There has been a bit more interest in LOD recently. There was this extensive post  not so long ago, over at Anthony McPhee’s blog, practical BIM. And just today I read that the first draft of the BIM Level of Development (LOD) Specification is finally available for public comment. I came across this at James Van’s blog, All Things BIM. The LOD Specification was put together by a joint task force consisting of members of the AIA and the AGC of America’s BIMForum.


I have requested a copy of the document via but I’m still waiting for my email download link to arrive. The BIM LOD Specification is intended to complement the AIA LOD definitions. I can only speculate, but as long it is adding clarity to the LOD situation, rather than confusion or unnecessary complexity, it may prove very helpful.

The document’s intent, its primary objectives are:

  • To help teams, including owners, to specify BIM deliverables and to get a clear picture of what will be included in a BIM deliverable
  • To help design managers explain to their teams the information and detail that needs to be provided at various points in the design process
  • To provide a standard that can be referenced by contracts and BIM execution plans.

I hope to post further on this topic once I’ve had an opportunity to thoroughly review the document. In the mean time read James Van’s post or visit the BIM Forum for further details.

betterRevit, leading to better BIM!


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One Response to Draft LOD Specification Released

  1. I have reviewed for the BIMForum 2015 LOD Specification, including its errors, omissions, what works, what does not, and how to deal with the issues

    I hope your readers will find it helpful following your above detailed article

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