Fire Resistance Rating Calculator

Assess fire resistance ratings for concrete, steel, and timber structural members. Calculate REI classification with standard fire curves and material-specific methods.

EN 13501-2 · EN 1992-1-2 · EN 1993-1-2 · EN 1995-1-2

Member

Member Type

Material & Geometry

Material

Geometry

Width (mm)

Depth (mm)

Exposed

Concrete Properties

Aggregate

Weight

Rebar Type

Axis Distance (mm)

Fire Scenario

Fire Curve

Target Period

Utilization (0.1-1.0)

Support

Temperature Profile

Fire gas temperature and member temperature over the fire duration

Fire Curve
Member Temp

Classification

EI 60

RLoad Bearing

EIntegrity

IInsulation

Detailed Checks

500°C Isotherm Depth96.8 mm

Residual Section106 x 403 mm

Rebar Reduction ks0.254

Concrete Reduction kc0.315

Capacity Ratio0.03