This document specifies requirements for assessment of the mechanical strength of metal profiles incorporating a thermal barrier having mechanical performance depending on their intended use. It also specifies the tests to determine the characteristic values of mechanical properties of the thermal barrier profile and to assess the effect of different conditionings of the thermal barrier on the mechanical performance of the connection. This document does not apply to thermal barriers which do not give a contribution to the mechanical resistance of the profiles. This document is applicable to thermal barrier profiles designed mainly for windows, doors, screens and curtain walls. This document does not apply to thermal barriers made only of metal profiles connected with metal pins or screws. This current edition of EN 14024 will supersede EN 14024:2004. Differences in test procedures between the two versions will not lead to significant differences in test results. Therefore, existing test results according to EN 14024:2004 are considered as equivalent to new test results according to the current edition of EN 14024.<\/p>\n
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| 2<\/td>\n | undefined <\/td>\n<\/tr>\n | ||||||
| 6<\/td>\n | European foreword <\/td>\n<\/tr>\n | ||||||
| 7<\/td>\n | 1 Scope 2 Normative references <\/td>\n<\/tr>\n | ||||||
| 8<\/td>\n | 3 Terms and definitions Table 1 \u2014 Temperature categories and test temperature Figure 1 \u2014 Schematic diagram of mechanical design systems <\/td>\n<\/tr>\n | ||||||
| 9<\/td>\n | Figure 2 \u2014 Examples of mechanical design systems Type B <\/td>\n<\/tr>\n | ||||||
| 10<\/td>\n | Figure 3 \u2014 Examples of geometric design type 1 (symmetrically loaded profile) <\/td>\n<\/tr>\n | ||||||
| 11<\/td>\n | Figure 4 \u2014 Examples of geometric design type 2 (nearly symmetrically loaded profiles with eccentricity \u03b1 = a\/b \u2264 5) <\/td>\n<\/tr>\n | ||||||
| 12<\/td>\n | Figure 5 \u2014 Examples of geometric design type 3 (asymmetrically loaded profiles with eccentricity \u03b1 = a\/b > 5) <\/td>\n<\/tr>\n | ||||||
| 13<\/td>\n | Figure 6 \u2014 Examples of geometric design type 4 (non-symmetrically loaded profiles) <\/td>\n<\/tr>\n | ||||||
| 14<\/td>\n | 4 Symbols and abbreviations <\/td>\n<\/tr>\n | ||||||
| 18<\/td>\n | 5 Requirements 5.1 General <\/td>\n<\/tr>\n | ||||||
| 19<\/td>\n | Figure 7 \u2014 Transfer of the self-weight of the infill element to the vertical profile by mechanical means 5.2 Thermal barrier with mechanical functions <\/td>\n<\/tr>\n | ||||||
| 20<\/td>\n | 5.3 Mechanical resistance <\/td>\n<\/tr>\n | ||||||
| 21<\/td>\n | Table 2 \u2014 Mechanical properties to be evaluated by testing <\/td>\n<\/tr>\n | ||||||
| 23<\/td>\n | 5.4 Static proof 6 Tests 6.1 General 6.1.1 Test specimens 6.1.2 Test temperature 6.1.3 Mechanical test equipment 6.1.4 Pre-test conditioning <\/td>\n<\/tr>\n | ||||||
| 24<\/td>\n | 6.2 Effects of different conditionings of the thermal barrier on the mechanical performances of the connection 6.2.1 Generalities 6.2.2 Performance after immersion in water 6.2.3 Performance after exposure to humidity 6.2.4 Testing for brittleness <\/td>\n<\/tr>\n | ||||||
