Top of Walls Passing Through Floors When Joined

[Seychellian]

Im sure there is a simple explanation to this one but every time i try to join these walls to the floor they pass through the floor and the floor finish despite the offset value being -150 (the floor thickness)

I have played with many of the parameters of each of the objects and I cant seem to get them to join normally. Any ideas why? 

EDIT: Just to note, the base of the walls seems to attach normally

UNJOINED:

JOINED:

JOINED (Zoomed):

[Redrunner92]

Can you post the .rvt file? That would make troubleshooting quicker.

[barthbradley · Accepted solution]

Has to do with the FUNCTION of Layer of the Compound Structures.

https://knowledge.autodesk.com/support/revit-products/getting-started/caas/CloudHelp/cloudhelp/2017/...

Bottom line: move your Floor's top Layer to outside of the Core and make its Function=Finish (e.g. not Structure).  

[Seychellian]

Thanks dude. I knew it was something simple.

[Seychellian]

I had the concrete outside the "core"