The c-channel on top of the taller vertical members must extend to the outside edges of the tubes (plus an additional 15 mm on each end to allow for a fillet weld).
- Zoom in on the model, as shown (upper portion of one of the tall vertical members).
- On the ribbon, click
Design tab
Frame panel
Lengthen/Shorten
. - In the Lengthen - Shorten Frame Member dialog box, click Both Ends.
- Select the c-channel.
We know the rectangular tube is 150 mm wide and that the c-channel currently extends to the center of the tubes. Therefore, the extension distance is (150/2) + (15) = 90.
- Enter 90 mm in the Extension field.
- Click Apply.
The program adds 90 mm to both ends of the c-channel.
- Click Cancel.