BS EN 13381-9:2015 specifies a test and assessment method for determining the contribution made by fire protection systems to the fire resistance of structural steel beam I and H members in the horizontal plane containing openings in the web which may affect the structural performance of the beam. This European Standard applies to beams subject to 3 or 4 sided fire exposure.

For any beam with a single web opening or where the web openings are considered to be of small diameter in relation to the web depth the applicability of this European Standard needs to be determined by a structural engineer.

This European Standard applies to fire protection materials that have already been tested and assessed in accordance with EN 13381-4 or EN 13381-8. i.e. this European Standard cannot be used in isolation. Use of this European Standard requires the multi-temperature analysis (MTA) derived from EN 13381-4 or EN 13381-8 as the basis for determining thickness for beams with web openings. This MTA needs to be carried out on the web and bottom flange separately generating an elemental multi-temperature analysis (EMTA). The bottom flange EMTA may be used as the top flange EMTA when a beam is subject to 4 sided exposure.

This European Standard contains the fire test methodology, which specifies the tests which need to be carried out to provide data on the thermal characteristics of the fire protection system, when exposed to the standard temperature/time curve specified in EN 1363-1.


Cross References:
EN 1363-1
EN 1993-1-1
EN 1993-1-2
EN 1994-1-1
EN 1994-1-2
EN 10025-1
EN 13381-4:2013
EN 13381-8:2013
EN ISO 13943
ISO 13943
EN ISO 15614-1
ISO 15614-1
ISO 8421-2
EN 1365-3
EN 13501-1
EN 60584-1
Report RT1356


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