| 25<\/td>\n | 6.2.5 Testing of the creep factor under constant shear load 6.2.6 Testing of the creep factor under constant transverse tensile load 6.2.7 Performance after exposure to UV radiation (if applicable) <\/td>\n<\/tr>\n | ||||||
| 26<\/td>\n | 6.2.8 Testing for tensile cracks 6.3 Transverse tensile strength (Q) 6.3.1 Test specimens <\/td>\n<\/tr>\n | ||||||
| 27<\/td>\n | 6.3.2 Test procedure <\/td>\n<\/tr>\n | ||||||
| 28<\/td>\n | Figure 14 \u2014 Side view and front view of a test device (schematic) for determining the transverse tensile strength 6.3.3 Evaluation 6.4 Shear strength and elasticity constant (T, c) 6.4.1 Test specimens <\/td>\n<\/tr>\n | ||||||
| 29<\/td>\n | 6.4.2 Test procedure <\/td>\n<\/tr>\n | ||||||
| 30<\/td>\n | Figure 15 \u2014 Schematic side view (a) and top view (blow up) (b) of the testing device to determine shear strength and elasticity constant 6.4.3 Result types of systems with mechanical design system type A <\/td>\n<\/tr>\n | ||||||
| 31<\/td>\n | Figure 16 \u2014 Schematic view on a metal profile with thermal barrier under load <\/td>\n<\/tr>\n | ||||||
| 32<\/td>\n | 6.4.4 Test flow Figure 17 \u2014 Schematic flowchart for testing shear strength T and elasticity constant c 6.4.5 Special cases 6.4.5.1 Case 1 <\/td>\n<\/tr>\n | ||||||
| 33<\/td>\n | Figure 18 \u2014 Schematic side view (a) and top view (blow up) (b) of the testing device for special case number 1 6.4.5.2 Case 2 (double insulating zone) <\/td>\n<\/tr>\n | ||||||
| 35<\/td>\n | Figure 19 \u2014 Schematic side view (a) and top view (blow up) (b) of the testing device for special case number 2 6.4.6 Evaluation <\/td>\n<\/tr>\n | ||||||
| 36<\/td>\n | 6.5 Ageing 6.5.1 General 6.5.2 Method 1 = M1 6.5.2.1 Test method <\/td>\n<\/tr>\n | ||||||
| 37<\/td>\n | Figure 20 \u2014 Test device (schematic) for aging method 1 6.5.2.2 Evaluation Figure 21 \u2014 Method 1 Measurement of the remaining deformation \u0394h for M1 6.5.3 Method 2 = M2 6.5.3.1 Test method 6.5.3.2 Mechanical load cycle <\/td>\n<\/tr>\n | ||||||
| 38<\/td>\n | 6.5.3.3 Temperature cycle Figure 22 \u2014 Test device (schematic) for ageing method 2 Figure 23 \u2014 Method 2 – Load cycle <\/td>\n<\/tr>\n | ||||||
| 39<\/td>\n | Figure 24 \u2014 Method 2 – Temperature cycle – 12 h 6.5.3.4 Evaluation Figure 25 \u2014 Method 2 Measurement of the remaining deformation f for M2 6.5.4 Method 3 = M3 6.5.4.1 General 6.5.4.2 Test method <\/td>\n<\/tr>\n | ||||||
| 40<\/td>\n | 6.5.4.3 Evaluation 6.6 Characteristic values 6.6.1 Transverse tensile strength 6.6.2 Characteristic shear strength 6.6.3 Elasticity constant 6.6.4 Residual deformation \u0394h for M1 and deformation f for M2 6.6.5 Ageing effect, creep factor \u03c6c,s under constant shear load <\/td>\n<\/tr>\n | ||||||
| 41<\/td>\n | 6.6.6 Ageing effect, creep factor \u03c6c,t under constant transverse tensile load 6.6.7 Combined shear and tensile stress, design-factor \u03b3Rd 6.7 Test report 6.7.1 General <\/td>\n<\/tr>\n | ||||||
| 42<\/td>\n | 6.7.2 Test report on effects of different conditionings of the thermal barrier on the mechanical performances of the connection Table 3 \u2014 Effects of different conditionings of the thermal barrier on the mechanical performances of the connection 6.7.3 Test report on the mechanical resistance of the profile Table 4 \u2014 Characteristic values to be reported <\/td>\n<\/tr>\n | ||||||
