Roof Extrusion

[Anonymous]

Hi, I have created a profile and extruded to match the below but need to be able to edit it in plan view.  I'm guessing I have generated it wrongly in the first place.  Is there anyway the profile can be extruded around the curved inner edge but have the outer edge straight?  In the below image of the floorplan, the inner radius for the roof is 157m.  The roof outer edges are denoted by the dotted lines you can see.  I have also attached my extrusion which needs to end up being 43m on the long bottom edge. 

[Sahay_R]

In order to edit in plan view, your sketch also needs to be in plan view.

The extrusion family is a Generic Model. I would think that a swept Profile-Hosted family would be what you would need.

[Anonymous]

As far as I know I thought if I managed to use the sweep command it would make both the long outer edges curved but I only need the inner one?

[Sahay_R]

Again, you would need to Sweep a profile.

[kgetev0711]

I'm not exactly sure what you're asking but if you're trying to create a sweep profile with a radius, I would create two separate extrusions. One of the roof aligned with the outside face of the exterior wall, and a second with a sweep path with a custom profile and a path of the outside face of the exterior wall (in which you can actually select the curved path line and the profile will follow along to create a nice curved profile.) 

Please give me a kudo if you like my response.

[ToanDN]

Do you meant you need to radiate  a bunch of panels to create the fan-like roof?  If so, the extrusion family you have attached does not work.  You need one with the start and the end section profiles sized differently.

[kgetev0711]

ok, Here's another potential solution. see attached.

[Anonymous]

Thanks.  Yes I suppose it is a fan kind of shape  but I think maybe I should make the overall profile to suit the longer horizontal edge and then do cuts to alter it in plan view to create the sloping sides and then a sweep along what I'm calling the inner edge - a radial sweep that cuts into the roof profile.  Would that work?

Thanks for the potential solution, radius should have been on the opposite edge - not sure how you did it anyway, but thanks for trying.

[ToanDN]

I think you need to sketch you ideas on a plan using just lines to determine which option is more feasible.  When you are set with an option then you start worry about modelling it.

[kgetev0711]

maybe if you can draw it out on a peace of paper so i can see what youre trying to build in revit I can try to help you to actually build it in Revit. Sorry I'm very visual person. 

[Anonymous]

Hi, I've drawn the roof profile in AutoCAD.  The plan view shows the straight edge and the curved inner edge - the inner curved edge needs to have the stepped profile along its length ( curve ).  I'm thinking it might end up dipping in the middle in order to keep that edge profile consistent along the radius?

The different coloured lines on the right are where this roof will meet a wall but I could add that in later I think.

[Anonymous]

Hi, I've drawn the roof profile in AutoCAD.  The plan view shows the straight edge and the curved inner edge - the inner curved edge needs to have the stepped profile along its length ( curve ).  I'm thinking it might end up dipping in the middle in order to keep that edge profile consistent along the radius?

The different coloured lines on the right are where this roof will meet a wall but I could add that in later I think.

[chrisplyler]

I apologize for my unprepared, unorganized thought process and my hick accent...

[Anonymous]

Hi, Thanks for that.  Followed it but ended up with the funny ends you had on the straight edge, but mine on the curved.  I left the roof with no defined slope but that made no difference.  Any idea why the picked plane for the curved void sweep hasn't cut all of it.  I can only think its because the curved edge is shorter than the inner bit.  I don't seem to be able to stretch the void extrusion in that direction.

Oh, and should I have modelled this as a family to be able to import into my existing building project?

I've attached what I got for you to see where I went wrong.  Thanks for your help.

[chrisplyler]

Don't have time to look at your file right now, but yes...I think the little uncut bits at the end are caused by the concave shape of the roof, which is in turn caused by defining the slope from the lower, curved side. When I practiced before making the video, I started from scratch defining the slope only from the upper, straight side, and did not have that problem.

You can build it as a family if you want to, but since it's just a one-off in this single project, an in-place component is adequate.

[chrisplyler · Accepted solution]

I was wrong. The problem with the little slivers remaining wasn't caused by the concavity of the roof. It's an easy fix. Watch this...

[Anonymous]

Thanks Chris for your help.  Couldn't have done it without you.

[chrisplyler]

I'm glad to have helped.