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  Thursday July 1 2021
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Hi

I often encounter the problem, that the analytical model of revit is unusable because the points are not correctly linked. I must therefore resume modalization on a robot because it is faster to redo than to correct the analytical model in revit.

Is there a particular method to apply in structural modeling to avoid problems with the analytical model?
Should we check the analytical model for each new element?
Feasible only on "simple" projects?

please
there are about 3 months
·
#16719
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Hello,

Wanting to recover the model used for the purpose of creating plans to use it in a calculation software is a good idea "on paper" but in fact, and depending on your field of activity, it is more or less doomed to failure, for two reasons:

1) Finite element calculation software works by modeling neutral fibers. A wall is a surface; a column or a beam is a line. This modeling does not take into account the real constraints of the physical size of the objects and their connections. Constraints that a designer must hold to produce a realistic and achievable plan. A designer cannot therefore have a modeling approach similar to an engineer.

2) There is no miracle solution to generate a relevant analytical model at the same time as the real object is modeled. Adjusting the analytical model a posteriori therefore often amounts to wasting unnecessary time from the draftsman's point of view.

So, of course, there are still some reflexes to have on Revit and some easy object properties (easy, NOT fast and) to be configured to improve the analytical model as soon as the real object is plotted (this is also true for other software, such as Tekla, but the rules of use are different because the operations are different):
- Model the real object with neutral fiber then define offsets of the real model with respect to the theoretical model using the justification properties of certain model objects
- Model the real object in the right place then use the alignment properties of some analytical model objects
- Define functional analytical model automatic detection distances in Revit structure settings

But nothing that is neither a universal nor a quick solution, because very often the a posteriori modification is done object by object and all the objects do not offer these properties of easy adjustments.

I could spread myself in examples and presentations of concrete cases that you would not be further advanced. Just remember that whatever you do on Revit, and all the more so if the structural system of your work is complex (typically metal framework), resetting an analytical model will necessarily be time consuming.
there are about 3 months
·
#16737
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I am not a specialist in exporting to structure software, but I understand that SCIA Autoconverter aims to solve a large part of the work.
Has anyone tested or already have a review?
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