Top Railing fillet issue

[rodrigo.bezerraRD5KM]

Hi,

I can't figure what's wrong in my top railing settings. The start extension (yellow highlight) is fine as desired, but the ending one (red highlight) is breaking.

Attached is a stripped version of the model.

[barthbradley]

That radius won't work. Edit Rail Join and change it to a miter. 

...you can try smaller radii too.  

[rodrigo.bezerraRD5KM]

That's odd, because the radius works at the start without editing the rail. And I'm not supposed to change a design I do not conceived. The designer wants it to be a fillet join.

I appreciate the remark and will investigate if I can accomplish the same result with different radius. I can change that.

[ToanDN]

The radius is too large for the short segment at the corner.  See revised file.

[rodrigo.bezerraRD5KM]

But why Revit draws a segment that's different from what I set in the top rail type?

[ToanDN]

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@rodrigo.bezerraRD5KM wrote:
But why Revit draws a segment that's different from what I set in the top rail type?

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The top rail has been manually edited.  If you Tab select the top rail and Reset you will see the original form. 

For railing @ odd configurations, I prefer to use a top/handrail type without extension, and edit them and add the extension manually to get exactly what I need.

[barthbradley]

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@rodrigo.bezerraRD5KM wrote:
That's odd, because the radius works at the start without editing the rail. And I'm not supposed to change a design I do not conceived. The designer wants it to be a fillet join.

I appreciate the remark and will investigate if I can accomplish the same result with different radius. I can change that.

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Your Rail as a custom configurations. Basically, rules to follow. Why not set all segments to BY HOST and TYPE, and create a "dummy" stair to host the Railing - then hide the "dummy" in the Views?  

[barthbradley · Accepted solution]

The problem is with your Top Rail PROFILE Family (CDC_PerfilCircular_GuardaCorpo.rfa).  Origin Ref. Planes need to intersect at the center of the circle like this:

... Just select Railing in Project and press Reset Railing. Then load revised Profile into Project.  

[ToanDN]

If you use the revised profile then you need to change the railing Height in the type properties to account for the added dimension (1/2 the diameter of the top rail).  

By the way, I don't know what part of the world you are from, but where I am, you cannot have the horizontal extension immediately at the bottom step, you would need to extend the slope further, then a horizontal extension if required.