Fire Safety Engineering: EN Standards and Software Tools

Do the software tools we use in fire safety engineering actually help us achieve compliance with European standards, or do they simply make design calculations and modelling more efficient?

Fire safety engineering has evolved considerably in recent years. What was once largely centred on conventional drawings and prescriptive design requirements now involves a combination of numerical calculations, computational modelling, digital design tools and performance-based assessments.

Across Europe and Türkiye, European Standards (EN) and their nationally adopted equivalents, including TS EN standards, provide an important technical framework for the design and assessment of fire protection systems.

However, an important question remains:

If a software package can perform calculations in accordance with an EN standard, does that necessarily mean the resulting design is compliant?

To answer this, we need to look beyond the software itself and consider how different engineering tools relate to the standards governing fire safety design.

1. EN 12845: Sprinkler Systems and Hydraulic Calculation Software

EN 12845 is one of the principal European standards covering the design, installation and maintenance of automatic sprinkler systems.

Designing a sprinkler system involves several critical engineering considerations, including hazard classification, sprinkler spacing and positioning, design density, operating area, water supply requirements and hydraulic calculations.

Two software solutions are particularly relevant in this field.

FHC – Canute

FHC is a hydraulic calculation package developed for sprinkler installations and other water-based fire protection systems.

It provides calculation capabilities supporting European standards, including EN 12845 and EN 16925.

CYPEFIRE Hydraulic Systems

CYPEFIRE Hydraulic Systems allows engineers to model pipe networks, carry out hydraulic calculations and integrate sprinkler system design into a Building Information Modelling (BIM) workflow.

The manufacturer's documentation includes predefined design and checking options based on EN 12845:2016.

Both packages can improve consistency and efficiency throughout the design process.

Nevertheless, engineers must still verify any requirements of the applicable standard that are not explicitly covered by the software.

A successful hydraulic calculation is not, in itself, proof that an entire sprinkler installation complies with EN 12845.

2. EN 12101: Smoke Control and Pressure Differential Systems

Fire safety is not simply about controlling flames.

Smoke movement is often a decisive factor in determining whether escape routes remain tenable and whether firefighters can operate safely within a building.

The EN 12101 series addresses various aspects of smoke and heat control systems, including equipment requirements and system performance.

EN 12101-13:2022 is particularly relevant to the design, calculation, installation, acceptance testing and maintenance of pressure differential systems.

Several digital engineering tools can support assessments in this area.

FDS – Fire Dynamics Simulator

FDS uses Computational Fluid Dynamics (CFD) to simulate fire-driven fluid flows.

It can be used to investigate smoke movement, temperature distribution, airflow patterns and the effects of mechanical ventilation.

PyroSim

PyroSim provides a graphical environment for developing three-dimensional fire models and preparing FDS simulations.

It can help engineers assess different fire scenarios and investigate the performance of proposed smoke control arrangements.

Ventus

Ventus can be used to model airflow and pressure relationships within buildings, including scenarios involving pressure differential systems.

These tools can provide valuable evidence when assessing smoke control strategies against the relevant EN 12101 requirements.

However, an important distinction must be made:

Completing a CFD simulation does not automatically establish compliance with EN 12101.

The overall design, equipment specifications, system performance, commissioning procedures and acceptance testing must also be assessed against the applicable requirements.

3. EN 54: Engineering Software for Fire Detection and Alarm Systems

The EN 54 series plays an essential role in fire detection and fire alarm system design.

Its various parts establish technical requirements for fire alarm control and indicating equipment, detectors, alarm devices and other system components.

Guidance relating to system planning, design, installation, commissioning and maintenance, including CEN/TS 54-14 and relevant national provisions, is also important.

Manufacturers such as Siemens and Bosch provide dedicated engineering and configuration software for their fire detection systems.

Depending on the product and software platform, these tools may support:

Configuration of fire alarm control panels
Definition of detection zones
Programming of alarm and control scenarios
Management of input and output relationships
Commissioning, diagnostics and system testing

Although these functions are valuable, software configuration is only one part of achieving a compliant fire detection and alarm installation.

Detector selection and positioning, system architecture, certified equipment, cabling, functional testing and applicable national requirements must all be considered.

Ultimately, compliance depends on the performance and suitability of the complete system, rather than the capabilities of the configuration software alone.

4. Structural Fire Engineering: Eurocodes and SAFIR

Another important aspect of fire safety engineering is the ability of a structure to maintain its required performance when exposed to fire.

The fire design provisions of the Eurocodes provide essential technical guidance in this area.

Relevant standards include:

EN 1991-1-2: Actions on structures exposed to fire
EN 1992-1-2: Structural fire design of concrete structures
EN 1993-1-2: Structural fire design of steel structures

SAFIR is an engineering analysis tool used to investigate the thermal and mechanical response of structural elements subjected to elevated temperatures.

It can support assessments of steel and concrete structural members under fire exposure.

When carrying out these analyses, engineers must consider the applicable Eurocode provisions, material properties, loading conditions and relevant National Annexes.

As with other engineering software, reliable results depend on appropriate modelling assumptions and professional interpretation.

