After you finish defining Roof Truss - Geometry click the Upper chord tab or the Lower chord tab. Using the options on either tab, you can assign bar profiles and types of bar families to the bars of chords of the generated truss. In addition, it is possible to determine the method of positioning profiles.
Under Profile rotation, the method of profile positioning can be determined for I-sections and rectangular pipes (see the drawing below).
Specify additional parameters:
- Mirror - enables defining a position (top or bottom) of some asymmetric profiles with respect to the horizontal plane (see the drawing below).
- Profile location in relation to plate - enables defining a position of a profile with respect to the gusset plate in the truss node (at the front of the plate, at the back of the plate, at the center of the gusset plate. Profiles are fixed to the gusset plate by welding one of the walls to the plate (positions at the back and at the front) or by setting a bar in position onto the plate after notching the profile beforehand (position - center).
Profiles available on the selection lists are those defined in the Profile List dialog. To add a profile to the list, click 
. The Profile list dialog displays, where you can select a profile.
Profile families available on the selection lists are those defined in the Family Manager dialog. To add a family to the list, click 
. The Family manager dialog displays, in which you can select a family.