BIM-Based 4D Modeling and Scheduling - Construction Project Scheduling and Control - page 404

Figure 15.9 Snapshot of how to define column types
The tasks columns can be specialized by clicking on the Choose Columns tab, as
shown in Figure 15.9. The list of all available column types are given in Figure 15.10.
The widely utilized column types are; “Name,” “Status,” “Planned Start,” “Planned
End,” “Actual Start,” “Actual End,” “Task Type,” and “Total Cost.”
The right section of the Tasks tab contains the Gantt chart of the project, which
displays colored bars representing the status of the project tasks. Please refer to the
previous chapters for an in-depth understanding of Gantt charts.
Creating and Importing Project Schedules
Schedules can be developed in Navisworks in three alternative ways: by manually
creating a project schedule, by adding tasks based on the selection set, or by estab-
lishing a link to an external project schedule that was created by scheduling software.
In the first method, similar to the scheduling operations undertaken in scheduling
software, project tasks are created, task durations are attached, and logical sequences
among tasks are identified. In the second method, the “Auto-Add Tasks” command
is used to create tasks with the same names that are given in the selection set that
have already been defined in the 3D model. Finally, in the third method, an external
project schedule can be imported with scheduling software and linked with the 3D
model represented in Navisworks. In this case, each task defined in the schedule should
be attached to the 3D model components to create a 4D simulation. Schedules can
be linked to Navisworks with scheduling software such as Primavera and Microsoft
Project or CSV Import. In order to import an external schedule, the Data Sources tab
of the TimeLiner should be used.
The Data Sources tab enables the user to import a project schedule with external
scheduling software. All data sources imported from a software or application will
be listed within the Data Sources tab in a table format, with source and project
information. To import a schedule from an external software, click the Data Sources
tab from the TimeLiner menu. An external schedule can be imported in the form