Section C1 – General Issues

The Seismic Assessment of Existing Buildings (the Guidelines) provides a technical basis for engineers to carry out seismic assessments of existing buildings within New Zealand.

Part C of the Guidelines describes the Detailed Seismic Assessment (DSA) process used to assess the seismic behaviour of a building. This is a more comprehensive assessment than the Initial Seismic Assessment process described in Part B. The DSA assesses the structural load paths within the building, the capacity of each structural element, the likely inelastic mechanisms, the global building response to earthquake shaking and the impact of secondary structural and critical non-structural building elements.

The DSA process is based on the Part A principles, which are an integral part of the seismic assessment process. Sections C1, C2, C3 and C4 provide an overview of the DSA process, the assessment procedures and analysis techniques, the earthquake demands and geotechnical considerations. Sections C5 to C9 provide recommendations for specific materials and Section C10 provides recommendations for secondary structural and non-structural elements. Each of these build on the common aspects within Sections C1 to C4 and Part A.

Summary and Download

Section C1 (download) provides an overview to the DSA process. It explains the objectives and sets out key steps for an assessment at this level, including specific guidance on the calculation of an earthquake score in the context of a DSA.

This section also covers the use of alternative assessment procedures, categorisation of assessments based on the influence of geotechnical aspects, the approach to building inspection and investigation, and reporting of DSA results. It also includes a recommended report template.

Contact

This web site has a searchable Knowledge Base with answers to questions about the Guidelines. Use article links in the Knowledge Base section to the right to view these.

If you have a question about Section C1, please check the Knowledge Base articles for Part C. If it is not addressed there, please refer to Writing Questions so your question can be efficiently addressed when you send it using the form below. Use the article links in the Knowledge Base section to the right for questions on Part A or Part B.

Version Control

Download Link Version Size Issued
Initial release (Current) 1 1 MB 10 October 2016
Consultation Draft 2016_C 1 MB 10 October 2016
Sector Briefing Draft 2016_SB 1 MB 30 June 2016