Use the backout tools in QTO to refine takeoff data by subtracting from a previously calculated measurement or count. In this
exercise, you use the Polyline Backout Takeoff tool to remove a portion of the carpet area measurement to account for the
void created by the curved wall.
- On the canvas, zoom in to the curved wall in Room 14.
- On the toolbar, click (Polyline Backout Takeoff).
- On the Contextual Tools palette, click , and draw an arc that traces the curved wall, as follows:
- For the first point of the arc, specify the intersection of the curved wall and the wall on the left.
- For the second point, specify the midpoint of the curved wall, as shown.
- For the last point of the arc, specify the intersection of the curved wall and the wall on the right.
- On the Contextual Tools palette, click , and draw a line segment that closes the semicircle.
When you complete the backout, the backout area is subtracted from the carpet area, and the Area value in the Workbook is
The area measurement displayed on the canvas is updated as well.
- Click (Back) in the upper-left corner of the Workbook to return to the summary view.