2012

5 In the Refresh from Data Source Dialog Box (page 620) select one of the
following options and click OK.
■ Rebuild Task Hierarchy. Choose this to re-import all tasks and
associated data from the selected project file(s), and rebuild the task
hierarchy on the Tasks tab.
■ Synchronize. Choose this to update all existing tasks in the Tasks
tab, with the latest associated data from the selected project file(s)
(for example, Start and End dates).
TIP You can also right-click data source in the Data Sources tab and select the
Synchronize or Rebuild Task Hierarchy option.
4D Simulation
In this section, you will learn how to play 4D simulations, and how to
customize the simulation playback and appearance.
Play Simulations
To play a simulation
1 If the TimeLiner window is not already open, click Home tab ➤ Tools
panel ➤ TimeLiner
.
2 On the Tasks tab select the Active check box for all tasks that you want
to include in the simulation.
3 Be sure the active tasks are assigned the correct
Task Types (page 611).
4 Be sure the active tasks are
attached (page 640) to geometry objects, and
click the Simulate tab.
5 Click the Play
button.
The TimeLiner window displays the tasks as they are carried out, and
the Scene View shows the sections of the model added or removed
over time, in accordance with the task types.
NOTE When the Simulate tab is in use, by default the current simulation date
is overlaid in the Scene View. You can customize the displayed information by
using the Overlay Text Dialog Box (page 626).
656 | Chapter 14 Simulate Construction Scheduling