BS EN 15254-4:2018 pdf download

BS EN 15254-4:2018 pdf download.Extended application of results from fire resistance tests – Non-loadbearing walls
1 Scope
This document provides guidance and, where appropriate, defines procedures for variations of certain parameters and factors associated with the design of fire resistant glazed elements which have been tested in accordance with EN 1364-1:2015, and classified according to EN 13501-2. Extended application of fire resistant glazed elements is based on test evidence. This standard only applies to vertically installed fire resistant glazed elements. This standard does not apply to door sets and openable windows according to EN 1634-1 and does not apply to curtain walling – full configuration or curtain walling – part configuration according to EN 1364-3 and EN 1364-4. Glass block assemblies and paver units and channel-shaped glass as defined in EN 1051-1 and EN 572-7 are excluded. There is currently insufficient information available to enable rules for extended application to be developed for these products.
4 Principles
4.1 General principles
Extended application is a prediction of the expected fire resistance of fire resistant glazed elements. It may be based on interpolation between or extrapolation from test data. The fundamental consideration shall be that the fire resistant glazed element after extension would achieve the required fire performance if it were to be tested according to EN 1364-1:2015. The test results are applicable to similar constructions where one or more of the changes in the direct field of application in EN 1364-1:2015 and this standard are made, and it is the manufacturer’s responsibility that the construction continues to comply with the appropriate design code for its stiffness and stability. For test reports based on an edition of EN 1364-1 earlier than 2015, the direct field of application according to EN 1364-1:2015 may be applied. An increase in the classification time [e.g. from EI 30 min to EI 45 min] and/or changes to the fire performance classification [e.g. from E to EW) achieved in the reference test shall not be permitted by the application of the extended application rules. The only exception is detailed in 7.2. The overview regarding the relevant changeable parameters for extended application for fire resistant glazed elements is given in Table 1. Extended application reports shall be prepared according to EN 15725. Fire resistant glazed elements function as an integral system in which the individual components (glass, glazing system materials and framing system) are combined in such a way that they are effective in meeting the defined fire resistance criteria. However, in this document fire resistant glazed elements are separately characterized as the glazing system and the framing system (see example in Figure 1).