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BS EN 14437:2022

BS EN 14437:2022

$167.15

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 2022 38
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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
2 undefined
7 1 Scope
2 Normative references
3 Terms and definitions
8 4 Symbols and abbreviations
5 Sampling
6 Test conditions
7 Test material
8 Apparatus
8.1 Test rig
9 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
10 9.3 Determination of the location of the forces on the test roof
11 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
12 9.4.6 Determining the maximum uplift resistance
13 10 Test report
15 Annex A (informative)Example of test rig
16 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
17 B.3 Tiles with double lap
19 Annex C (informative)Examples of fixing patterns to be tested
C.1 General
20 C.2 Single lap interlocking tiles laid in straight bond
21 C.3 Single lap interlocking tiles laid in broken bond.
23 C.4 Tiles with double overlap
25 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
26 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
27 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
28 D.3.2 Calculation of mean value Rx and standard deviation sx
D.3.3 Calculation of characteristic value, Rk
29 D.3.4 Calculate design uplift resistance, Rd
30 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
31 E.2 Characteristic value of the resistance of fixings
32 E.3 Uplift resistance of partially or fully fixed roofing tiles for various roof pitches
33 E.4 Design uplift resistance for partially or fully fixed roofing tiles for various roof pitches
34 Annex F (informative)Example of roof tiles for which the test method is not applicable
35 Annex G (informative)Test rig commissioning and periodic calibrations

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BS EN 14437:2022
$167.15