How to slope a roof 2 ways?

[dcsank]

I need to slope a roof 5 degrees one way and 5 degrees the other. When I try to do this with define slopes, it creates a ridge or hip where the 2 slopes meet. I want the whole roof to continually slope in both directions. It has to be roof because its actually a canopy system and I'm using curtain walls and I need the curtain wall grids to still be 3' orthogonally apart from bird's eye view

[EATREVITPOOPCAD]

5 percent = 0.6" / 12"

To do this do the following:

• Architecture tab -> Roof button -> select level -> draw a rectangle
• Select 2 of the lines and uncheck the Define Slope checkbox
• select the lines you DID NOT select in the previous step, and enter a slope of  0.6" / 12" in the properties (It will change it into a fraction after you enter)

[dcsank]

Yea this exactly what I did at first. It creates a ridge or hip where the 2 slopes meet (also 5 degrees can simply be entered as 5 in slope). So imagine a plane - I tilt it 5 degrees one way first then tilt the whole thing again 5 degrees in the other direction - this is what I'm trying to achieve

[EATREVITPOOPCAD]

Ah I see, Thanks for teaching me about the % input never knew!

I would create an in-place mass (or a plane technically) and then use the roof by face command.

[dcsank]

I think I just found out how to do this although the gridlines don't look precisely orthogonal. I followed a reply here: https://forums.autodesk.com/t5/revit-architecture-forum/roof-slope-in-2-directions-with-the-same-ang... with the crazy equation = 2*tan(8.0°)/SQRT(2) and I changed it to 5 degrees. Then I had to rotate the gridlines 45 degrees. Works but if someone else has a better solution let me know - thanks

[ToanDN]

Create a bigger roof rotated 45 degree with one way slope, enter this formula to the slope =5*pi()/180*sqrt(2) , then use a vertical opening to cut it to shape.

[RDAOU]

@dcsank 

See GIF below

Use a Mass in Place >> Apply roof by Face

[barthbradley]

You might have an easier go of it using the Roof by Extrusion Method.  Food for thought.

Create a Roof by Extrusion | Revit 2020 | Autodesk Knowledge Network

[dcsank]

I know need to slope the roof 5 degrees in one direction and 10 degrees in another. I still want to create the roof like I outlined in my last response but need a different formula.

[barthbradley]

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@dcsank wrote:

I know need to slope the roof 5 degrees in one direction and 10 degrees in another. I still want to create the roof like I outlined in my last response but need a different formula.

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Can you be a little more descriptive? Explain what you are trying to do now.  Maybe include some pictures.  

[dcsank]

I made exactly what I want in terms of sloping in a roof using simple trigonometry for inputs for the points below but this can't be changed to a slope glazing type. So now I need a formula that can do this to use as slope within the footprint edit tool

 

[barthbradley]

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@dcsank wrote:

I made exactly what I want in terms of sloping in a roof using simple trigonometry for inputs for the points below but this can't be changed to a slope glazing type. So now I need a formula that can do this to use as slope within the footprint edit tool

 

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Within the footprint sketch? Why don't you make a parametric Mass to Host the Sloped Glazing to? 

[ToanDN]

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@dcsank wrote:

I made exactly what I want in terms of sloping in a roof using simple trigonometry for inputs for the points below but this can't be changed to a slope glazing type. So now I need a formula that can do this to use as slope within the footprint edit tool

 

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If you already have the roof above modeled, then simply create an in-place mass surface based in that roof, then create a curtain system by face from the mass surface.  If you don't know how, share the file here.

[Sidetracked]

A simple work around is to create a floor with the same properties, materials etc as the roof then use modify sub elements to add calculated elevations to the corner points.

[colinqBYUV9]

Simplest way by far is to include a slope arrow. No need for anything tricky, just need to know the pitch angle and the direction of the pitch.

[Sidetracked]

Very hard to do with a slope arrow if you are wanting two different pitches and the roof is rectangular not square. Didn't realise but you can edit a roof the same way as a floor by way of modifying sub elements.

[SteveKStafford]

Saw your replies and then realized this thread is almost exactly a year old 🙂 I was thinking the same thing with a slope arrow. I just experimented with slope values until the slope annotation reported 5 degrees (really 4.96 but rounded off). For a rectangular roof (not square) we'd just have to calculate the fall for each side that "mattered" and then plot out the slope arrow in the direction the roof would "fall". A bit tedious but doable.