# [IfcOpenShell] Condensation of B-Rep geometry

Hi Moult

I extracted B-Rep geometry using geom module in ifcopenshell library.

There are around 150 vertices retrieved for one manhole. I want to check if there is a way to condense it in a meaningful way. I am extracting product and geometry data into a knowledge graph. I am not sure if storing 150 vertices for one manhole is a viable option.

Appreciate your thoughts.

Thanks

Shilpa

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## Comments

I don't understand what you mean with condensation

@Shilpa can you share the IFC file here, i might be able to show you how to reduce it via BlenderBIM.

@theoryshaw id be interested in seeing how you do that as well, any chance you'd be up for a screenshare maybe? @Coen I think @Shilpa meant to simplify the geometry, ie reduce the polygons/vertices.