Precast Molding

[Anonymous]

Hi, what would be the best solution to create these precasts. They are different from project to projects. By creating a model in place, I should create for each project separately. So appreciate any help.

[barthbradley]

Extrusions with sweeps would probably be the simplest in the Revit world. I suspect in the real world, they are decorative wooden paneling attached to bay framing. 

[chrisplyler]

Well, she did SAY they were precasts.

Since they are different for each project, and not frequently repeated, I would construct them as in-place components. I would model each part as it would be cast.

Then I would make each one into an Assembly, and create dimensioned assembly drawings of each one, to provide to the precast subcontractor.

[ToanDN]

Another option is using curtain wall to draw them in front of the regular walls.

[barthbradley]

@chrisplyler: What? You never heard of "precast wood"? HA! 

I'm still on my first cup of coffee this morning. What else can I say? I'm stupid? 

Still -- Extrusions and Sweeps is what I see. Choose your own material. 

[Anonymous]

This could be a good solution, but I didn't get exactly, how curtain wall could have these judges and recessions?

[ToanDN]

See attached.  It will take time to set up nested curtain wall and various frame and panel types.  Another drawback is the visible join lines between vertical and horizontal frames, I don't know how to get rid of them.  On the plus side, it is pretty easy to adapt to different dimensions and configurations.

With that said, model in place should be a more straight forward approach and easier upfront.  And without visible join lines.

[chrisplyler]

Model in place is the best way to go with these. Each monolithic precast can be modeled as one component. Each one can be a scheduled item. Each one can have a dimensioned assembly drawing to hand off to the precast company.

[ToanDN]

I wasn't trying to prove otherwise, just showing another approach.  And anything can be made to Assembly.

[Viveka_CD]

Hi @Anonymous

Thanks for posting on our forum.

Please take a look at the link HERE for the best methods for modelling Revit precast panels and the pros and cons for each method.

If you find posts have solved your problem, please click on 'Accept as solution' to help others with similar questions. 

Regards,

[chrisplyler]

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@ToanDN wrote:

I wasn't trying to prove otherwise, just showing another approach.  And anything can be made to Assembly.

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Oh, sure. You know, I was imagining that her use of the word "precast" implied a thick, heavy concrete element...something that we wouldn't logically think should be modeled with a curtainwall. But now that I'm looking at her elevation view, I'm starting to wonder.

Is that bay over a garage door? Is that bay only a couple of inches over the top of the door, not allowing for much of a header beam? Does that bay - as is implied by the roof over it - hanging out beyond the face of the garage door?

If so, then certainly they aren't thick, heavy precast concrete items. Maybe they ARE just a facade of trim items. In which case she doesn't need to send assembly drawings off to a precast company anyway.

[Sahay_R]

What about a line based family with parametric arrays? Panel families can be nested into this. Easy to slap multiples in place. Just thinking aloud......

[Viveka_CD]

Hi @Anonymous

I just wanted to follow up here, any progress on this issue?

Please mark any posts that help with "Accept as Solution" and thanks! This will benefit other users seeking similar solutions.

Regards,