This document specifies a test and assessment method for determining the contribution of fire 
protection systems to the fire resistance of circular and rectangular solid steel bar. ISO 834-10 
and ISO 834-11 cover other section shapes such as angles, channels and flats. This document is not 
intended to be used for twisted wire or for cold or hot rolled steel bar which is primarily used for the 
reinforcement of concrete.
This document is applicable for the protection of solid bar up to a maximum diameter of 130 mm and 
in the case of rectangular bar the maximum side length shall be limited to 130 mm with a maximum 
aspect ratio of 2:1 against the shorter length side. Beyond these limits, the solid steel bars are covered 
in ISO 834-10 and ISO 834-11.
This document is intended to be used with any applied fire protection system, including multi-layered 
systems, that have demonstrated their integrity/stickability when tested on floor beams and hollow 
sections under load, and assessed in accordance with ISO 834-11.
This document does not incorporate results from a loaded test on a tension member. Guidance for 
conducting a fire test on a steel bar under a tensile load is provided in Annex C.
This document contains the fire test methodology to provide data on the thermal characteristics of the 
fire protection system when exposed to the standard temperature/time curve specified in ISO 834-1. It 
also contains an assessment method for the analysis of the test data.
The limits of applicability of the results of the assessment arising from the fire test are defined together 
with permitted direct application of the results to different steel types and sizes over the range of 
thicknesses of the applied fire protection system tested.
The assessment procedure is used to establish:
— on the basis of temperature data derived from testing steel bars, any practical constraints on the 
use of the fire protection system under fire test conditions, (the physical performance);
— on the basis of the temperature data derived from testing steel bars, the thermal properties of the 
fire protection system, (the thermal performance).
The limits of applicability of the results of the assessment arising from the fire test are defined together 
with permitted direct application of the results to different steel types and sizes of steel bar over the 
range of thicknesses of the applied fire protection system tested.
This document describes testing in both the vertical and horizontal orientations at the discretion of the 
sponsor.st edition 2019-05 Fire-resistance tests — Elements of building construction — Part 14: Requirements for the testing and assessment of applied fire protection to solid steel bar Essais de résistance au feu — éléments de construction — Partie 14: Exigences pour les essais et l'évaluation de la protection contre l'incendie appliquée aux barres pleines en acier Reference number ISO 834-14:2019(E) ？ ISO 2019 ISO 834-14: