Creating an attic truss certain conditions must be met before an attic truss can be built.
Build attic room home designer pro.
For the purposes of this example we used a 30 x40 structure.
Select build wall straight exterior wall and create a basic enclosed 4 wall rectangular structure by drawing your walls in a clockwise fashion.
The structure should be sufficiently wide to allow for a loft and attic spaces the loft area must be on a living floor and have attic rooms on both sides separated by knee walls a flat ceiling in the loft area and a floor below steep.
The attic floor does not support rooms or living space of any kind not even rooms specified as attics.
So if you want to create a loft or storage area in the attic of your model you will need to create it on a numbered floor not the attic.
If you need to add a new floor to your model select build floor build new floor from the menu.
From the menu go to build wall straight exterior wall then click and drag in the wall the same length as the deck railing below it.
Select the 2nd floor room that was edited previously and click the open object edit button to return to the room specification dialog.
If you are using home designer pro check the box next to build roof planes.
Click ok to close the dialog and automatically generate a roof.
In home designer pro this setting is located near the center of the dialog rather than towards the top.
If the plan design calls for a roof structure that is built up to a specific height on knee walls you will need to adjust the height of the second floor prior to building roof planes or rebuilding the roof.
Certain conditions must be met before an attic truss can be built.