Hi @coolkris
You can first use the command "INTERSECT" on both the solid to a final object something like this:

You can then copy this and paste it into a new drawing using the command "PASTEORIG". Now return back to your old drawing and undo(ctrl+z) the changes made by intersect command. Slice the parapet wall from both side and it will look like this.

Now copy the intersected portion from the new drawing and paste it into the old drawing using the command "PASTEORIG" which would look like this.


Now you can use the UNION command to combine all.
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ವಿನೋದ್ ಕೆ ಎಲ್( System Design Engineer)

Likes is much appreciated if the information I have shared is helpful to you and/or others.
Please mark "Accept as Solution" if my reply resolves the issue or answers your question, to help others in the community.
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