BS EN 13381-1:2020
$198.66
Test methods for determining the contribution to the fire resistance of structural members – Horizontal protective membranes
| Published By | Publication Date | Number of Pages |
| BSI | 2020 | 52 |
This document specifies a test method for determining the ability of a horizontal protective membrane, when used as a fire resistant barrier, to contribute to the fire resistance of standard horizontal structural building members as defined in 6.4.2.
Test of horizontal protective membrane installed under a specific non-standard floor should be tested according to EN 1365-2.
This document contains the fire test which specifies the tests which are carried out whereby the horizontal protective membrane, together with the structural member to be protected, is exposed to a fire test according to the procedures defined herein. The fire exposure, to the temperature/time curve given in EN 1363-1, is applied from below the membrane itself.
The test method makes provision, through specified optional additional procedures, for the collection of data which can be used as direct input to the calculation of fire resistance according to the processes given within EN 1992-1-2, EN 1993-1-2, EN 1994-1-2 and EN 1995-1-2.
This document also contains the assessment which provides information relative to the analysis of the test data and gives guidance for the interpretation of the results of the fire test, in terms of loadbearing capacity criteria of the protected horizontal structural member.
In special circumstances, where specified in national building regulations, there can be a need to subject the protection material to a smouldering curve. The test for this and the special circumstances for its use are detailed in Annex C.
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 structures, membranes and fittings.
This document applies only where there is a gap and a cavity between the horizontal protective membrane and the structural building member. Otherwise, the test methods in EN 13381-3, EN 13381?4 or EN 13381-5, as appropriate, apply.
Tests are intended to be carried out without additional combustible materials in the cavity.
Annex A gives details of assessing the performance of the ceiling when exposed to a semi-natural fire.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 2 | undefined |
| 10 | 1 Scope 2 Normative references |
| 11 | 3 Terms and definitions, symbols and units 3.1 Terms and definitions |
| 12 | 3.2 Symbols and units 4 Test equipment 4.1 General 4.2 Furnace |
| 13 | 4.3 Loading equipment 5 Test conditions 5.1 General 5.2 Support and restraint conditions 5.2.1 Standard conditions 5.2.2 Other support and restraint conditions 5.3 Loading conditions |
| 14 | 6 Test specimens 6.1 General 6.2 Fixtures and fittings |
| 15 | 6.3 Horizontal protective membranes 6.4 Structural building members supporting horizontal protective membranes 6.4.1 General principles |
| 16 | 6.4.2 Standard horizontal structural building members |
| 17 | 6.5 Properties of test materials 6.6 Verification of the test specimen |
| 18 | 6.7 Optional and additional plate thermometers within the cavity 7 Installation of the test construction 8 Conditioning 9 Application of instrumentation 9.1 General 9.2 Instrumentation for measurement of furnace temperature 9.3 Instrumentation for measurement of specimen temperature 9.3.1 General |
| 19 | 9.3.2 Instrumentation for measuring cavity temperature 9.3.3 Instrumentation for measuring surface temperatures |
| 20 | 9.3.4 Optional and supplementary instrumentation for measuring temperature 9.4 Instrumentation for measurement of pressure |
| 21 | 9.5 Instrumentation for measurement of deflection 9.6 Instrumentation for measurement of applied load 10 Test procedure 10.1 General 10.2 Furnace temperature and pressure 10.3 Application and control of load 10.4 Temperatures of test specimen 10.5 Deflection 10.6 Observations |
| 22 | 10.7 Termination of the test 11 Test results 11.1 Acceptability of test results 11.2 Presentation of test results |
| 23 | 12 Test report 13 Assessment 13.1 General |
| 24 | 13.2 Assessment of loadbearing capacity 13.2.1 General 13.2.2 Characteristic temperature curve: cavity temperatures 13.2.3 Characteristic temperature curve: surface temperatures (steel beams or steel/concrete slabs) 13.2.4 Application of method of limiting temperatures |
| 25 | 13.3 Assessment of data for calculation purposes 14 Report of the assessment |
| 27 | 15 Limits of applicability of the results of the assessment 15.1 Type of structural building member |
| 33 | 15.2 Type of concrete |
| 34 | 15.3 Type of steel beam 15.4 Type of steel/concrete composite structures |
| 35 | 15.5 Type of timber structure 15.6 Height of the cavity 15.7 Exposed width of test specimen 15.8 Properties of the horizontal protective membrane 15.9 Size of panels within the horizontal protective membrane 15.10 Fixtures and fittings |
| 36 | 15.11 Gaps between grid members and test frame or walls |
| 42 | Annex A (normative)Exposure to a semi-natural fire A.1 General A.2 Semi-natural fire source A.3 Test equipment A.3.1 The furnace |
| 43 | A.3.2 Preparation of fire source and heating conditions A.4 Test conditions A.5 Test specimen |
| 44 | A.6 Installation of the test specimen A.7 Conditioning A.8 Application of instrumentation A.9 Test procedure A.10 Test results A.11 Test report A.12 The assessment |
| 45 | A.13 The assessment report |
| 46 | Annex B (normative)Measurement of properties of horizontal protective membranes and components B.1 General B.2 Thickness of horizontal protective membrane and its components |
| 47 | B.3 Density of horizontal protective membranes and components thereof |
| 48 | B.4 Moisture content of horizontal protective membrane and components thereof |
| 49 | Annex C (normative)Test method to the smouldering fire (slow heating curve) C.1 Introduction C.2 Test equipment C.3 Test specimens C.4 Termination of test |
| 50 | C.5 Evaluation of the results |