5. EN 13501: Fire Classification and Digital Design Coordination

The EN 13501 series provides the framework for classifying the reaction-to-fire and fire resistance performance of construction products and building elements.

Digital design platforms such as Autodesk Revit, AutoCAD and other BIM tools can help engineers manage fire performance information within coordinated building models.

For example, a BIM model may include specified fire resistance classifications for:

Fire doors
Compartment walls
Floors and structural elements
Fire-resisting partitions

This information can help design teams coordinate fire safety requirements across architectural, structural and building services disciplines.

However, assigning a fire resistance classification to an element within a BIM model does not demonstrate that the actual product or construction achieves that performance.

Fire resistance classifications must be supported by appropriate test evidence and classification documentation.

Digital design coordination and formal evidence of fire performance are therefore two separate, although closely related, aspects of the engineering process.

6. Evacuation Modelling: Pathfinder and Performance-Based Design

Safe evacuation remains one of the fundamental objectives of fire safety engineering.

Software such as Pathfinder can be used to model occupant movement and investigate evacuation performance under different building configurations and scenarios.

These assessments may consider overall evacuation times, congestion at exits, movement through stairways and the implications of alternative escape arrangements.

However, there is no single, universally applicable EN software certification that establishes the suitability of evacuation modelling tools for every European project.

Evacuation analysis must therefore be considered alongside national building regulations, project-specific acceptance criteria and recognised engineering methodologies.

Evacuation modelling should support, rather than replace, the regulatory assessment of means of escape.

7. Applying EN and TS EN Standards in Türkiye

In Türkiye, the Regulation on the Fire Protection of Buildings (Binaların Yangından Korunması Hakkında Yönetmelik) is one of the principal regulatory references for building fire safety.

Relevant Turkish Standards (TS), nationally adopted European Standards (TS EN) and other applicable technical specifications also play an important role in design and verification.

One particularly important consideration is the relationship between European standards and their national implementation.

The publication of a new EN standard does not necessarily mean that the same edition and provisions automatically apply to every project in Türkiye.

Before undertaking a design, engineers should establish:

The applicable national legislation
The relevant edition of the TS EN standard
Any additional project specifications
Requirements imposed by the competent authorities
The specific edition of the standard supported by the selected software

If a software package has been developed around an earlier edition of a standard, additional engineering checks may be necessary to address subsequently revised requirements.

This is particularly important when software-generated reports are intended to support formal design submissions or compliance assessments.

8. EN Standards and Engineering Software: A Practical Overview

The following table summarises the relationship between selected European fire safety standards and commonly used engineering tools.

The software listed above may support engineering activities associated with the relevant standards. This does not imply that each package automatically verifies compliance with every requirement of the corresponding standard.

9. Supporting an EN Standard Is Not the Same as Demonstrating Compliance

This is perhaps the most important distinction in the use of engineering software.

A software package may be capable of producing calculations based on a particular European standard.

However, demonstrating compliance requires a broader assessment of the complete design and its intended application.

Consider an automatic sprinkler system.

Even if the hydraulic calculations are correct, other requirements relating to hazard classification, equipment selection, installation arrangements and water supply performance must still be satisfied.

Similarly, a pressure differential system may achieve its target performance within a numerical model without necessarily delivering the same results once installed in a real building.

For this reason, software outputs should always be considered within a wider engineering framework:

Engineering calculations + Standard requirements + Technical documentation + Installation verification + Testing and validation

Each element contributes to demonstrating that the proposed fire safety measures are appropriate and capable of achieving their intended objectives.

Conclusion: Digital Engineering Within an EN-Based Fire Safety Framework

Digital transformation in fire safety engineering is about much more than adopting increasingly sophisticated software.

Its real value lies in the ability to make engineering decisions more transparent, traceable and technically defensible.

Tools such as FHC and CYPEFIRE can support sprinkler system design. FDS and PyroSim can provide insight into fire and smoke behaviour. Manufacturer-specific engineering platforms support the configuration of fire detection systems, while SAFIR offers analytical capabilities for structural fire engineering.

These tools can improve the efficiency and depth of engineering assessments, but they do not replace the requirements of applicable standards or the responsibility of the engineer.

The key professional skill is not simply knowing how to operate a software package. It is knowing how to question its assumptions, interpret its results and demonstrate that the proposed design satisfies the relevant EN and nationally adopted standards.

As digital engineering becomes more deeply integrated into fire safety design, this distinction will only become more important.

References and Further Reading

CYPE – CYPEFIRE Hydraulic Systems: https://info.cype.com/en/software/cypefire-hydraulic-systems/
Canute – FHC Hydraulic Calculation Software: https://canutesoft.com/
DIN – EN 12101-13:2022, Pressure Differential Systems: https://www.dinmedia.de/en/standard/din-en-12101-13/346340976
CEN/TS 54-14 – Fire Detection and Fire Alarm Systems: Guidelines for Planning, Design, Installation, Commissioning, Use and Maintenance.
Regulation on the Fire Protection of Buildings, Türkiye (Binaların Yangından Korunması Hakkında Yönetmelik).
Applicable TS EN standards and their current editions published by the Turkish Standards Institution (TSE).