BIM is now a crucial part of
the Architectural, Electrical and Construction industry, but the the large
adoption of BIM was only a recent event and has not always been the basis on
which the industry has worked. Before the clash detection, project scheduling,
collaboration improvement capabilities and other cost savings benefits of BIM
were recognized and proven as results of BIM’s use, the time and money
investment required to change from CAD to BIM deterred industrial change (Lu).
There was no way to prove whether creating a BIM model of an entire project
before its construction would result in the advertised benefits. Even still BIM
has not been fully adopted for every project to use the advertised benefits.
(Eastman).
Multiple dimensions can be
added to a BIM model. Common dimensions include 3D model, construction
scheduling, project cost estimation, life cycle assessment / sustainability and
maintenance and operation implementations. Of these, I would like to go into
more discussion about facility management. This is a dimension where BIM’s
capabilities are used to improve building maintenance and operation. Although
there are proven benefits to performing this extra work its is often not
performed unless required by the client. Even when this dimension is required
by the client it does not receive the same amount of attention as other
dimensions because it does not directly affect the profit of the designer and
contractor. All the benefits are passed onto the client. Even nearing the end
of a project the contractor and designer are more focused on finishing the
project and not highly interested in investing the profit from the project
completion in something that does not have a sure return on investment. While
the return on investment for the owner is conservatively 64% over a payback
period of 1.56 years (Teicholz). The development and use of the facilities
management dimension is able to have this significant of an impact on building
maintenance and operation because the as built model of the building can be
drafted to include parametric data about each piece of equipment in the
building, its exact location behind a wall, the model number, fabricator’s
contact information, and equipment maintenance manuals (Teicholz). The BIM
model can also be integrated with a building monitoring program that helps to
identify problems and provide maintenance reminders (Teicholz). This
wealth of information will enable the maintenance workers to react more
quickly, reduce maintenance errors, perform better repairs, and reduce the
amount of work they have to perform. These improvements will reduce the cost to
maintain the building and extend the life of the building. If the building were
to require renovation or retrofit, then an accurate BIM model would prove
invaluable at increasing the efficiency and ease with which the building is
reused.
While the cost is a significant deterrence to the owner requiring
the facilities management dimension, sometimes that dimension is not necessary
due to how important the building being constructed is and the cost benefit to
the implementation of a building monitoring system. The cost benefit limits may
fall short for the implementation of this dimension in a small residential home
due be crucial tools for large, complicated and important structures such as a
nuclear power plant. For the later, it is necessary that a highly accurate BIM
model and monitoring system be implemented to notify maintenance workers of a
problem, to extend the life of the very expensive building, and to reduce the
chances of maintenance errors. The economic loss related to a failure at a
powerplant greatly outweighs the loss of a residential house. In this case the
reduction of risk is the primary motivator and not the return on investment.
Meanwhile the investment would only be worthwhile if it actually produces
plausible benefit and mitigates or prevent economic losses due to a failure.
Comments
I liked how
you mentioned that the use of BIM for IPD is a large benefit of BIM modeling. I
believe that the use of BIM as a collaboration tool is its largest benefit. The
ability for the owner, maintenance manager, and building design and
construction disciplines to quickly and easily collaborate improve the quality
of the design and empowers the collaborators to develop solutions to conflicts
between systems, often leading to a better solution then otherwise possible.
The other benefits support the usefulness of BIM as a collaboration tool,
through better better visualization of the building so that problems can be
identified and the information in the model is the same for everyone so they
can more easily and accurately communicate despite the potential distance
between them.
Bryan,
I enjoyed the level of detail and explanation that you went into
to describe the interoperability issues between BIM programs and supporting
programs. Like you mentioned limitations on the interoperability of programs
historically has been a problem that affected the effectiveness of using BIM
programs and caused modeling errors. From what I have read, the
interoperability has enabled BIM programs to accomplish tasks that no one
program is capable of or is not as capable of when compared to supporting
programs. Because there has been more focus on making the different BIM
programs interoperable they are able to produce more complex buildings and
perform more thorough analyses of building models. Just like you I think that
there is still room for improvement and that the largest barrier to improvement
is the collaboration between the software programmers developing the programs and
the users of the programs. For instance, if an engineer is trying to produce an
optimized building that requires the use of new technology or to perform a unique
task to qualify a building that has a special use, BIM programs may not have
the interoperability with the program that performs the required analysis. This
interoperability will eventually be developed with enough need for BIM programs
to perform that rare analysis because it was either not performed before or
because the demand for that capability was outweighed by the demand for other
more used capabilities.
References
Eastman, Charles M. BIM Handbook: A Guide to Building
Information Modeling for Owners, Managers, Designers, Engineers and Contractors.
Hoboken, NJ: Wiley, 2011. Print.
Lu, Weisheng, Ada Fung, Yi Peng, Cong Liang, and Steve Rowlinson.
"Demystifying Construction Project Time–Effort Distribution Curves: BIM
and Non-BIM Comparison." Journal of Management in Engineering J.
Manage. Eng. 31.6 (2015): 04015010. Web.
Teicholz, Paul M. BIM for Facility Managers. N.p.: Hoboken,
NJ: Wiley, 2013. Print.
I think it is always interesting how the disconnect between owner and contractor can occur after to project is completed. The motives are both driven by cost however one is long term and a return on investment while another is looking more toward the short term and completion. Although I believe that this consideration from the builder can help facilitate long term relationships including return work and referrals once a reputation has been established
ReplyDeleteYes, I agree with you, I think the biggest advantage of BIM is reduce error and save time, there are some problems can only be solved with BIM, if we still use tradition way to draw the 2D plan by hand, it not only hard to change error, but also waste a lot of time, time is money, if there's problem in the drawing, a lot of things has to stop and wait for it
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