# Asymmetrical pyramid aka hip roof

**URL:** https://discourse.shapr3d.com/t/asymmetrical-pyramid-aka-hip-roof/9513
**Category:** Modeling Questions
**Created:** [October 25, 2020, 4:28pm UTC](https://discourse.shapr3d.com/t/asymmetrical-pyramid-aka-hip-roof/9513 "2020-10-25T16:28:34Z")
**Posts on this page:** 14
**Page:** 1

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### Author: ![pghumphrey](https://avatars.discourse-cdn.com/v4/letter/p/d9b06d/32.png) [@pghumphrey](https://discourse.shapr3d.com/u/pghumphrey)
#### Post date: [October 25, 2020, 4:28pm UTC](https://discourse.shapr3d.com/t/asymmetrical-pyramid-aka-hip-roof/9513/1 "2020-10-25T16:28:34Z")

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Struggling to get this asymmetrical pyramid to have a square base. Your thoughts on process please. Thank you.

 ![image](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/2X/7/7519bce6657a3a9705438efd8ef7ce137b21f894.jpeg)

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### Author: ![JST](https://avatars.discourse-cdn.com/v4/letter/j/edb3f5/32.png) [@JST](https://discourse.shapr3d.com/u/JST)
#### Post date: [October 25, 2020, 4:51pm UTC](https://discourse.shapr3d.com/t/asymmetrical-pyramid-aka-hip-roof/9513/2 "2020-10-25T16:51:44Z")

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Just extrude a squre , draw tringles on the sides , then extrude from the body.

 ![image](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/2X/e/ec0e08530fd4599899d5476e13a508f0322faa20.png) ![image](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/2X/8/88c68c37f6f48e4f2e0a1ad1a867f0946fe9e064.png) ![image](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/2X/b/b3ec14df30c9cf6531ce545058e0edf35bd76206.png) ![image](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/2X/9/9bd80ac2839619278d42cdced5de127945fd0286.png)

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### Author: ![pghumphrey](https://avatars.discourse-cdn.com/v4/letter/p/d9b06d/32.png) [@pghumphrey](https://discourse.shapr3d.com/u/pghumphrey)
#### Post date: [October 25, 2020, 5:14pm UTC](https://discourse.shapr3d.com/t/asymmetrical-pyramid-aka-hip-roof/9513/3 "2020-10-25T17:14:13Z")

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I tried that but note the the bottom of the pyramid is not parallel to the ground plane.

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### Author: ![JST](https://avatars.discourse-cdn.com/v4/letter/j/edb3f5/32.png) [@JST](https://discourse.shapr3d.com/u/JST)
#### Post date: [October 25, 2020, 5:34pm UTC](https://discourse.shapr3d.com/t/asymmetrical-pyramid-aka-hip-roof/9513/4 "2020-10-25T17:34:15Z")

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You can move/rotate the piramid, maybe after it, project the square to the “ground”

 ![image](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/2X/6/60e91ec5e68c819f249d8ccce3f2821af8a02284.jpeg)

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### Author: ![TigerMike](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/tigermike/32/32650_2.png) [@TigerMike](https://discourse.shapr3d.com/u/TigerMike)
#### Post date: [October 25, 2020, 6:44pm UTC](https://discourse.shapr3d.com/t/asymmetrical-pyramid-aka-hip-roof/9513/5 "2020-10-25T18:44:32Z")

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Greetings,

JST is totally correct to have a square (or rectangular) bottom and still have an asymmetrical pyramid. Start with a box where the bottom is parallel to the ground plane and construct the pyramid accordingly as JST outlined. If that doesn’t work for you then maybe we are not understanding the problem. If that is the case, please elaborate further. The members here are always ready to help out.

-Mike

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### Author: ![pghumphrey](https://avatars.discourse-cdn.com/v4/letter/p/d9b06d/32.png) [@pghumphrey](https://discourse.shapr3d.com/u/pghumphrey)
#### Post date: [October 25, 2020, 7:13pm UTC](https://discourse.shapr3d.com/t/asymmetrical-pyramid-aka-hip-roof/9513/6 "2020-10-25T19:13:41Z")

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Thanks - I had tried that too. Here is the file if you want to give it a try.

[asymmetrical pyramid.shapr](https://discourse.shapr3d.com/uploads/short-url/xgQSNGofJXZMZmytS0dpD5epmPO.shapr) (1.09 MB)

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### Author: ![pghumphrey](https://avatars.discourse-cdn.com/v4/letter/p/d9b06d/32.png) [@pghumphrey](https://discourse.shapr3d.com/u/pghumphrey)
#### Post date: [October 27, 2020, 2:38am UTC](https://discourse.shapr3d.com/t/asymmetrical-pyramid-aka-hip-roof/9513/7 "2020-10-27T02:38:08Z")

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Still not having any luck. Anybody want to give it a try with the file I uploaded?

