Curved Roof with Multiple Slopes

[phyllisr]

Attached is a SketchUp image of the design for a small office building that is structurally complex with some site and grading challenges as well as some unusual modeling challenges. We have solved it all except the roof at the curved section of the building.

Maybe add this to the Raise the Roof session at AU 2007?!?!

We have tried just about everything in our arsenal of tips and trick and work-arounds to no avail. The curve prevents using the new 2008 tools. Using the traditional slope arrows is a problem also because of the curve. We have tried mass elements and applying a roof to a face, we have tried in-place roof families, we have tried sweeps and extrusions and voids in many combinations and cannot seem to get this quite right.

If anyone has time and wants to tackle an interesting problem, we could use some assistance. At this time, we are using a combination of techniques to get close but we would like to create this correctly so we can give our structural consultants an accurate model that we know is right.

If a stripped copy of our model would be useful, I can post it. All we really want is a demonstration of any dimension or scale that works and that we can deconstruct for our project. Thanks in advance.

[sbrown]

You can use a void to cut out a rectangular roof that has used the new slope tools in 2008. so can you make it rectangularly, then in plan create a void(opening) and cut out the curve shape.

[sbrown]

Actually looking at it again it looks like a simple sloped ref. plan with a sweep thats path follows that ref. planes slope, then void out what you don't need.

[duvalsf]

the best way to accomplish this roof is by using a mass in an in place created roof family. after you create the mass with the right shape and slope you can do the roof by face command and it will work. we use this method for very complex shapes at my office.

[Tobie]

It would be nice to be able to do a sweep with curves in more that one plane. Still is a reminder that if it is hard to model in Revit, it will be hard (expensive) to construct.

[Scott D Davis]

Another example where a loft (sweep a changing profile along a linear or curved path) would really help.

[AP23]

Another example where a loft (sweep a changing profile along a linear or curved path) would really help.

Well Scott, you have your work cut out for you.

[Wes Macaulay]

I would create the loft form in AutoCAD and import it into an in-place roof family...

[Tobie]

We only have Revit in the office. Sounds wrong saying you need to use Autocad to do something you want in Revit.

[Wes Macaulay]

Well, it could be done with a slope arrow to get the roof sloping more or less in the direction you want to get the look you want. Lofts often create geometry that's expensive to build, though that should not keep us from using lofts if that's what the design really needs!