Shed roofs/wall height

[RubbleBuilt]

Hi everyone,

 

First off, I apologize in advance for my limited experience and knowledge. I am a complete amateur and definitely not an architect or engineer. I’m trying to learn as I go, and I genuinely appreciate any patience or guidance.

 

I am currently designing a small cabin in Chief Architect and have run into an issue with my shed roof and wall heights that I cannot figure out.

 

Project specs:

 

- Cabin size: 30' x 16'

- Shed roof design

- Roof pitch: 1.5/12

- Intended wall heights:

  - Low wall: 8'

  - High wall: 10'

 

From my understanding, the math should work correctly:

 

- 16' span = 192"

- 192 ÷ 12 = 16

- 16 × 1.5" rise = 24" total rise

 

So unless I am misunderstanding something fundamental, a 1.5/12 pitch across 16' should naturally create approximately 2' of rise, meaning an 8' low wall and 10' high wall should be achievable.

 

However, in Chief Architect, I cannot seem to get the roof/walls to generate correctly.

 

What I have tried:

 

- Turned OFF “Flat Ceiling Over This Room”

- Set my top plate/wall height to 96"

- Set roof pitch to 1.5/12

 

The issue:

 

- My high wall ends up extending above and past the roof plane

- The generated wall height exceeds 10'

- One of the studs is showing around 121 13/16"

- The roof/wall intersection just looks incorrect overall

 

At this point, I suspect the issue is probably related to:

 

- Roof baseline settings

- Wall definitions

- Ceiling/roof relationships

- Or how Chief calculates automatic roof generation

 

rather than the roof geometry itself being impossible.

 

Could someone explain:

 

1. The proper way to set up a simple 8' to 10' shed roof in Chief Architect

2. Whether I should be adjusting baseline height instead of wall height

3. Why the high wall is extending past the roof plane

4. Whether my understanding of the roof math is correct

 

I would really appreciate any explanations, corrections, or guidance. I am still learning and trying to better understand both framing concepts and the software itself.

 

Premier x17 latest software version 

Windows, nvidia gtx5050 8gb, 16gb ram, I5 2.20ghz 

 

I will update this with plan/screenshots posting from mobile device 

 

Thank you very much for your time.

[y-g-m-n]

hard to answer without pictures and maybe copy of plan.

 

For the rooms what do you have ceiling height set at?

 

My suggestions to try is make all rooms with a wall height of

1.5" base plate + 3" for 2 top plates + 92.625 for pre-cut studs = 97.125"

Do not worry about high side at this point

Set roof pitch at your 1.5" per foot.

draw outer walls.

Then generate roof using the auto roof function.

 

IT will create attic walls above normal walls on high side.

 

See you say 16ft but is that out to out or inside or what?

 

Also, why so important to have exactly 10ft tall wall?

Studs come in 2 lengths for 10ft. 120" or 104 5/8"

 

PRetty much always have bottom plate and 2 top plates at 1.5" thick each.

So for your 10ft wall you have to buy 120" studs and cut everyone - adds labor cost and probably a wavy ceiling at edge.

 

 

 

 

 

 

[RubbleBuilt]

I understand and I apologize for not including screenshots/plans initially I was on mobile and didnt have a file. I’ll attach them to this reply so the issue is easier to see.

Right now, all room ceiling heights are set to:

• 96" finished ceiling
• 94 1/2" rough ceiling

I’ll also try your suggested setup and report back with the results to see if it resolves the roof/wall issue.

And yes, the 16' dimension is outside-to-outside overall.

For the wall height, accuracy between the plans and the actual build is important to me because the finished high wall will be exactly 10'. The framing plan is based around using 114 5/8" studs combined with 4 1/2" of plate material to achieve a true 10' wall height.

Normally I would agree about avoiding cutting every stud, but in this case I’ll likely be trimming them anyway. The “stud grade” material available from our local lumber yards has been inconsistent, and I’ve seen as much as 1/4" variance between pieces. I’d rather take the extra time to cut them uniformly and avoid ceiling inconsistencies later on.

809 showing bad roof.pdf 809 Telegraph Floor plan view.pdf 809 Telegraph render back.pdf 809 Telegraph render front.pdf

[RubbleBuilt]

[RubbleBuilt]

[RubbleBuilt]

plans .zip