Metric Tutorials - Autodesk

These settings ensure that the shaft extends through the structure without penetrating the roof
or the foundation.
9 On the Design Bar, click Finish Sketch.
Add second stairway shaft opening
10 Zoom around the stairway in grid location A1-B2.
11 On the Modelling tab of the Design Bar, click Opening ➤ Shaft Opening.
12 On the Design Bar, click Lines.
13 Sketch the opening surrounding the stairwell.
TIP When sketching the shaft, use the Lines tool in combination with the Pick option and select the
external face of the walls imported with the DWG file. Use the Trim tool to clean up gaps and
intersections.
14 On the Design Bar, click Properties.
15 In the Element Properties dialog, under Constraints, do the following:
■ For Top Constraint, select Up to level: Roof.
■ For Base Constraint, select Foundation.
■ For Top Offset, enter 300 mm.
■ For Base Offset, enter 300 mm.
■ Click OK.
16 On the Design Bar, click Finish Sketch.
17 On the View toolbar, click .
166 | Chapter 5 Creating a Structural Model