Next, we will delete the Roof Live Loads which are the Uniform Loads shown in red:
1. Select the Delete icon which is located on the CAD Tool Bar.
2. Verify that Uniform Loads or Uniform&Concentrated is visible in the Select Filter at the
top of the screen.
3. Select the 100 plf load and the 20 plf load top chord loads and then press .
4. If prompted, "Delete the load from ALL load cases?", select the No button.
The Loading Diagram for the Dead & Floor Load load case is shown below.
Verify that the modified load case is correct before proceeding.
The unbalanced load cases must also be modified to account for the extra load added as a
result of the dormer. You should review each existing unbalanced load case to determine how
the Top Chord Live Load has been distributed. Copy the modified Attic Std. Ld. Load case and
then modify the loads to create the new unbalanced load case. Repeat for each existing
unbalanced load cases.
As a final step, you can delete the original dead and unbalanced load cases. This step is
optional as leaving those load cases does not negatively affect the design of the Attic Girder.
