Archive for the ‘ BIM Management ’ Category

The Fear of Over-Modeling – Part 3

Moving to the exact definitions of what goes in where and when, lets take a look at an example Level of Detail (or Development) doc that shows what you need to define.


Click on this to open it.

You will see that we have the Element type followed by columns for the Level of Detail by Phase (Conceptual thru CA).

Taking the first line – Walls – we see that in the conceptual phase we add detail at the 300 level.  Looking at the Categories doc from the last post we find that 300 is “Out of the box content”.  So you would add walls using OOTB content until you get to DD phase or beyond, where you would go back and create custom content as outlined under Category 400.

Moving down to Clerestory elements for the next example.  It uses 200 (fake content) and then moves to 300 ans then to 400 in CD phase and allows for manufacturing content (500) if desired.

So creating a list of all the content that might be in a model and then assigning a value to that content at a specific phase can help your team know what to do when.  The only thing left is to define Who controls that element.

The Fear of Over-Modeling – Part Two

Last time we discussed the concerns of some to avoid putting too much in the Revit/BIM model. This concern can cause people to include too little and some to include too much.  Defining the exact amount of data may fall into line with the kind of industry you work in or the kind of facility/building you are designing.  It is not an easy definition. It is not a one size fits all BIM World.

In this post I will share some definitions that I have seen and used.

Following the AIA efforts of defining things based on the 100, 200, 300 etc. classifications, I have the following Levels and categories defined. Click the image below to see the list.


The list goes from 100 to 600 in classifications.  Each one move to a higher level of detail required.  I have included definitions and coordination lists also.

The next post will define when to put example Architectural components into the model at what phase of the project.

The Fear of Over-Modeling

Managers who oversee BIM models have a constant fear that the designers will include too much.  That they will over-model and waste time and make the model grow too large.  Fearing that someone might put too much detail into a model, some constrain the users, leaving too much out.  Others have no fear of over-modeling and allow people to plow forward spending extended hours including details that never provide much ROI for the effort.

Many have written about this issue, trying to explain the level of detail needed in a BIM model.  As I review and read these I come away with the impression that the bottom line seems to be…  add just enough to communicate the design and get it built.  This has been the standard of care in Architecture and Engineering from the distant past.  Don’t put in too much and don’t put in too little.  Many have written to tell you just that, but they do not tell you what “exactly” should be included and what should be left out.  They have some general suggestions but nothing absolute.

Isn’t there a one stop list that everyone can use?  Maybe not… Since each firm will define what is needed and try hard to get people to follow the guidelines, I can see why there is no “one size fits all”.  What your firm needs is to develop is a document that defines what goes into the model, when it is added and who adds it.  Each firm has to learn on its own, but they do not have to continually relearn and stumble over the process on each project.

Even if a list is provided, you would have to look at it from your unique perspective and project stakeholder mix.  So rather than try to give you a long list that would blindly be used and generate frustration (maybe that is why no one provides a list), I think that the process should be to create your own list.  But how should that be done?

The first thing you need to do it determine your perspective.  What used to be called a Level of Detail Specification is now moving toward a Level of Development Specification.  You need to determine which you are going to be focused on.  There is a difference.  Level of Detail usually is focused on what goes INTO the model.  Level of Development usually focuses on what you GET OUT of the model.  Subtle difference, but it can change your document.  I will not fight over the wording, but the first defines what your designers put into the model from the object level.  “Do I add exhaust hoods now?  Do I detail out the wall cabinets and light fixtures now? Do I grab that component model off the web and slam it into my design as is?” And the second defines what you will get out of the model and that determines what goes in.  “Will I render that area?  Will the Structural Engineer need that information?”

My perspective is that it is a little of both.  Sometimes you have to think about individual objects and what is needed and other times you have to keep in mind the goal of what does this model need to produce.  Balancing the two will give you some flexibility so as to not lock down a restrictive environment.

In 2008 the AIA developed “Document E202™ – 2008 Building Information Modeling Protocol Exhibit” a PDF example document that is helpful to use as a guideline. Take a look at it and we will continue to discuss this in a future post.


How many BIM Managers are there?

How many BIM Managers are there?

I asked this question on my Annual BIM Survey and so did AUGI.  AUGI did its Salary Survey for 2010 and published the results in AUGIWorld magazine which you can see the full report here.

I want to zero in on the BIM Manager title to see how it has changed over the years.  I looked back to 2008, 2009 and 2010.

What the AUGI survey shows is that there is a larger and larger portion of managers who are starting to use the BIM Manager title.   In 2008 there were 131, then in 2009 there were 148 and finally in 2010 there were 258.  This is a showing that now 30% of the responders who define themselves as Managers are in BIM positions.  That is over 15% more than last year.

In my survey I asked for job titles and found that over 44% of those that used some form of a BIM title were defined as BIM Managers.

That compares to 43% last year and 41% in 2008.

The 33% that have some other form of title include things like:

CAD Manager
BIM Program Manager
BIM Technologist
Engineering IT Manager
Senior Design Software Analyst
BIM Implementation Specialist
BIM Specialist
Digital Design Manager
Design Systems Manager
Production Manager Revit

Do you have a formal Job Description?

I asked this question on my BIM Manager Survey for 2010 and here are the results…

In 2008 37% of those who held a BIM title (like BIM Manager) said that they had a formal written Job Description.

In 2009 that number was reduced to 32.4%

The trend toward lower numbers continues in 2010 with only 29.3% of those responding saying that they had a formal written Job Description.

I think this trend might be caused by more people informally moving into BIM positions in firms that have not created job descriptions.  These people migrated into the position (or maybe were hired into other positions under other job descriptions).

My concern is that if this trend continues,the industry may miss an opportunity to define the role.  Without a generally accepted definition of this new BIM Manager position, there runs a risk of the position having such random application that it carries little weight on a resume or when advancing your career.

To see an example that I have created –  go here

BIM Manager Surveys 2010

Help me put the final touches on my BIM Manager class for AU2010.

I am looking to compare prior surveys to what is happening in 2010.  By looking at the changes from year to year, we can see the progress being made and where there might need to be improvement.

I created them on SurveyMonkey

BIM Position Survey 2010 –

BIM Training Survey 2010 –

BIM Software and Projects Survey 2010 –

I need the result in 14 days – I know,I am starting late on this effort.

Please help me by giving your opinion.  Results will be shared at AU and also on my blog after the presentation.



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