Next, we will apply the distributed loads to the top horizontal beam.
With the Selection Shape Point or Rectangle and Selection Select Lines commands active, click and drag to draw a box around the top line of the model. Be careful not to select any of the adjacent diagonal elements.
Click Setup Beam Loads Beam Distributed Load.
Type -10 in the Magnitude field.
Select the Z radio button.
Click OK. The model displays as shown in the following image.