Multiple boolean union operation

I have a strucutre with multiple breps that I need to simplify. Simple boolean union operation doesn’t seem to work. Any suggestions?

Large (1.0 MB)

Hi Charlie -

What makes this a Grasshopper question?
This model is rather messy, to say the least. You’ll probably have to manually get rid of overlapping geometry that is clearly superfluous and gets in the way of being able to BooleanUnion this.

Trying to automate this process, is what makes it a grasshopper question. The geo isn’t made within rhino or grasshopper and that is why it is messy