Dropping column bases to mesh below

[Conrado Dominguez]

Greetings to allin this new year

I have many, many,many columns, previously set on top of of flat slab that has now changed to a mesh,with slopes going in several directions.

Dropping all the oolumns to the lowest mesh elevation and then performing a collective "substraction with downwards extrusion" will work, however,I was wondering if there is an equally collective way to have the columns selected and then "gravitate" to the mesh.

Also, what effect have the intensive use of Boolean Ops in the size of a file?

Conrado

[Anonymous]

Link wrote:
I would say not - for columns at least. Element Information still lists the trimmed volume and a schedule can list the (net) volume.

Great!... I guess I'll use SEO more frequently...

[Anonymous]

Link wrote:

Braza wrote:
The only problem that I see with the utilization of SEO in this kind of situation is that quantities are compromised...
Or not?...

I would say not - for columns at least. Element Information still lists the trimmed volume and a schedule can list the (net) volume.

Cheers,
Link.

AFAIK, SEOs are counted in volume calcs on all the basic model elements (walls, roofs, slabs etc.). Scripted parts of course are more complex.

[David Shorter]

Quants work OK mostly. I wouldn't use SEO with Meshes so the Mesh to Roof and trim the columns is a good solution.
The BIG IMHO problem with SEO's is that you have no idea whats doing what to what. Select any item and you have no idea if its being cut or is doing some cutting.
Try unknitting a SEO issue, you will find it is impossible.
SEO do not work with IFC
SEO's do not work (reliably) with hotlinks
SEO's slow the file down
Apart from that they are great

[Anonymous]

David wrote:
Try unknitting a SEO issue, you will find it is impossible.

I keep them simple when I need them for quantities so I can keep track of the effects, but I agree that we desperately need better SEO management. At least we can see what items are related by selecting one in 3D.

SEO do not work with IFC

I haven't had any problem with this yet though I haven't pushed it hard. There are the silly IFCopenings to be deleted though.

SEO's do not work (reliably) with hotlinks

This can be tricky for obvious reasons. With proper discipline it is manageable.

SEO's slow the file down

On my machine it takes an awful lot of SEOs before it becomes too tedious

Apart from that they are great

I love 'em despite their limitations. I would sure hate to be without them.

[David Shorter]

But Matthew, you are a very experienced user, in fact an ArchiCAD guru. You use these things sensibly, there are some that do not, some don't ask. I would always avoid them (SEO's) if possible as it is impossible to keep track of whats what.