Revit Structure
Revit Structure
(OP)
Has anyone here tried to use Revit as an analysis tool? I've used it before to do 3-D modeling, but that is the extent of my knowledge of it.
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RE: Revit Structure
RE: Revit Structure
Mike McCann
McCann Engineering
RE: Revit Structure
RE: Revit Structure
Mike McCann
McCann Engineering
RE: Revit Structure
RE: Revit Structure
One is all about the drawing/representation of the beam and the other is the theoretical beam position used by the associated analysis programs.
You can display either, neither or both.
RE: Revit Structure
RE: Revit Structure
Revit automatically produces a setback that can be changed. The node is actually at the workpoint of the connection. When you go to cut the section Revit generates the 2D column and a beam. That's it. Very bland. So you have to DRAW IN BY HAND IN 2D all the bolts, clip angles, welds, text, EVERYTHING. And if you update the beam size, your hand drawn stuff DOESN'T update with it. It sucks. Everyone I know hates it. Have been to the 3 day training course and even the trainer says they a lot of people are let down when they get into it because a lot of the sales pitches are deceptive. It's so much more work for nothing gained. The company hasn't been profitable on any Revit jobs. It doesnt help coordination issues like they claim. Beware
RE: Revit Structure
At least with Revit, you can model the structure, view it, rotate it, understand it, export it to analysis software, etc.
I'm not arguing with you - just trying to marry your displeasure with what I've seen done elsewhere...
We've been using Revit on another segment of our business (precast) and most of the guys are starting to buy into it.
RE: Revit Structure
RE: Revit Structure
We have architects and MEP in house, so yes we have integrated models and its easier because we're all on the same network. Coordination seems to be something everyone's interested in. BUT there's a big but. The way its set up, (which is the way autodesk recommends) Architectural has a model. Then structural makes a model and links the architectural model in. It's essentially the same thing as Xrefing a base drawing in autocad. Their 3D model shows up as a block and you draw all the structure over that block. You "freeze" out layers you dont want to see. It will not catch coordination issues like drawing a column over a wall. The only coordination feature is a thing called "copy monitor". You designate certain elements in the architectural link with copy monitor, and then if architectural moves them, it pops up a general window saying "Do a coordination review".
Having several people working on the same file makes things a bit more complicated....too complicated to type here. I recommend if you're genuinely interested you look on www.augi.com forums.
RE: Revit Structure
We have everything in house here...architecture, structural, mechanical, electrical, civil...etc. Is there a good base program to use for all of these disciplines?
RE: Revit Structure
RE: Revit Structure
When the notice "do a coordination review" pops up, is it easy to determine what changed?
RE: Revit Structure
UcfSE asked about architects making changes. This practice will not stop, in fact it may get worse. You see, when something is modeled in 3D it APPEARS more finished than it really is. The architects mass model in a wall. Said wall appears on the 3D image but the architect doesn't work out the details of the wall section until much much later. Thing is, you need the wall section NOW to set the building grid and to see how complicated areas are going to fit together. People think the architects are getting close to complete because some semi-defined mass wall element has been placed.
Placing an object in 3D also gives the false impression that it has been thought through. Just because somebody placed the element doesn't mean it's right. Things get placed to take up space rather than placed for a specific design purpose.
Don't get me wrong - I see 3D as a very useful tool, especially for owners to "see" what they are getting beforehand. Beyond that, it seems to permit the designers to "show" more with less real design work. Design work that eventually must be performed and used to be performed sooner rather than later!
RE: Revit Structure
RE: Revit Structure
RE: Revit Structure
It works really slick now. Probably 90% of the jobs we do are modeled. My drafters pick up conflicts all the time. They don't use a conflict detection module, but it's pretty easy to see any conflicts (duct through a beam, etc).
One thing to think about is the order of how drawings are delivered. The structural efort is big up front because everyone wants to tack something onto your structure. Something to think about during scheduling.
Bently's aquisition of RAM and STAAD creates a promising situation.
RE: Revit Structure
No, we dont give the models to contractors or fabricators. Nobody has asked for it yet. Even if they did, I'm sure we'd ask a fee to cover our increased liability.
RE: Revit Structure
RE: Revit Structure
I've heard the first couple of projects with Triforma are pretty rough. Whenever we bring in a new drafter, it takes about a year for them to get up to speed on 3D modeling. We've even had drafters leave because they couldn't wrap their heads around the 3D concepts.
Bently is pretty responsive to our questions and requests. I think it's important to communicate usability questions and problems to them so that the software is continually improved. It's in their vested interest to make us happy and keep us from jumping ship to Autocad.
Don't give up after the first try. The first project may be difficult, but I think it will get easier after that.
RE: Revit Structure
RE: Revit Structure
I wonder if anyone else has done the model dump to RISA and I would like to know the success/failure they have had.
I attended a seminar the other day where a principle in a Structural Engineering firm 30 people) gave a speech. They are supposedly leading in Revit Implementation , and they said they used Etabs. He indicated that there were issues with the strucutral model dump, and I can say it is not smooth with Risa right now, but it does give you a great leg up on the Risa model.