topic Re: Multi-sloped Roof in Revit Architecture Forum

Multi-sloped Roof

BigPicture045 — Tue, 08 Sep 2020 15:17:07 GMT

Wanting to know the best way to tackle this roof. Can this be done using one roof?

Please see the original drawings for the roof:

The elevations keep getting flipped upside down regardless of any attempt to fix.

What I've got so far:

Re: Multi-sloped Roof

BigPicture045 — Tue, 08 Sep 2020 15:30:44 GMT

The main issue I am having is the different sloped roof over the front right of the house. However, this slope does not continue all the way across, so I'm not sure how roof by extrusion would create this.

The roof above the front porch is about a 5.5/12, where as the main roof of the house which is also on the left side of the house is a 10/12.

Re: Multi-sloped Roof

syman2000 — Tue, 08 Sep 2020 16:22:55 GMT

I would extend the 8/12 and 5.5/12 roof over to the main roof. Then do join geometry so you get the outline. After that you edit the main roof profile and then you pick the edge where the lower roof meet.

Re: Multi-sloped Roof

barthbradley — Tue, 08 Sep 2020 16:25:46 GMT

I see an 8/12 as well.

Post what you've got. Also, do you have full Revit with Modify Sub-Elements Tools?

Re: Multi-sloped Roof

constantin.stroescu — Tue, 08 Sep 2020 16:30:32 GMT

I'd use :

a Roof by Footprint with Cut Off made at the level of the lower Roof ridge height
and the second Roof by Footprint on Top of the first one with the same slope as the bigger slope of it..
Finally Join the two roofs..

Re: Multi-sloped Roof

barthbradley — Tue, 08 Sep 2020 16:56:46 GMT

no shape editing necessary.

...but you can use alittle bit of everything one this one. Defined Slopes, Roof by Extrusion, Slope Arrows. Fun.

Re: Multi-sloped Roof

barthbradley — Tue, 08 Sep 2020 17:48:53 GMT

FWIW @BigPicture045 :

Shaped Edited using 3 Split Lines:

...if you have full Revit.

Re: Multi-sloped Roof

constantin.stroescu — Tue, 08 Sep 2020 18:43:29 GMT

illustrations of the method described in previous post:

Re: Multi-sloped Roof

ToanDN — Tue, 08 Sep 2020 19:11:57 GMT

Of course. One roof by defined slopes. No roof by extrusion, no vertical cut, no extra roof, no shape editing.

Re: Multi-sloped Roof

BigPicture045 — Tue, 08 Sep 2020 19:03:47 GMT

For this project I am using Revit LT. I am unfamiliar with "shape editing" but from @barthbradley post it seems that that is the tool for the job.

From what I can tell, the other answers used multiple roofs. The main issue of combining the roofs is how they join together, especially on the right elevation. I'm thinking I can modify how I use the fascia board to compensate for this.

Re: Multi-sloped Roof

barthbradley — Tue, 08 Sep 2020 19:03:31 GMT

Does it work with the 8/12s?

Re: Multi-sloped Roof

barthbradley — Tue, 08 Sep 2020 19:07:31 GMT

I would worry about that personally. But if you want it flush top and bottom, then use a thicker roof for the 5 1/2:12.

...of a thinner roof for the 10:12. Six of one; half dozen of another I suppose.

Re: Multi-sloped Roof

BigPicture045 — Tue, 08 Sep 2020 19:08:27 GMT

@barthbradley are you talking about the other side? I think this is one of those things I'm just going to have to do a lot of adjusting to get it right.

Re: Multi-sloped Roof

constantin.stroescu — Tue, 08 Sep 2020 19:11:56 GMT

it looks like the solution can be more simplified ....without Cut Off....as can be seen in my screencast:

https://knowledge.autodesk.com/community/screencast/5c1da266-169f-47bb-9593-135d0f92413f

Re: Multi-sloped Roof

ToanDN — Tue, 08 Sep 2020 19:17:05 GMT

@barthbradley wrote:

Does it work with the 8/12s?

yes

Re: Multi-sloped Roof

barthbradley — Tue, 08 Sep 2020 19:17:03 GMT

@BigPicture045

Marginally thicker 5-1/2 roof:

Re: Multi-sloped Roof

constantin.stroescu — Tue, 08 Sep 2020 19:17:44 GMT

and sections through the Roof ...2d and 3d:

Re: Multi-sloped Roof

BigPicture045 — Tue, 08 Sep 2020 19:18:32 GMT

@ToanDN

Something got lost in translation. The above roof examples that have been posted are not based on the reference images nor the original roof plan. On the left side, the roof does not extend past the front gabled roof. It actually recedes a few inches.

@ToanDN When I try to modify the roof sketch, I get an error.

CorrectIncorrect

Re: Multi-sloped Roof

barthbradley — Tue, 08 Sep 2020 19:19:15 GMT

Yes, it still keeps the rain out with 8:12s.

Re: Multi-sloped Roof

ToanDN — Tue, 08 Sep 2020 19:21:30 GMT

@barthbradley wrote:

Yes, it still keeps the rain out with 8:12s.

That is not my file.