---
url: https://qsteelcad.com/en/solutions/automatic-roof
language: en
alternate: https://qsteelcad.com/cozumler/otomatik-cati
updated: 2026-11-06
publisher: RENMAE Teknoloji ve Yazılım LTD. ŞTİ.
---

# Hip or gable roofs, with trusses and panels, in one window

Automatic roof puts shape, pitch, eave overhang and truss spacing in one window, and shows how many trusses and panels you'll get before anything is created.

## What is Automatic roof?

A command that adds the roof to a model with wall panels. It creates hip, gable or mixed roofs together with trusses, ceiling and roof panels, porch beams and columns. In the sample house, the hip roof gave 16 trusses, 22 roof panels and 22 ceiling panels; the gable roof gave 7 trusses, 12 roof panels and 12 ceiling panels.

1. **Choose the shape:** Hip, gable or mixed. For hip ends: half trusses or cut corner trusses.
2. **Enter pitch and eave:** Pitch in percent or degrees; eave overhang and heel height.
3. **Choose truss and panel sections:** Truss spacing; truss, roof panel and ceiling panel sections.
4. **Check the summary:** The bottom line shows truss, roof panel and ceiling panel counts, and joints that need an engineer's approval.
5. **Create the roof:** It's a single undo step: Ctrl+Z removes all of it.

Summary line of the hip roof for the sample house:

```
16 makas · 22 çatı paneli · 22 tavan paneli · sundurma: 2 kiriş, 1 kolon
⚠ 2 girder makas birleşimdeki makasları taşır: mühendis onayı gerekli.
```

## Articles

- [Lateral load path in a light steel building: from roof to foundation, step by step](https://qsteelcad.com/en/blog/lateral-load-path-roof-to-foundation)
- [Light steel floor rules 2027: deflection table, 8 Hz and web stiffeners](https://qsteelcad.com/en/blog/light-steel-floor-rules-2027)
- [Floor and roof diaphragms: who delivers the load to the braced wall?](https://qsteelcad.com/en/blog/floor-and-roof-diaphragms)

## Terms

- [Truss](https://qsteelcad.com/en/glossary#truss): The framed member that carries the roof. In QSteelCAD, Automatic roof places trusses by spacing and shows how many you will get before creating them.
- [Girder truss](https://qsteelcad.com/en/glossary#girder-truss): A truss that carries other trusses at a junction. QSteelCAD flags these joints as needing an engineer's approval.
- [Hip roof](https://qsteelcad.com/en/glossary#hip-roof): A roof that slopes on all four sides. In Automatic roof the end type can be half truss or cut truss.
- [Gable roof](https://qsteelcad.com/en/glossary#gable-roof): A roof that slopes on two sides. It is one of the shapes Automatic roof builds.

## Frequently asked

### Which plan shapes does it handle?

Rectangular plans as well as L, T, U and H plans. Small recesses don't split the roof; recesses that can join the roof are hatched in the plan and join it when clicked.

### Where do ceiling joists start?

From the wall in every room: first the initial spacing from the settings, then the regular spacing. It can be turned off in the ceiling panel menu.

### Does the program check truss adequacy?

The program flags joints such as girder trusses that need an engineer's approval. Structural adequacy is for the project engineer to approve.