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Forums >> Revit Building >> Technical Support >> How to create a Pyramid Roof？
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Joined: Sun, Feb 8, 2015
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I want to create a Pyramid Roof(also as known A square hip roof)，but there are something mistake on the edge
here is the plan and sections，you could see there **Two Cut - Square**
I create it with roof by footprint without define slope，and then add split line，but I found the edge is **Plumb cut**，and cannot change.
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=.= It seems something wrong with image upload
here's the Pic
http://ww1.sinaimg.cn/large/674bc276gw1ep30phhp2uj20di0713ze.jpg
http://ww1.sinaimg.cn/large/674bc276gw1ep30po5jpmj20w40gqdiw.jpg
http://ww1.sinaimg.cn/large/674bc276gw1ep30psxfixj20rd0f6q7o.jpg
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Joined: Tue, May 16, 2006
13079 Posts
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Don't split the roof, use the define slope. I konw, it doesn't make a pyramid - right? Like the first image below in this 9/12 roof. Here is the solution.
- Determine the overall height you want at the peak - image 2 (I used point elevations) - In this case, I will hold the 9/12 for the sides and modify the front slope to less slope which will be 18'-9" in 38' - 0".
- Also image 2 - Enter the slope for the front roof element by using a formula. (((GREAT TIP - YOU CAN USE A FORMULA ANYWHERE REVIT WANTS A DIMENTION!))))
Done
You use a similar process if you want to hold the front slope. Just calculate or build the roof as a single front slope only then find out how high it is.
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Sweet, …however, shouldn’t the slope formula be half of 38’, meaning =18’9/19’? Typo?
I was playing with the slope arrows. Having their tails and heads at the same elevations, should produce pyramidal roof, right? Well, …It doesn’t work! Any idea why? (2015 R2, Win7)
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Joined: Tue, May 16, 2006
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pijpiwo,
I should have included the dimensions. This square is 38' deep so the number is correct. I changed the front slope. The side slopes would be 1/2 the width wich was 50'. Just a stupid quick test roof to show this.
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I’m not sure if I follow you, but let’s put it this way: if the roof is 50’ by 38’, then the formula should be:
height A / half of 50’ or,
height B / half of 38’
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pijpiwo,
For some reason, you are having a mental block.
The front edge defines the slope of 18'-9" in the depth of 38'.
The side edges define the slope that is 18'-9" in 1/2 the width of 50' = 25' (( Checks - 9 / 12 ... 9"x25 = 225" = 18'-9"))
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FWIW, all I’m saying is this
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I only looked at one image - the last one - below and it looked like it is 1/2 a pyramid. 3 sided roof sloping to a point on one open side. My example was base on that image. For a true pyramid, you are correct.
Sorry for the confusion. Because of malware, I typically will never open other sites but I did this time. I don't understand why the poster didn't just include the images here. Then I would have see the other images.
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…lol, at some point I figured we must’ve not talked about the same thing.
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Dear WWHub and pijpiwo,thanks for your help,I'm very sorry for the misunderstand,it looks like my browser have some problem,so I can't upload any files include image,Very Sorry.
Mm,I think it could describe like this:
Pyramid Roof
thickness:120mm length 200mm width:2500 height:1200 all are External dimensions
My Twitter ID:OMGrz It is my pleasure to make your acquaintance 
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