Volume of cut floor not correct

Hi again!

I would like to cut a floor with a void. I have done it but the volume of floor is shown as if it has been not cut. Basically it should have been Volume Floor-Volume Void… How can I do it in Dynamo?

It has been done here something similar here but I don’t get it…

Thanks a milion time!


i did this and got the correct volume. Don´t think you need Dynamo.
Step 1: create floor (check volume)
Step 2: create void geometry and cut with floor (got new volume)

I can check it with your floor if needed. Message me

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Thank you for reply. I checked it again, the difference was 0,018 m3 that is why I thought that it had not been cut.