Chapter 12 Building Information Modeling 289
components in the building are grouped into
selection sets and associated to tasks in the
installation schedule. During playback of the ani-
mation, components move into place according
to the scheduled tasks. This is a powerful tool
for visualizing when specifi c construction
activities occur and checking the status of the
project at a certain date.
Construction simulations are particularly
important to contractors, who can determine
which methods to use for specifi c processes ahead
of construction. These types of simulations can
also help contractors predict potential confl icts
in construction and manage scheduling so the
project is built on time. A construction simulation
can also be shared with building owners, who
can view the expected sequence of activities
before crews break ground.
Model Construction
BIM model construction is based on a para-
metric modeling workfl ow. In this type of
in the fi eld is critical for construction effi ciency
and helps reduce material waste.
Simulating Construction
Designing and constructing a building
model in 3D modeling software is much like
constructing the actual building. Creating a
building model requires knowledge of building
materials, building systems, and construction
processes. See Figure 12-12. In order to create
an accurate model, the designer must know how
these processes work so that the building refl ects
sound building practices.
Before construction takes place in a BIM
project, it is possible to create a construction
simulation to verify constructability of the
building. A construction simulation is an ani-
mation that illustrates construction processes
in sequential order. The animation is created in
special software and is based on an installation
schedule. The installation schedule specifi es
construction tasks and related information, such
as start and end dates. To create the animation,
Model courtesy of DesignGroup and the National Audubon Society
Figure 12-12. In order to construct a BIM model accurately, the designer must be familiar with building materials,
building systems, and construction processes. Notice the exposed ductwork, steel joists, and steel beams in
this model.
Copyright Goodheart-Willcox Co., Inc.