DIN EN 12871:2013-09

This European Standard provides methods for determining performance characteristics for concentrated loads and impact on wood-based panels used for structural floor or roof decking and for impact on wood-based panels used for wall sheathing. This standard takes the approach of type testing specific structures. This approach yields an optimised design since the results from the testing shall apply only to one specific design. This revision incorporates experiences from use, adopts the load area for concentrated load defined in EN 1991-1-1 and the evaluation methods from EN 1990. This European Standard specifies the procedure for determining the performance characteristics through type testing, of load-bearing wood-based panels fitted on: a) structural joists for decking: in flooring applications in load categories A, B, C and D; in roof applications in load categories H and I; for which type testing involves: punching shear under concentrated loading; vertical soft body impact; b) studs for walling application for which type testing involves: pendular soft body impact. Annex A lists modifications to EN 1195, particularly the contact area of the loading head that may be used for concentrated loading, Annex B provides proposals for national performance requirements for characteristics specified in this standard which are based on Eurocodes and national annexes and Annex C provides examples for a decking application in a floor and a roof. Compared with DIN EN 12871:2010-06, the title of the standard has been changed, because this standard now only deals with determining performance characteristics. In Annex B, proposals for national performance requirements are given; Annex B includes a new reduction factor for ultimate limit state; for soft body impact tests. 3 impact classes have been defined to describe the performance; they can be related to load categories as suggested in Annex B. This standard does not include testing of racking behaviour nor uniformly distributed loads as these are covered by testing according to EN 594 or calculation according to EN 1995-1-1 respectively. In Annex B, the possibility to increase the span in dependence of the roof slope has been included. The reference for the statistical evaluation of the results has been changed to EN 1058; the load pad used for point load testing is now 50 mm×50 mm in all cases. The committee responsible for this standard is NA 042-02-15 AA "Holzwerkstoffe - Spiegelausschuss zu CEN/TC 112 und ISO/TC 89" ("Wood-based panels - Mirror Committee of CEN/TC 112 and ISO/TC 89") at DIN.