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Update No. 1 was published as notification that this is now a National Standard of Canada This PDF includes Update No. 1 Preface This is the first edition of CSA A123.21, Standard test method for the dynamic wind uplift resistance of mechanically

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1. Scope 1.1 This Code covers the requirements for equipment, preparation and methods of weld process control, inspection and testing, used in resistance welding of components or assemblies which form part of a structure which is designed to carry cal

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