section rotation

[ksekhavati]

Dear All

I have a 2 way sloping slab. when I take a section through the slab I get a result as fig. (1), but I want the result to be as fig.(2). If I try to rotate the section on section view, I get an error message saying: Can't change plane of Floor Sketch (is there any way of rotating a section view?).
any help would be appreciated.

[awes]

Floors and slabs have always vertical sides. Rotating section view doesn't help. You need another type of family. Try generic family and model in-place and rotate or a adaptive component.

[ksekhavati]

with generic family I won't be able to use the sub element command as this is a 2 way sloping slab?

[Jason.P]

If you are just needing it to look a certain way in the section you cut, have you tried the cut profile command under the view tab. I was able to make the end look like you wanted. See picture

https://knowledge.autodesk.com/support/revit-products/learn-explore/caas/CloudHelp/cloudhelp/2016/EN...

[constantin.stroescu]

You can just Cut The borders with two Voids:

• create a Named Reference Plane to be used as Work Plane for the Extrusion of the Void
• make two Component> Model in Place>Floor> Extruded Voids and Cut the Floor

Unlike Cut Profile command , this is a real 3d function.

[ksekhavati]

Hi Constantin. Great help as usual. I think I didn't make myself understood properly. I have attached a sketch of what I need. I understood both your solutions, but I like the slab to be as section 1-1 as per attached sketch. by the way, on your solution 1, using the cut profile, is there a command in Revit which does the opposite(i.e. adds a profile rather than cutting it). Many Thanks in advance.

[ksekhavati]

Hi Constantin. on your second solution I tried to follow your instruction by creating a ref. plane on the slab plan. when I try to create a void extrusion I am directed to a section view. here I can not pick the end of slab to create a triangular section for my void extrusion. is there any way possible at all for you to show your solution on a video clip please. I'll be most grateful.

[constantin.stroescu]

Q.

is there a command in Revit which does the opposite(i.e. adds a profile rather than cutting it)

A.

Yes, it is such a function : Floor Slab Edge

Architecture >Floor> Floor Slab Edge

You have to made a custom Profile with Angle as Parameter so to be able to fit the slope..

[Jason.P]

Yes with the cut profile command you can add as well as remove. It is a really handy item for doing hybrid sections. 

[awes]

Hi, you say you have a 2-way sloping slab.

Can you please tell us the elevation levels in each corner.

Is the top surface one even sloped plan.

Are you trying to model a rotated slab and with a section view show that it is rotated.

I'd like to know the end result you are looking for.

The plan view and section view doesn't correspond.

[ksekhavati]

Thank You for getting back. this is basically a car park slab which will be cast flat and then placed on site on a slope. I

have put spot levels on each corner to make it more clearer.

[constantin.stroescu · Accepted solution]

I've made a screencast on the subject of a sloped Floor Slab that is Cut by a Void in order to obtain the desired edge profile....maybe it will help you..

https://knowledge.autodesk.com/community/screencast/20f64325-e974-445e-b679-0ce4714ecad3

[constantin.stroescu]

If you intend to use concrete prefabricated elements then a Faced Base Family could be an appropriate solution.

I made a screencast for another post on the subject, but I think it can be useful also for you:

https://knowledge.autodesk.com/community/screencast/0b9f8dd2-70ca-474d-a18b-8d9d4a2d82e7

[ksekhavati]

Thanks a lot Constantin for taking time to do the screen casts. I have looked at both screen casts you kindly sent. I prefer your first solution which has helped me a lot.