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Knitting around the BIM corners


I'm making my first BIM steps (and I like it) BUT would like to use a real life example. Buildings are not always free standing and perpendicular (ahum). In this case the project is an attached building with crooked common walls on the left and right.
I find it difficult to model the corners using composed walls. In many cases parts of the walls need to be cut. My question is how will this relate to the of the volume of the ply walls later when extracting data?
Sometimes you will have to partly use composed walls and single ply walls. To me this seems to be a tedious task.

Attached is my 2D example with 'complex' corners (red circles).

My feeling is that in this case it would be easier to use single solids for every ply (facing and supporting walls).
Maybe use a composed wall for supporting walls + insulation (because this is in most cases attached to that wall) and another wall for the facing bricks?
However, then we end up with the window/door cutting through multiple walls problem, allthough there are workarounds...

Would love to hear your insights.

Thank you.



  • Yes, that is problematic for me too.
    I think currently it is adviced to pull out the Plies manually and
    trust that BIMSUGGEST will find all similar details.
    That gives infinite flexibilitybut can be quite tedious though.

    Yes, there are already discussions if modeling Plies, or groups of it,
    separately, could be another option.

  • Exactly - off-angles abound in the real world, as 'site givens'. No BIM programme is complete without total adaptation to that fact.

    The complete BIM should also welcome off angles in the new-design work - and not just in one plane such as walls at off-angles, everything else 'normal' - but to be comfortable, at the extreme, with every plane being 'off' - and easily intersected (incl their Composition Plies).

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Origami is the Japanese word for paper folding. ORI means to fold and KAMI means paper and involves the creation of paper forms usually entirely by folding.

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