Do you do the I in BIM (aimed to RST users)?

[JH75]

Hi,
We are a small structural company and have now completed more than a handful of different project in Revit - mostly Precast sheds and we are currently doing a large shopping centre. I do love Revit and find it very hard ( and un-motivated) to go back and do some work in AutoCAD.
What I was wondering if anyone here give the client anything ells than just the "drawings? Do you give them quantities? Quantities are only as exact as you model - it do happen that I don't model all members or all slab set downs.

J

[david_peterson]

We had one contractor (He's the only one in the area that uses revit) take our model (9 story CIP) and add all the reinforcement to it (modeled) to get a take off. They said the model was very slow by the time they got done.
I had the same contractor on another smaller project re-model the project to get reinforcement and form layouts.
We did another project, fully modeled steel, passed it on to the contractor to give to the fabricator, both said they didn't want to use it, they were going to rebuild the model in SDS/2 anyway.
From what I can tell, the "I" part is starting to catch on, but because no one (well not that I know of) wants to take the risk of handing a model to a contractor for their use. The reason shop drawings are done is so they can catch any mistakes (hopefully) that may have been made. The only thing I personally ever offered up was a set of line drawings that they could use as a back ground. No text or elevations were provided.
If there is a mistake in your model, (which on paper currently in the states only provides intent) and the contractor doesn't catch it, who pays for the fix? The current answer is still the contractor, but you will have a very hard time trying to convince them on it. Hence the contractors I've spoke with don't want to use what you give them for anything more than SWAG estimates.
Or at least that how I see.

[m20roxxers]

Depends on what is being requested. Developers are asking for alot more these days and we've been involved on a couple of BIM projects which we provide quantities or a Navisworks model to the developer for post construction. Quantities in Revit (especially reinforcement) is too cumbersome and time consuming we only ever had one time that happen and it was written into the contract and costed for overheads in extra time. Apart from basic quantities that is usually handled by a seperate firm.

Besides those we run all our anslytical systems either through Revit exports or with some macros for excel calculation systems the engineers have setup.

Depends on the projects and sizes, as well as the developer involved as to what level of BIM is asked for if any or demanded.
Our Contracts allow for a certain amount of 3D information to be provided if desired but if they want more information or 3D models then these are extra.