| 44<\/td>\n | Annex A (informative) Static proof A.1 Actions <\/td>\n<\/tr>\n | ||||||
| 45<\/td>\n | A.2 Profiles without shear connection (type C) A.2.1 Flexural stress Table A.1 \u2014 Table of requirements for the Ultimate Limit State <\/td>\n<\/tr>\n | ||||||
| 46<\/td>\n | Table A.2 \u2014 Suggested (not compulsory) partial load factors for windows, doors and curtain walls framing members <\/td>\n<\/tr>\n | ||||||
| 47<\/td>\n | Table A.3 \u2014 Suggested (not compulsory) load combination factors \u03c8 for windows, doors and curtain walls framing members A.2.2 Transverse tensile strength A.2.3 Deflection <\/td>\n<\/tr>\n | ||||||
| 48<\/td>\n | Table A.4 \u2014 Table of requirements for the Serviceability Limits States <\/td>\n<\/tr>\n | ||||||
| 49<\/td>\n | A.2.3.1 Maximum limits on frontal deflection A.2.3.2 In plane deflection A.3 Profiles with shear connection (types A and B) A.3.1 General <\/td>\n<\/tr>\n | ||||||
| 50<\/td>\n | A.3.2 Metal profile sections A.3.3 Shear strength of the thermal barrier <\/td>\n<\/tr>\n | ||||||
| 51<\/td>\n | A.3.4 Transverse strength of the thermal barrier A.3.5 Deflection <\/td>\n<\/tr>\n | ||||||
| 52<\/td>\n | Annex B (informative) Extension of characteristic data for profile design B.1 General B.2 Shear strength T and transverse tensile strength Q B.3 Elasticity constant c, creep factor \u03c6c,s <\/td>\n<\/tr>\n | ||||||
| 53<\/td>\n | Figure B.1 \u2014 Schematic representation of thermal barriers <\/td>\n<\/tr>\n | ||||||
| 54<\/td>\n | Annex C (informative) Effective momentum of inertia of metal profiles with thermal barrier <\/td>\n<\/tr>\n | ||||||
| 55<\/td>\n | Figure C.1 \u2014 Load bearing performance of metal-plastic compound profiles in the case of : (a) an ideally rigid compound; (b) and (c) an elastic compound; (d) a loose compound in terms of shear stress. <\/td>\n<\/tr>\n | ||||||
| 57<\/td>\n | Figure C.2 \u2014 Schematic representation of the position of the axes through the centre of gravity and the moment of inertia of a compound profile and of the profile shells <\/td>\n<\/tr>\n | ||||||
| 58<\/td>\n | Figure C.3 \u2014 Simply supported beam loaded with a uniformly distributed load <\/td>\n<\/tr>\n | ||||||
| 59<\/td>\n | Figure C.4 \u2014 Simply supported beam subjected to a uniformly distributed temperature load <\/td>\n<\/tr>\n | ||||||
| 62<\/td>\n | Annex D (informative) Simple products which typically do not need a static proof by calculation D.1 General D.2 Simple product definition <\/td>\n<\/tr>\n | ||||||
| 63<\/td>\n | Figure D.1 \u2014 Typical thermal barrier profiles of windows, doors, and secondary constituent parts of curtain walls that can be verified according to the Annex D D.3 Mechanical properties D.3.1 General D.3.2 Condition 1 D.3.3 Condition 2 <\/td>\n<\/tr>\n | ||||||
| 64<\/td>\n | D.4 Static proof Table D.1 \u2014 Effective moment of inertia Ieff of the assembled profile <\/td>\n<\/tr>\n | ||||||
| 65<\/td>\n | Bibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" Metal profiles with thermal barrier. Mechanical performance. Requirements, proof and tests for assessment<\/b><\/p>\n |