2 Drag the end controls to change the arc length.
3 To change the arc radius while keeping it concentric, click Changing radius keeps concentric
4 Drag the middle control.
Cutting Arc Walls
You can cut square or rectangular openings into an arc wall by editing the elevation of the wall. See
Wall Shapes or Openings
1 In either a 3D or elevation view, select an arc wall.
2 On the Options Bar, click Opening.
3 Sketch rectangular openings in the arc wall.
4 When you finish, click Modify to end the command.
As you sketch the openings, permanent dimensions appear. If the wall has a top constraint set to a level,
dimensions appear from both the top and base constraints. If the wall has a top constraint that is explicit,
dimensions appear from the base constraint only.
Structural Wall Properties
You can modify many properties for structural walls, as shown in the following two sections:
on the Options Bar.
Leave this option deselected to retain existing end conditions, such as end point location or
tangency to a straight wall.
on page 591.
The Rectangles tool becomes active.
Structural Wall Properties | 845
Defining
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