2011

Similarly, linking to an object animation scene integrates the features of Clash Detective and Object Animation
giving you the ability to automatically check interferences between moving objects.
Finally, you can link to an animated TimeLiner schedule (a schedule in which some tasks are linked to animation
scenes), and run automatic time-based soft clash tests.
Time-Based Clashing
Project models can include the static representation of temporary items, such as work packages, ships, cranes,
installations, and so on. Such static objects can be added into the TimeLiner project, and scheduled to appear
and disappear at particular locations, over specific period of time.
As these static package objects 'move' around a project site, based on a TimeLiner schedule, it is possible that
some static package objects could, at some point in the schedule, take up the same space, that is 'clash'.
Setting up time-based clashing enables the automated checking of this throughout the project lifetime. When
a time-based clash session is run, at each step of TimeLiner sequence, Clash Detective is used to check if a clash
has occurred. If it has, a date of when the clash took place is logged, along with the event that caused the clash.
You can review the
Clash Results and, for example, reschedule objects' appearance to eliminate such clashes.
To prepare for time-based clashing
1 Each static package that you want to use needs to be modelled in the project model covering the area or
volume required; for example, you can use semi-transparent blocks.
2 These static packages must be added as tasks to the TimeLiner schedule.
3 Extra task types must be added to TimeLiner (on the Configure tab) to represent different types of static
packages. You also need to configure the appearance for each added task type.
To link to a TimeLiner schedule
1 In Autodesk Navisworks open the project model file, which contains the TimeLiner schedule with the static
package tasks.
2 If the TimeLiner window is not already open, click Home tab ➤ Tools panel ➤ TimeLiner
.
3 Click the Tasks tab, and check the static package tasks are displayed.
4 Click the Configure tab, and check the task types have been added to match the static packages.
5 Click the Simulation tab, and play the simulation to view the static packages being displayed. Check they
are shown in the correct location and over the correct periods of time.
6 If the Clash Detective window is not already open, click Home tab ➤ Tools panel ➤ Clash Detective
.
7 Click the Select tab.
8 In the Left and Right panes, select the objects you want to test.
9 In the Link drop-down box, select TimeLiner.
10 Click the Start button. Clash Detective will check at each interval in the project to see if there are any clashes
present. The number of found clashes is displayed in the Found box.
NOTE If the TimeLiner project is large in size, running this type of clash test will invariably take more time to
complete than a normal clash run.
You can now review the found clashes.
444 | Chapter 16 Locate and Manage Interferences