¿Qué datos necesito aportar para el cálculo de resistencia al fuego?

Para realizar el cálculo de resistencia al fuego, solo necesitamos: - Planos básicos de la estructura (perfiles, vigas, pilares). - Nivel de resistencia deseado (EI30, EI60, EI90…). - Temperatura crítica. Si no la conoces, nuestro equipo técnico te propondrá el valor adecuado según normativa y tipo de estructura. Con esa información, nuestro departamento técnico recalcula cada elemento bajo condiciones de incendio y define el espesor de pintura intumescente.

¿Cuánto tiempo tarda el estudio y la aplicación de la pintura intumescente?

El cálculo de resistencia al fuego se completa normalmente en 3–5 días laborales tras recibir la documentación. La aplicación de pintura intumescente en taller requiere un proceso de pintado y curado de 1–2 días, según el grosor requerido. Todo el material sale listo para montaje en obra.

¿Cómo protege la pintura intumescente a la estructura metálica?

La pintura intumescente reacciona al calor del fuego formando una espuma aislante que retrasa la transferencia térmica. Esto mantiene la temperatura del acero por debajo del límite, concediendo los minutos de resistencia al fuego requeridos.

¿La pintura intumescente necesita mantenimiento o recubrimiento adicional?

No, si se trata de un espacio interior, pero para las estructuras al exterior se requiere un esmalte de sellado y protección a la intemperie, pueden conseguirse grados de corrosión C1 hasta C5.

Fire Resistance Calculation

ENGINEERING AND DESIGN

Structural calculation

CALCULATION OF PURLINS
Z, C, ∑

Connection design and calculation

Schemplan design
(preliminary project)

IFC render and project

Executive manufacturing project

3D IFC model for assembly

FIRE RESISTANCE CALCULATION

Fire resistance calculation of steel structures in accordance with EN 1993-1-2 and DB-SI (CTE)

At Jansa Metal, we carry out the fire resistance calculation of steel structures, determining how many minutes each steel element of the structure can withstand under a fire scenario, in accordance with Eurocode EN 1993-1-2 and the Basic Document SI of the Spanish Building Code (CTE).

Once the required fire resistance time is defined with the client, we perform the structural recalculation under fire conditions, evaluating self-weight and load-bearing capacity of each element at high temperatures.
Based on this data, we determine the exact coating thickness needed for each profile to meet regulatory requirements.

Then, in our workshop, we apply the required intumescent paint to achieve the fire resistance rating demanded by the project (EI30, EI60, EI90, EI120…).

We’ve been solving metal structure challenges for over 40 years. We know how to do it.

Request your connection calculation and prepare your structure for today and for the future.

Benefits for your project:

Guaranteed code compliance

Safety and speed

Ready-to-assemble

Aesthetic finish

How do we do it?

How we approach fire resistance calculation and the subsequent intumescent paint application

Resistance planning: We work with you to define the required protection level.

Recalculation under fire conditions: We assess the self-weight and load-bearing capacity of each element at fire temperatures.

Coating thickness specification: Based on the results, we specify the required thickness of intumescent paint for each part to meet the designated fire resistance time.

Application in the workshop: After shot blasting to Sa 2½ grade, we apply the fire-resistant primer to all profiles. Then, we apply the exact thickness of intumescent paint calculated for each element and allow full curing before packaging and shipping.

Material delivery: We send you all components ready for assembly — the structure arrives fully fire-protected, with no need for additional treatment on-site.

Protect your project against fire

Request your fire resistance calculation today.

Receive a precise technical report validated by our engineering team

Request your quote

FAQ’s

What data do I need to provide for the fire resistance calculation?

To carry out the fire resistance calculation, we only need:
– Basic structural drawings (profiles, beams, columns).
– Desired resistance level (EI30, EI60, EI90…)
– Critical temperature. If unknown, our technical team will suggest the appropriate value according to regulations and the type of structure

With this information, our technical department recalculates each element under fire conditions and defines the required intumescent paint thickness.

How long does the study and application of the intumescent paint take?

The fire resistance calculation is typically completed within 3–5 business days after receiving all documentation. The application of intumescent paint in our workshop takes 1–2 days, depending on the required thickness. All materials are delivered ready for on-site assembly.

How does intumescent paint protect the steel structure?

Intumescent paint reacts to fire heat by forming an insulating foam that delays thermal transfer. This keeps the steel temperature below the critical threshold, providing the required minutes of fire resistance.

Does intumescent paint require maintenance or additional coating?

No, not for indoor spaces. However, for outdoor structures, a sealing topcoat is required for weather protection. Corrosion protection levels from C1 to C5 can be achieved.

Ready for the First Step? Contact us!

Every great project starts with a conversation. Contact us, and find out how we can bring your idea to reality, with metal structures that are as solid as your expectations.

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