The problem of correctly modeling a truss implies two aspects: geometrical composition and static scheme.
In the "Model library" window, the user can select different predefined frames or trusses.
After choosing the truss type, the next characteristics must be defined:
2. Import of lines in DXF format
The trusses can also be created in Advance Design by importing lines in DXF format and converting them into linear elements.
This method is fast and useful if the user already has the truss geometry from an architectural plan.
After the import of the geometry in Advance Design, the lines must be converted into linear elements. Select the imported lines and use the "Convert lines to linear elements" command on the "CAD Modifications" toolbar.
3. Modeling of the truss using Advance Design CAD functions
The truss can also be created using a more direct approach by manually modeling the truss element by element.
In Advance Design a series of CAD functions are available: copy, move, rotate, symmetry, subdivide and others. No matter what method is used by the user, the results will be the same:
Static scheme conformation
This release, rotation in truss's plane (Ry) of the linear elements, is defined in the properties window of each linear element for each end.
Note: The number of the element's extremity is always given by the orientation of the local x-x axis (in red).