ISO 834-1:2025
(Main)Fire-resistance tests — Elements of building construction — Part 1: General requirements
Fire-resistance tests — Elements of building construction — Part 1: General requirements
This document specifies a test method for determining the fire resistance of various elements of construction when subjected to fire exposure conditions, represented with standardized time-temperature curves. The test data thus obtained will permit subsequent classification on the basis of the duration for which the performance of the tested elements under these conditions satisfies specified criteria.
Essai de résistance au feu — Éléments de construction — Partie 1: Exigences générales
General Information
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Standards Content (Sample)
International
Standard
ISO 834-1
Second edition
Fire-resistance tests — Elements of
2025-05
building construction —
Part 1:
General requirements
Essai de résistance au feu — Éléments de construction —
Partie 1: Exigences générales
Reference number
© ISO 2025
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Contents Page
Foreword .v
Introduction .vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Symbols . 3
5 Test equipment . 3
5.1 General .3
5.2 Furnace . .4
5.3 Loading equipment .4
5.4 Restraint and support frames .4
5.5 Instrumentation .4
5.5.1 Temperature .4
5.5.2 Pressure .8
5.5.3 Load . .10
5.5.4 Deformation .10
5.5.5 Integrity .10
5.6 Accuracy of measuring equipment .11
6 Test conditions .12
6.1 Furnace temperature . 12
6.1.1 Heating curves . 12
6.1.2 Tolerances .17
6.2 Furnace pressure differential .17
6.2.1 General .17
6.2.2 Vertical elements .17
6.2.3 Horizontal elements .18
6.3 Loading .18
6.4 Restraint/boundary conditions .18
6.5 Ambient conditions.18
6.6 Deviation from specified test conditions .18
6.7 Calibration .19
6.8 Furnace atmosphere .19
7 Test specimen preparation . 19
7.1 Construction .19
7.2 Size .19
7.3 Number of test specimens . 20
7.4 Conditioning. 20
7.5 Test specimen verification . 20
8 Application of instrumentation .21
8.1 Temperature .21
8.1.1 Furnace thermocouples (plate thermometers) .21
8.1.2 Unexposed surface thermocouples .21
8.1.3 Roving thermocouple . 22
8.1.4 Interior thermocouples . 22
8.2 Pressure . 22
8.2.1 Furnaces for vertical elements . 22
8.2.2 Furnaces for horizontal elements . 22
8.3 Deformation . 22
8.4 Integrity . 22
8.4.1 Cotton wool pad . 22
8.4.2 Gap gauges . 23
iii
9 Test procedure .23
9.1 Restraint application . 23
9.2 Load application . 23
9.3 Commencement of test .24
9.4 Measurements and observations .24
9.4.1 General .24
9.4.2 Temperature .24
9.4.3 Furnace pressure .24
9.4.4 Deformation .24
9.4.5 Integrity .24
9.4.6 Load and restraints . . . 25
9.4.7 General behaviour . 25
9.5 Termination of test. 25
10 Performance criteria .25
10.1 General .
...
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