Which Buildings Require Sprinklers in Turkey? A Decision Tree

Whether sprinklers are required does not come from a single number. The regulation ties the decision to a combination of four variables: occupancy class, building height, floor area, and the hazard or operational characteristics. So "above how many square metres do I need sprinklers" has no single answer.

The decision runs through four questions

1. What is the occupancy class? Requirements differ for residential, office, retail, assembly, healthcare, education, hotels, industry, storage and car parks. Whether occupants can evacuate unaided (healthcare and care facilities) is decisive.
2. Does the building fall into the high-rise class? Requirements tighten markedly for buildings classified as high-rise.
3. What are the floor and total areas? As area grows, so does the expectation of compartmentation and automatic suppression.
4. How hazardous is the activity? With flammable liquids, plastics storage, high-bay warehousing or a special process, the area threshold loses meaning and the hazard class takes over.

Beyond the requirement: why fit sprinklers anyway?

A significant share of projects are designed with sprinklers where they are not mandatory. The reasons are:

• Insurance premium and cover. The cover offered for an unsprinklered warehouse is very different from the same warehouse sprinklered; some risks are not insured at all without sprinklers.
• Business continuity. The difference between a fire brought under control and total loss of the facility is measured in days of lost production.
• Architectural flexibility. A sprinklered design can, in some cases, open the way to performance-based solutions on compartmentation and travel distance — subject to the authority's approval.
• Corporate standards. Multinational investors require sprinklers regardless of facility type.

What is required where sprinklers are not?

Without sprinklers the protection burden falls on the other layers: fire compartmentation, detection and alarm, smoke control, escape route design, hose reels and hydrants, portable extinguishers. None of these is a full substitute for automatic suppression, but together they can establish an acceptable level of risk.

Can protection be partial?

In some projects only the basement, car park or storage section is sprinklered. That is a workable approach for sections separated by fire compartmentation and assessed separately. The critical point is that the division between sprinklered and unsprinklered sections must be a real fire compartment; otherwise the sprinklered section's design has to account for fire arriving from the adjacent one.

How to justify it in the design report

1. Occupancy class and occupant profile.
2. Height status and the reasoning behind the classification.
3. Floor areas and the compartmentation arrangement.
4. Description of the activity, the goods stored and the storage height.
5. The provision the sprinkler requirement rests on; where not mandatory, the reason for fitting them voluntarily.
6. How the unsprinklered sections are protected.

Frequently Asked Questions

At what floor area do sprinklers become mandatory?

There is no single number. The decision depends on the combination of occupancy class, building height, floor area and the hazard of the activity; thresholds must be confirmed from the current regulation text.

Why fit sprinklers where they are not mandatory?

For insurance cover and premium, business continuity, the room they create for performance-based architectural solutions, and corporate investor standards.

Can protection be partial?

Yes, but the division between sprinklered and unsprinklered sections must be a real fire compartment. Otherwise the sprinklered section must account for fire arriving from next door.

Which layers matter most without sprinklers?

Fire compartmentation, detection and alarm, smoke control, escape route design, hose reels and hydrants, and portable extinguishers.

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