How to make a sloped cut to a column at its top?

[roquealfonso]

I'm currently modeling a parking lot that has a sloped floor, beams and slabs must follow that sloped as well. I'm having trouble trying to model properly the column with a sloped cut at its top (pictures below), how can I work it around. 

Yet with, bearing walls, it seems to perform this as it should (picture below also). 

Structural Columns (can't make a sloped cut at the top): 

With bearing walls there is no problem:

[PavelAnd]

Hi @roquealfonso. Look some workarounds below.

[rkhattar]

Hi @PavelAnd

Try the attach and detach options.

I find it works really well for structural columns. 

Can be done for reference planes, could also be attached to U/S of slabs and beams. 

Have to make sure of the following:

• Attach Column - Top or Bottom 
• Attachment style - Cut Column
• Attachment Justification - Maximum Intersection

Hope this helps.

[ennujozlagam]

you can refer to screencast video and see if helps. thanks

[roquealfonso · Accepted solution]

Thank you for your feedback! I figured out a way for working this around. 

I changed the column style from Vertical to Slanted End Point Driven, and switched for a tangent attachment at the base and top, when attaching the column to a reference plane that follows the same slope as the ramp. Picture below of the end result: