BS EN 14437:2022 – TC:2023 Edition

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Tracked Changes. Determination of the uplift resistance of installed clay or concrete tiles for roofing. Roof system test method

Published By	Publication Date	Number of Pages
BSI	2023	96

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Categories: 91.060.20 - Roofs, BSI

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This document specifies a test method to establish the uplift resistance of installed clay or concrete tiles for roofing, complying with the relevant product standard, EN 490 or EN 1304, which are unfixed or mechanically fixed to the substructure. NOTE The test method has been developed for clay or concrete tiles for roofing, but can apply to other discontinuously laid small elements, such as: slates; fibre cement slates; stones; and, adapted accordingly, to photovoltaic and solar thermal panels. The test method is applicable to mechanical fixings such as clips, hooks, screws and nails. The method is not applicable to fixed tiles having fixing patterns with less than every third tile fixed. The test method is not applicable to under and over tiles. Examples of these tiles are given in Annex F.

PDF Catalog

PDF Pages	PDF Title
1	30467240
59	A-30404303
60	undefined
65	1 Scope 2 Normative references 3 Terms and definitions
66	4 Symbols and abbreviations 5 Sampling 6 Test conditions 7 Test material 8 Apparatus 8.1 Test rig
67	8.2 Cables 8.3 Force measuring device 8.4 Monitoring device for displacement of the roofing tiles 8.5 Measuring device for weight 9 Test procedure 9.1 Measurement of the weight 9.2 Installation of battens, roofing tiles and fixings
68	9.3 Determination of the location of the forces on the test roof
69	9.4 Measurement of the uplift resistance 9.4.1 Calibration of the test equipment 9.4.2 Eliminate the effect of the load bars and cables 9.4.3 Trial test 9.4.4 Test series 9.4.5 Application of the force
70	9.4.6 Determining the maximum uplift resistance
71	10 Test report
73	Annex A (informative)Example of test rig
74	Annex B (normative)Specification of the arrangements of the tiles on the test rig and the arrangement of the tiles to be loaded B.1 Single lap interlocking tiles in straight bond B.2 Single lap interlocking tiles in broken bond
75	B.3 Tiles with double lap
77	Annex C (informative)Examples of fixing patterns to be tested C.1 General
78	C.2 Single lap interlocking tiles laid in straight bond
79	C.3 Single lap interlocking tiles laid in broken bond.
81	C.4 Tiles with double overlap
83	Annex D (informative)Calculation of uplift resistance D.1 Introduction D.2 Calculation of the uplift-resistance, taking into account the ultimate and serviceability failure modes separately D.2.1 General D.2.2 Ultimate failure mode, Ru D.2.3 Serviceability failure mode, Rs
84	D.2.4 Calculation of the mean values of Ru and Rs and the standard deviations su and ss. D.2.5 Calculation of characteristic values, Rk,u and Rk,s
85	D.2.6 Calculation of design value, Rdu and Rds D.3 Calculation of the uplift-resistance with all failure modes equivalent D.3.1 General
86	D.3.2 Calculation of mean value Rx and standard deviation sx D.3.3 Calculation of characteristic value, Rk
87	D.3.4 Calculate design uplift resistance, Rd
88	Annex E (informative)Calculation of the uplift resistance of clay or concrete tiles for roofing at various roof pitches, for a tested configuration E.1 Correction for the influence of the weight of the roofing tiles
89	E.2 Characteristic value of the resistance of fixings
90	E.3 Uplift resistance of partially or fully fixed roofing tiles for various roof pitches
91	E.4 Design uplift resistance for partially or fully fixed roofing tiles for various roof pitches
92	Annex F (informative)Example of roof tiles for which the test method is not applicable
93	Annex G (informative)Test rig commissioning and periodic calibrations