---
url: https://qsteelcad.com/en/blog/topic/regulations
language: en
alternate: https://qsteelcad.com/blog/konu/mevzuat
updated: 2026-11-06
publisher: RENMAE Teknoloji ve Yazılım LTD. ŞTİ.
---

# Light steel regulations in Turkey, article by article

The 2027 regulation and TBDY 2018 Chapter 10, with article numbers and in plain language.

Light steel rules in Turkey sit in two texts: Chapter 10 of the Turkish Building Earthquake Code 2018 (TBDY 2018) and the Regulation on the Design, Calculation and Construction Principles of Light Steel Buildings, which takes effect on 1 January 2027.

These articles read both texts from a manufacturer's and an engineer's point of view. Every value is given with its article. They do not replace the official text.

## [Turkey's light steel regulation takes effect on 1 January 2027: what changes?](https://qsteelcad.com/en/blog/turkey-light-steel-regulation-2027)

The regulation published on 17 May 2026 brings the design, calculation and construction principles of light steel buildings into a single text. We compared its annex with Chapter 10 of the Turkish Building Earthquake Code 2018 (TBDY 2018); here is what manufacturers and designers need to know.

## [Galvanizing in light steel: 180 or 275 g/m² for each of the 81 provinces?](https://qsteelcad.com/en/blog/zinc-coating-by-province-turkey)

The 2027 light steel regulation sets the zinc coating amount province by province. Which class is your site in, when is the province table not enough, and how is a cut surface repaired? The full table is in this article.

## [Light steel panel rules 2027: 0.9 mm studs, 625 mm spacing and bridging](https://qsteelcad.com/en/blog/light-steel-panel-rules-2027)

Section 6 of the regulation concerns everyone who produces panels directly. From stud section to bridging screws, from cabinet loads to the 10.5 metre limit, we have collected all the panel rules in one article.

## [Light steel material rules 2027: 250 MPa, the DX grade ban and screw requirements](https://qsteelcad.com/en/blog/light-steel-material-rules-2027)

After 1 January 2027, which sheet can you use, in what thickness, with which screws? We read Sections 2 and 3 of the regulation from the point of view of buying coil.

## [TBDY 2018 Chapter 10: braced panel rules, clause by clause](https://qsteelcad.com/en/blog/tbdy-2018-chapter-10-braced-panels)

What does the light steel chapter of the Turkish Building Earthquake Code ask for in braced panels? We read every clause, from classification and net section checks to bridging and diaphragms, with its meaning on site.

## [Light steel floor rules 2027: deflection table, 8 Hz and web stiffeners](https://qsteelcad.com/en/blog/light-steel-floor-rules-2027)

A floor is now calculated not only for strength but also for deflection and vibration. We have collected the limits in Section 7 of the regulation, the 8 Hz requirement and the stiffener plate rules in one place.

## [Fire design in light steel: what does Section 11 of the regulation require?](https://qsteelcad.com/en/blog/light-steel-fire-design-turkey)

For the first time, fire design for light steel buildings has its own section. Test or calculation? How much strength does steel lose at 500 °C? The tables and methods are in this article.

## [Modular and hybrid light steel buildings: the 14 metre limit and the 10% rule](https://qsteelcad.com/en/blog/modular-and-hybrid-light-steel-buildings)

The new regulation defines modular and hybrid buildings for the first time. How high can you go with modules alone, and which rule applies in a hybrid building? A summary of Section 12 is in this article.

## Frequently asked

### Which regulation applies to light steel buildings in Turkey?

TBDY 2018 Chapter 10 is in force today. From 1 January 2027 the Regulation on the Design, Calculation and Construction Principles of Light Steel Buildings also applies, in addition to TBDY for seismic design.

### Are the values in these articles up to date?

Each article shows its publication and update date. Check values against the official text on your design date before you decide.