of Generating a Profile Library .ifc file is to use grasshopper. You can use Grasshopper to import excel files to generate these libraries as well. For more information on how to generate a user library using Grasshopper visit this page:
Note that the default insertion axis for a profile is the origin point (0,0,0) on world XY plane. By taking a top view of the profile you can understand where the centroid placement of the section will be when applying a profile to a given curve.
You can modify this placement on a curve by defining the cardinal insertion point when assigning to a curve. If you need a specific insertion point you can transform (move) the profile curve in relation to the X-Y plane to suit the location.
The ggProfileOnCurve on curve component allows you to place a profile along a curve at one or a multitude of curve parameters while providing a vector orientation for the profile.
The ggSweepProfile sweep profile on curve allows you to create a swept surface representation of a structural member along a curve.