| When the roof plan is correct, roof planes can be locked to prevent accidental changes. The Build Roof dialog has a Lock Roof Planes check box to prevent accidental rebuilding. You can also protect roof planes from accidental changes by locking the Roof Planes layer in all layer sets. See "Layer Display Options Dialog".
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A selected roof plane can be edited in 2D and 3D using edit handles, edit toolbar buttons, and the Roof Plane Specification dialog.
In the Roof Plane Specification dialog, the 3D orientation of a roof plane is defined by three height values and one pitch value. The Ridge/Top, Baseline, and Fascia Top heights can be specified or locked and used as a pivot point. Pitch determines the slope of the roof plane. See "Roof Plane Specification Dialog".
The shape of a roof plane can be edited with the mouse in the same way that a CAD polyline is edited. See "Editing Closed-Polyline Based Objects".
You can make a step, or jog, in the edge of a roof plane by selecting it, clicking the Break Line 
edit button and then clicking on the roof edge. See "Break Line".
After moving a corner edit handle, it may be difficult to make an edge parallel to an eave or a wall. Use the Make Parallel/Perpendicular 
edit button to align a roof plane edge with a wall, another roof plane edge, or another object with a straight edge. See "Using Make Parallel/ Perpendicular".
| If opposite sides of a roof section are parallel, selecting one edge automatically gives you a dimension line. If you do not see that dimension line, the sides are not parallel.
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Sometimes, what appears to be a single, straight roof plane edge may actually be broken into two or more edges, which can affect your ability to align the edge properly.
A single edge will have three edit handles; if more than three display, more than one edge is present. An extra handle can be removed removed manually by dragging it into an adjacent handle. You can also use Build> Roof> Fix Roofs 
. See "Fix Roofs".
When Bumping/Pushing 
is enabled and CAD Stops Move is checked in the Roof Plane Specification dialog, a roof plane will bump against another roof plane, CAD or CAD based object as it is moved. Roof planes cannot push these objects, however. See "Bumping/Pushing".
Classroom Design Project Training Video: Drawing and Connecting Roof Planes
Two roof planes can be joined at adjacent edges in both 2D and 3D using the Join Roof Planes edit button. To use this tool, you must first identify which edges of the roof planes can extend to meet at a ridge, hip, or valley. The program will try to join the two planes along the line where they intersect whenever possible.
If the roof planes are not close enough, or their shape is not correct, you may need to align their edges, remove extra edges, or move them closer.
When roof planes adjust, the program joins the planes at the proper location and the adjacent edges extend or contract to remain connected. If the joining of the two will completely eliminate or reverse an adjacent edge, the connection cannot be made.
The Move to be Coplanar edit button allows you to move the selected roof plane to be coplanar (in the same plane) with the next selected roof plane. You can use this tool in both 2D and 3D views. The results can be easily seen in a cross section view. The two roof planes must have parallel baselines for this to work.
Roof planes can be raised or lowered in the Roof Plane Specification dialog. Begin by locking the Pitch, then change the value of the Baseline Height. See "General Tab".
You can also raise or lower roof plane heights in the Transform/Replicate Object dialog. See "Transform/Replicate Object Dialog".
This warning dialog displays when you attempt to snap the corner or an edge of a roof plane near the edge of another roof plane that does not match vertically. The Change Roof Pitch or Height dialog gives you the option to move the roof plane vertically, or pivot it about a point and change the pitch.
In this case, the current roof plane would have to raise its pitch or height in order to meet the second roof plane at the corner that you moved.
The amount of vertical displacement between the two roof planes.
Pivot Roof Plane About - Select which part of the roof plane to use as pivot point when pitch is adjusted to meet the other roof plane.
Raise/lower (no pivot) - Select this option to maintain the current pitch and raise or lower the entire plane to connect the roofs. This may affect plate heights of the walls below.
To prevent this dialog from displaying, check Don't show again during this session. The dialog does not display again until you have terminated and restarted the program.
Click Yes to make the selected change so the roofs meet. The roof plane either changes pitch or is raised or lowered.
Click NO to leave the roof plane unchanged. The roof planes will not meet vertically. You should usually choose No unless you have a specific reason to adjust the roof plane this way.
A roof plane baseline can be selected like any line and edited. If the baseline coincides with a roof edge then select that roof edge and press the Tab key to select the baseline. The status bar tells you when the roof plane baseline is selected.
| If the roof plane baseline is moved in floor plan view, its height does not change. This means that moving a roof plane baseline toward the ridge lowers the roof plane.
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The baseline angle can be set in the Roof Plane Specification dialog. See "Roof Plane Specification Dialog".
Delete the entire roof quickly by clicking the Delete Roof Planes 
tool.
You can also select any roof plane or group of roof planes, then press the Delete key or click the Delete 
edit button to delete it from the plan.
The Delete Objects dialog allows you to delete all roof planes at once. See "Delete Objects Dialog".
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edit button or press the 2 key.
