Simulated Wind Driven Debris Impact Testing of Locker WK1225 ...

4 Department of Public Works | James Cook University5.3 Screen AssemblyThe mesh was face mounted onto the support frame. Around the perimeter and the cross member a50 x 50 x 20 angle section was used to clamp the mesh to the frame; the angle was screw fixed to theframe (through the mesh) with 14-20 x 45 mm self-drilling metal screws at 300 mm centres.6 ResultsA summary of the test results is presented in Table 1. Further details on the modes of failure anddeformation are provided in Appendix A.Table 1: Impact Testing ResultsTrialNo.DateTestedImpactLocationTestLoadImpactVelocity(m/s)ScreenDeflection(mm)Results and Observations1 17 Oct2008Corner of mesh A 33.8 NotmeasuredPass. Mesh strands fractured.Perforation area less than 2,000 mm 22 13 Nov2008Centre of mesh A 34.1 200 Pass. 5 mesh strands fractured.3 18 Nov2008Various(5 impacts)B ~34.0 NotmeasuredPass. Small indentations.Note: All impacts were performed on the same specimen7 ConclusionsA test program of simulated wind driven debris impact loading was performed on a Locker WK1225expanded mesh debris screen system.The methods and criteria of testing (in accordance with the Design Guidelines for Queensland PublicCyclone Shelters, Sep 2006 including amendment 1) have been presented. The results demonstrate theperformance of the screen when subjected to Debris Test Loads A and B.The debris screen system tested is deemed to satisfy the impact load performance requirements detailedin the Design Guidelines for Queensland Public Cyclone Shelters, Sep 2006.Prepared byCheckedMr. U. Frye Mr. C. J. Leitch Prof Y. HeResearch Engineer Manager Head of SchoolCyclone Testing Station Cyclone Testing Station School of Engineering and Physical SciencesJames Cook University James Cook University James Cook UniversityNote: This report may not be:• Published, except in full, unless permission for publication of an approved abstract has been obtained in writingfrom the Head, School of Engineering and Physical Sciences;• Or cited in any publication or advertising material, unless the proposed citation has been submitted to andapproved in writing by the Head, School of Engineering and Physical Sciences.