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Further presentation of characterisation data depends upon the assessment procedure used:

1. for a differential equation method (where used) the variation of effective thermal conductivity as a function of temperature, together with the values of c_p and p_protection used as a basis for the calculation of effective thermal conductivity. Values of the modification coefficient (variable X method) or modified values of C_o (constant X method) as specified in the test standard;

2. for a numerical regression analysis (where used) the multiple linear regression equation including the modified regression coefficients;

3. for graphical presentation methods, presentations which include:

• for a given design temperature, the time to reach the design temperature as a function of section factor and for alternative thicknesses of fire protection material (see Figure B.3);

• for specified periods of fire resistance, the design temperature as a function of section factor and for alternative thickness of fire protection material (see Figure B.4).

10. Limits of applicability:

• range of fire protection thickness <7_pmin < d_p < d_pmax;

• the range of steel section factors: ...> A_m/V > ...;

• the maximum design temperature: ...;

• the maximum fire protection period:

• applicability to other steel sections than “I” or “H” sections;

• any other limitation.

B.5 Characterisation data for applied protection to concrete/profiled sheet steel composite members

6. Tests to be carried out:

• one large scale test with maximum protection thickness;

• one small scale test with minimum protection thickness;

• any additional small-scale test.

6. (iii) presentation of data

A graph is given of all relevant individual and mean temperature readings, as defined in the test standard, and used for classification and extension of test results.

10. presentation of characterisation data

The following data are given:

• the measured time for the characteristic temperature of the profiled steel sheet to rise to 350 °С for each thickness of fire protection material tested;

• the graphical plot of the measured time for the profiled steel sheet to rise to 350 °С against fire protection material thickness between its maximum and minimum thickness and at all intermediate thicknesses by interpolation (Figure B.5);

• the values and the plot of equivalent thickness ft_eq of concrete for each thickness of fire protection material between its maximum and minimum thickness (Figure B.6);

• the values and the plot of limiting exposure time for each thickness of the fire protection material between its maximum and minimum thickness.

10. Limits of applicability

• Minimum thickness of the profiled steel sheet: ...;

• maximum width of the rib (/_pt) on which the fire protection material is directly attached: ...;

• maximum height of the rib (h₂): ...;

• limitations regarding the type of profile;

• minimum concrete density: ...;

• maximum concrete density: ...;

• concrete strength classes: ...;

• concrete type(s): ...;

• minimum effective concrete slab thickness:

• any other limitation: ...

B.6 Characterisation data for applied protection to concrete filled hollow steel columns

6. Tests to be carried out:

• one loaded full size composite test column with minimum thickness;

• one unloaded small size test column with maximum thickness;

• any additional unloaded small size column;

6. (iii) presentation of data

A graph is given of all relevant individual and mean temperature readings, as defined in the test standard, and used for classification and extension of test results.

10. Presentation of characterisation data:

• the measured time for the characteristic temperature of the steel surface of the concrete filled hollow steel column surface to reach any end point defined in the test standard for each thickness of fire protection material tested.

• the graphical plot of the measured time for the characteristic temperature of the steel surface of the concrete filled hollow steel column to reach any end point defined in the test standard against fire protection material thickness between its maximum and minimum thickness and at all intermediate thicknesses (Figure B.7);

10. Limits of applicability:

• Minimum steel grade: ...;

• minimum wall thickness: ...;

• minimum cross section:

• for rectangular section: minimum width: ...;

• for circular section: minimum diameter: ...;

• minimum concrete density: ...;

• maximum concrete density: ...;

• concrete strength classes: ...;

• type(s) of concrete: ...;

• any other limitation: ...

B.7 Characterisation data for applied protection to timber members

6. Specification of the standard elements tested.

Three test series are defined as a function of the intended application of the test results:

• results to be applicable to floors and beams;

• results to be applicable to floors only;

• results to be applicable to beams only;

6. (iii) presentation of data;

10. presentation of characterisation data.

A graph is given of all relevant individual and mean temperature readings, as defined in the test standard, and used for classification and extension of results.

The characteristic values of the time to the start of charring and the charring rate for both loaded and unloaded test specimens, for each thickness of the fire protection system tested are given.

10. Limits of applicability:

minimum and maximum thickness of the protection: ...;

orientation of the protection: ...;

timber grade: ...;

minimum timber width: ...;

minimum timber depth: ...;

maximum fire duration time: ...;

any other limitation: ...

Key

1. test with minimum protection thickness d_v (mm)

2. test with maximum protection thickness d_f (mm)

Figure B.1 — Plot of temperature vs. depth in concrete (for minimum and maximum fire
protection thickness)

Figure B.2 — Plot of fire protection thickness vs. depth rf_pin concrete

Key

1 section factors

2 time to reach 0D

Figure B.3 — Plot of time to reach Oq (design temperature) vs section factor

Key

1 section factor

Figure B.4 — Plot of vs. section factor

Key

1. thickness of thermal insulation (mm)

2. time to rise to 350 °С (min)

Figure B.5 — Profiled steel sheet temperature

1

Key

1. thickness of thermal insulation (mm)

2. equivalent thickness of concrete (mm)

Figure B.6 — Determination of equivalent thicknesses of concrete for intermediate fire
protection thickness

Key

1. thickness of thermal insulation (mm)

2. time to rise to any end point

Figure B.7 — Profiled hollow steel column temperatureBibliography

1. EN 81-58, Safety rules for the construction and installation of lifts — Examination and tests — Part 58: Landing doors fire resistance test

2. EN 1363-1, Fire resistance tests — Part 1: General requirements

3. EN 1992-1-2, Eurocode 2: Design of concrete structures — Part 1-2: General rules —

Structural fire design

4. EN 1993-1-2, Eurocode 2: Design of steel structures — Part 1-2: General rules — Structural fire design

5. EN 1994-1-2, Eurocode 4 — Design of composite steel and concrete structures — Part 1-2: General rules — Structural fire design

6. EN 1995-1-2, Eurocode 5: Design of timber structures — Part 1-2: General — Structural fire design

7. EN 1996-1-2, Eurocode 6 - Design of masonry structures — Part 1-2: General rules — Structural fire design

8. ENV 1999-1-2, Eurocode 9: Design of aluminium structures — Part 1-2: General rules — Structural fire design

1 E) To be published. (EI

2 Fire from below floors is generally more critical than fire from above. However, in addition to the classification requirements from below, requirements can also be related to the thickness and quality of the flooring/floor and its subsequent design to safe guard against fire from above. This can also be applicable to other elements which are part of a floor, such as shutters.