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### Author: ![JST](https://avatars.discourse-cdn.com/v4/letter/j/edb3f5/32.png) [@JST](https://discourse.shapr3d.com/u/JST)
#### Post date: [October 27, 2020, 5:35am UTC](https://discourse.shapr3d.com/t/asymmetrical-pyramid-aka-hip-roof/9513/8 "2020-10-27T05:35:43Z")

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Plese, drop a hand draw sketch for the better understanding, from the target.

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### Author: ![pghumphrey](https://avatars.discourse-cdn.com/v4/letter/p/d9b06d/32.png) [@pghumphrey](https://discourse.shapr3d.com/u/pghumphrey)
#### Post date: [October 27, 2020, 12:12pm UTC](https://discourse.shapr3d.com/t/asymmetrical-pyramid-aka-hip-roof/9513/9 "2020-10-27T12:12:14Z")

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Thanks in advance for your help. Here you go.

[roof sketch.pdf](https://discourse.shapr3d.com/uploads/short-url/1kADoo9hXw9BiM7G2eNpPwuA965.pdf) (815 KB)

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### Author: ![KPeter](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/kpeter/32/7644_2.png) [@KPeter](https://discourse.shapr3d.com/u/KPeter)
#### Post date: [October 27, 2020, 1:28pm UTC](https://discourse.shapr3d.com/t/asymmetrical-pyramid-aka-hip-roof/9513/10 "2020-10-27T13:28:58Z")

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Cool, thank you for the sketch. I made a step by step guide without exact dimensions:

1. Create the bounding box of the pyramid  

2. Extrude away the bottom of it in the right angle  

3. Draw the side view of the pyramid  

4. Draw the two drafted contour of the pyramid on the upper face of the existing geometry  

5. Sweep the triangles along the bottom edge of the shape  

6. And subtract them to get the final shape

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### Author: ![Oregonerd](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/oregonerd/32/8012_2.png) [@Oregonerd](https://discourse.shapr3d.com/u/Oregonerd)
#### Post date: [October 27, 2020, 3:31pm UTC](https://discourse.shapr3d.com/t/asymmetrical-pyramid-aka-hip-roof/9513/11 "2020-10-27T15:31:23Z")

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Worked construction for 20 years. Customs, hotels, industrial. 7/12 is quite steep so your drawing looks off to me. Why the 2’5 1/4"? Before or after the pitch are made? Do measure the pitch’s from level? Or from the base of your triangle? If from the bae of the triangle then this by making a cube and using 3 sides of it to sketch on:

 ![image](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/2X/c/ce0aedb9aa87fa348826e814afd52a72cb7022e7.jpeg)

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### Author: ![Oregonerd](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/oregonerd/32/8012_2.png) [@Oregonerd](https://discourse.shapr3d.com/u/Oregonerd)
#### Post date: [October 27, 2020, 3:35pm UTC](https://discourse.shapr3d.com/t/asymmetrical-pyramid-aka-hip-roof/9513/12 "2020-10-27T15:35:43Z")

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If you are measuring your pitch from level, same technique but changing the drawing plane to reflect the 20 to 2.437 (6.947 deg) foot rise to the 20’ sq base and offsetting the pitch angles to reflect that rise.

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### Author: ![Oregonerd](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/oregonerd/32/8012_2.png) [@Oregonerd](https://discourse.shapr3d.com/u/Oregonerd)
#### Post date: [October 27, 2020, 3:50pm UTC](https://discourse.shapr3d.com/t/asymmetrical-pyramid-aka-hip-roof/9513/13 "2020-10-27T15:50:37Z")

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Sorry for spelling/grammer, it’s early for me, working on second coffee, awake soon and grammer is a cracker. 😜

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### Author: ![pghumphrey](https://avatars.discourse-cdn.com/v4/letter/p/d9b06d/32.png) [@pghumphrey](https://discourse.shapr3d.com/u/pghumphrey)
#### Post date: [October 27, 2020, 7:46pm UTC](https://discourse.shapr3d.com/t/asymmetrical-pyramid-aka-hip-roof/9513/14 "2020-10-27T19:46:55Z")

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Thanks Peter - That did the trick. Figured there must be a simple way, but still learning my way around the program/tools
