I was reading a friend's blog post (bim)x: not doing so bad, looking for information on BIM As-built models. We are seeing requests for as-Built models on our projects. For non-IPD projects, the unresolved question is ‘what is the best arrangement for the creation of an as-built model?’ Should the Architect(the original MEA) do it? The Contractor? In the article Andy sees the as-built model as a possibility in the distant future. The article is from 2006 and we are in the not-to-distant future. This reality is forming now but questions remain. The important considerations with as-built BIMs as I see it are as follows:
- What’s it going to be used for?
- The Level of Detail required of the as-builts(does it include every stud,hanger, fixture, etc.)
- Accuracy(Are elements required to be modeled within some measured tolerance?)
- How does the party responsible for producing the as-built model acquire the information of the constructed elements?
- Is the as-built simply a modeled record of the field-sketches and change-orders done by the Architect?
- Is it a joint effort between Architect and Contractor and how do they work together?
- Is the as-built an in-the-field monitored & modified BIM?
- What does this cost the responsible party - a full-time Reviteer?
- Does the as-built require product-specific data(light-bulb type & wattage, and motor model#'s url's and specs)?
- If it's a Contractor-produced/modified model, does the construction phasing remain in the model or does it get scrubbed out(and what does this cost us)?
- Response time(how quickly is the model updated)?
- What else?
These questions are a matter of project-specific requirements and client-contractor-architect relationships. These aren’t all the questions just one’s that come to mind. If you have more, or experience in as-builts, your comments are appreciated.