Revit Sweep Profile issue

[Anonymous]

Hi,

I'm trying to model the parapet of a curved driveway ramp using sweep but parapet profile appeared perpendicular to driveway surface which is not what I want. Is there a way to overide so that parapet profile appear align to axis instead?

[ennujozlagam]

Hello, it is easy to create a beam ramp by creating a profile as slab edge and load into your project you can also apply parameters in the profile which can easily manipulate the dimensions. or you can use profile - rail to create a parapet wall apply as a railing. Thanks

[ennujozlagam]

hello, on second thought go to 3d mode view > model in place > sweep > use the "pick path". thanks

[Anonymous]

Hi, thanks for reply but the profile appeared slanted/twisted ie not align axis.
I understand the default is Sweep will always model perpendicular to surface? Anyway to override?

[ennujozlagam]

hello, are you asking something like this? thanks

[RDAOU]

First thing you should note about sweep; is that it places the working plane for the profile perpendicular to the first path you pick...ie: if you picked the circle; the steeper the slop of the ramp is the more deformed the sweep will be.

Even if you give the path a little bit of stretch on the horizontal level and pick that first; the sweep will snap off at the extents (top, bottom or both) hence, will not give you a proper finish in such case...

When it is curved and sloped it is preferable to use "Swept Blend" instead. See screencast below. (its for a beam but the same applies to a parapet

[Anonymous]

I see that your parapet is not sitting on ramp surface.
My parapet is sitting on ramp surface.

[Anonymous]

Hi RDAOU,

I tried SWEEP BLEND too but it only allow one curve at a time. My driveway is 360 degree, consists of curves and straight ramps. So I have to repeat many times?

[RDAOU]

If you are sketching the path; Swept Blend gives access to Start-End-Radius Arc...the Arc can get up to 359 degrees but can not close the circle otherwise it wont be having a start and an end...

So it it up to you and how you model your ramp...it can be 4 pieces, 2 pieces or even 1 piece...logically speaking I can't see it as 1 continuous 360 degrees element/structure; personally would model it either in 2 (180 degrees arcs) or 3 * (120 degrees arcs) in order to control slops and future further detailing

If you are Picking Path and you have modeled your ramp in 1 piece; you can then pick a full circle which starts at lower level and ends at upper level (see screencast below); however, how to model the ramp is a different story in another post maybe 🙂

[Anonymous]

HI RADOU,

Thanks!

Pls see screencast showing my ramp shape. I tried using Sweep blend but parapet appear distorted.

In my first try, I create as one piece but parapet is extremely distorted.

Then I redo ramp in sections of straights and curve floor slabs(as shown in screencast), was less distorted but still not acceptable. How do I model parapet such that parapets are not perpendicular to surface of ramp?

Do you advise I model this ramp shape in one piece or break into sections of straight and curved floor slab?

Pls advise.

[Anonymous]

Missing screen cast here

[chrisplyler]

You could model it as a Railing.

1. Use the Profile-Railing.rft family template to create the profile you want. Draw it all on top of the horizontal referene plane. Give it at least one type and save it with a unique name. Load it into your project.

2. Place a railing onto your ramp. Select it. Edit Type. Edit Railing Structure. Get rid of all rails except one, and change that one to be the one you made. Set the 'Height' parameter down to zero. Edit Balusters. Delete all balusters listed.

[Anonymous]

Hi Chrisplyler,

Thanks for reply. But I cant seem to be able to make rail follow the slope of floor. I tried to host rail on slope floor but not working. Could you be so kind to show me in webcast how you do it?

[RDAOU]

@Anonymous

The problem is not the tool or method you are using...the main issue in your model lies within the ramp itself.

The path which you are picking doesn't seem to be smooth enough to warrant a smooth parapet. Besides that, lots of irregular transitions (see image below) so I am not sure Revit is able to figure which run to respect

When using a sweep blend and you want the profile to end up vertical, you need to make sure that picked path results 2 workplanes (top and bottom) with a Y axis aligned with the edge (see image below) ...  when the top and bottom workplanes are properly set it will not snap out of place like it did in your screencast. when it does, 99% of the times it means you have issues with the ramp itself.

Besides; are you sure you used a swept blend!!! it sure doesn't look like you did.

[Anonymous]

Hi RDAOU,

Noted with thanks.

It is true the gradient of driveway is not consistent as it is made up of parts. I've also tried to create ramp as one but also don't seemed to be able to get consistent gradient. Pls advise how you would create such a ramp form to ensure consistent gradient. I suppose that will solve the parapet problem too.

[RDAOU · Accepted solution]

@Anonymous

lol it's a lot on just a ramp so if you find it helpful; kindly mark it along with any other reply you got which may be helpful to you as well as other forum visiots...Otherwise; if this too doesn't work for you then do accept my apologies... I am not sure I can contribute more to this post

see following screencast...