Currently working on REVIT, and our projects are primarily ground up commercial retail buildings
(I have worked on Vectorworks for several years, as well); we have a steady workflow in which we
begin modeling the project right away and then proceed with CDs after getting the proper coordination
with consultants and feedback from client. This all sounds typical, but where BIM really comes in handy
is in the visualization of the project, and in the coordination. When it comes down to developing the CDs
it becomes primarily a 2D or drafting process, much like AutoCAD. The continued benefits is the time
you invest into the modeling process, because this can save you when revisions or changes occur, and your
drafting elements are shown over not in-place of the model base components.
This all sounds well and good, but how might this whole process help in terms of preservation? Well,
having worked in a preservation/adaptive re-use office, I can honestly say that the primary benefits of BIM
would be in truly documenting the existing historic building. Unfortunately, their isn't much repeat use of the model per se, but the elements themselves such as roof and wall types should eventually lead to a well developed library of parts. This accompanied with a thoroughly cataloged set of trim, cornice, and panel profiles should lead to some rationale for using the technology.
Preservation work being the one-off, time intensive exercise it is, ultimately has more altruistic rationale
than mere time savings, but I do believe that utilizing BIM for schedules and as a visualization tool is 50% of the battle; the other 50% comes from its streamline workflow into CDs (the end-game).
Thanks for considering the opinion of others, Cheers.
George Barrera, Assoc. AIA
Project Captain, Mdn Architects
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George Barrera Assoc. AIA
MDN Architects
San Antonio TX
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