Recommended Revisions to the Approach in NZS 1170.5:2004 for the Seismic Design of Parts and Components

Abstract

This report examines the current state of practice for the design for seismic loading of parts and components within buildings in New Zealand and the provisions recently developed by the Applied Technology Council subsequently adopted in ASCE 7-22. The findings of the research suggest that revisions should be made to Section 8 Requirements for Parts and Components of the New Zealand Standard NZS 1170.5:2004 Structural Design Actions, Part 5: Earthquake Actions. Updates to the parts and components approach are recommended, benefitting from insight provided through the recent ASCE 7-22 procedure and research in the literature. To gauge the performance of the parts and components approach with updates, comparisons are made with data from instrumented buildings and numerical models.