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Revit : contractual obligations etc, do you have documentation?

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    Revit : contractual obligations etc, do you have documentation?

    I'm starting this as much for discussion as getting any specific answers... and also because sometimes writing things down, helps...

    We are currently in the process of implementing Revit within our office. So far it's going well, people are gradually getting the hang of things and we are slowly pulling together some office standards and protocols.

    However one problem we are facing is the vagueness with which clients / contractors are coming to us to say 'We need a BIM model'. The problem with this is that it in itself is very non specific as it doesn't give any indication as to what they actually need or what they expect to be modelled. To compound matters they generally always have a BIM Protocol document based on AEC UK guidelines which covers all aspects of a BIM project.

    What I would like to do is to pull together a document that we can use to say A, B and C and included while D, E, F (plus anything else that isn't specified as being included) are excluded.

    the biggest issue we've come up against is when we start getting involved in details clash detection. Then we find that things need to become much more detailed in certain areas. Or if for example the contractor wants to use the model for construction sequencing etc. We have also had an instance where a client has tried to insist we used families produced by a manufacturer, that due to their setup wouldn't schedule correctly. these are just a few examples of issues I'd like to avoid or at least be able to charge as an extra / over.

    Has anyone else dealt with this or is anyone aware of any guidelines / paperwork that might assist? Or do you deal with it is a completely different way?

    Like I say I'm not really looking for hard and fast answers just some discussion.


    It's impossible to make anything foolproof as fools are so ingenious.

    Other people can probably answer this better than I can.. but this sounds like you need a good BIM Execution Plan. Get the team together at the start of the project and determine exactly what the model will be used for, and which protocols/standards will need to be adhered to. Put this together in a document that everyone agrees to, and that'll give you a good foundation for the project to know exactly what you're delivering, and how the model will work.
    "I WANT SOUP! This fork is useless! I'm going to use my spoon for everything."


      Yes, I think ultimately this will become part of our BIM Execution plan - I'm really just trying to wrap my head around the best way to include it. Fro example I don't think LOD would really work as some elements would be developed more than others.
      It's impossible to make anything foolproof as fools are so ingenious.


        You're on the right path with creating a document. There needs to be meaning to the open ended "We need a BIM Model" request. You could start with your own detailed internal guidelines. Define what you can afford with typical compensation in areas such as (examples are from the MEP side of things):

        - Level of Coordination...(from general wall and floor placement to specific/dimensioned locations, from general fly zones in the ceiling space to fully coordinated)
        - Level or Detail...(how detailed are families, how small of elements to model, is everything sloped, etc)
        - Level of Connectivity...(utilities to equipment, elect elements to panels, etc.)
        - Level of Information...(Information for your use or for others, COBIE, etc.)
        - Level of Design...(HVAC loads, Lighting calcs, etc.)
        - Level of Development...(Ref. AIA E202)
        - What will and won't be in your models...(Review master project specification and determine what's in and what's not)
        - Model Deliverables..(Format (.rvt, IFC, DWG, etc.), Model Exchanges, Output format, Output frequency)

        Use that to include language in your project fee agreements for what is a base service versus an add service. It's all doable, even the pie in the sky model, but compensation and durations may need to be adjusted. As real costs are defined, real needs surface and others fade away. I see BIM Execution plans as defining project specific needs and fee agreements the vehicle to reconcile the affordability.
        John Karben | IMEG Corp.


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