Sunday, January 10, 2010

BIM Execution Plans

Lately, I have been interested in BIM execution plans and protocols. Besides viewing a great info session on Autodesk University, I have also been looking at previous execution plans, such as the AIA E202, Consensusdocs 301, and the Penn State Execution guidelines and templates.
I have to say that Penn State's execution plan is a little bit more detail oriented than the AIA E202 document, but in general it is good to understand all of the documents.
Here are some links to all documents:

http://
www.engr.psu.edu/ae/cic/BIMEx/
http://www.pat.ca/files/pdfs/AIA_091708_E202-2008_eSample_Blank.pdf

In the AIA E202 execution plan, the Level of Development (LOD) is characterized in 5 different levels:
  1. LOD 100 - Overall building massing indicative of area, height, volume, location and orientation may be modeled in three dimensions or represented by other data.
  2. LOD 200 - Model Elements are modeled as generalized systems or assemblies with approximate quantities, size, shape, location and orientation. Non-Geometric information may also be attached to Model Elements.
  3. LOD 300 - Model Elements are modeled as specific assemblies accurate in terms of quantities, size, shape, location and orientation. Non-Geometric information may also be attached to Model Elements.
  4. LOD 400 - Model Elements are modeled as specific assemblies that are accurate in terms of size, shape, location, quantity and orientation with complete fabrication, assembly and detail information. Non-Geometric information may also be attached to Model Elements.
  5. LOD 500 - Model Elements are modeled as constructed assemblies actual and accurate in terms of size, shape, location, quantity, and orientation. Non-Geometric information may also be attached to Model Elements.


This video illustrates LOD 100 - 500 form the perspective view.





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