Wiley Mastering Revit Architecture 2008 978-0-470-14483-1 ユーザーズマニュアル

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THE ADVANTAGES OF BUILDING INFORMATION MODELING
 
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happening in the Architecture, Engineering, Construction (AEC) world, with private and public 
sector owners beginning to demand BIM models as part of the delivery package.
The shift from traditional 2D abstractions to on-demand simulations of building performance, 
usage, and cost is no longer a futuristic fantasy but a reality. In the age of information-rich digital 
models, all disciplines involved with a project can share a single database. Architecture, structure, 
mechanical, infrastructure, and construction can be coordinated in ways never before possible.
Models can now be sent directly to fabrication machines, bypassing the need for traditional shop 
drawings. Energy analysis can be done at the outset of design, and construction costs are becoming 
increasingly predictable. These are just a few of the exciting opportunities that a BIM approach 
offers. Designers and contractors can begin to look at the entire building process, from preliminary 
design through construction documentation into construction, and rethink how buildings come 
together. The whole notion of paper-based delivery may become obsolete as more players adopt 
up-to-date, accurate, digital models.
As we’ve mentioned, with a Revit Building Information Model, a parametric 3D model is used to 
generate traditional building abstractions such as plans, sections, elevations, details, and schedules. 
The drawings produced aren’t discrete collections of manually coordinated lines, but interactive rep-
resentations of a model. Working in a model-based framework such as Revit guarantees that a change 
in one view will propagate to all other views of the model. As you shift elements in plan, they change in 
elevation and section. If you move a level height, all the walls and floors associated with that level 
update automatically. If you remove a door from your model, it’s simultaneously removed from all 
other views, and your door schedule is updated. This unprecedented level of coordination allows 
designers and builders to better control and display information, ensuring higher quality and a leaner 
process.
The immediate 3D design visualization of the building and its spaces improves understanding 
of the building and gives you the ability to show a variety of design options to all members of a 
project, at any moment. Integrated design and documentation keeps the data centralized and coor-
dinated. This in turn leads to live and up-to-date schedules and quantity take-offs. That information 
can then be used to make decisions earlier in the design process, reducing risk and cost overruns. Not 
only that, but with the coordinated BIM model, you can start running energy analysis, solar studies, 
daylighting simulations, and egress analysis much earlier in the process, allowing you to iterate 
through design decisions earlier, not later.
Coordination with BIM is now required for many buildings to come into existence. Consider 
Daniel Libeskind’s recently completed Denver Art Museum and its extreme geometric configuration 
(Figure 1.1). Integrating the mechanical and structural systems into a 3D model was essential to the 
building’s successful completion. Exact spatial organization of structural members could be mod-
eled, which in turn led to fewer field errors and fewer requests for information. In addition, parts 
could be sent directly to fabrication from the model, eliminating the need for 2D drawings entirely.
 
Figure 1.1
 
BIM makes it possible 
to build more complex 
buildings with fewer 
errors. Denver Art 
Museum, Daniel 
Libeskind
 
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