New Zealand | Aotearoa Seismic Site Demand Table 2023 (NZSSDT-2023)

• Documentation: https://GNS-Science.github.io/TS1170.5-SDP
• GitHub: https://github.com/GNS-Science/TS1170.5-SDP

About TS1170.5

TS1170.5-SDP stands for NZ Technical Standard 1170.5 Seismic Demand Parameters.

This project contains the source code and configuration used to produce the tables published as part of TS1170.5:2025 by Standards NZ. These tables are derived from the NZ National Seismic Hazard Model 2022 Seismic Risk Working Group .

For more about TS1170.5, please see:

• TS1170.5:2025 IN PUBLICATION (link to come)
• NZSEE:Overview of TS 1170.5:2025 and changes from NZS 1170.5:2004
• TS1170.5:2024 DRAFT (PDF)

About this repository

This repository is also intended for use by NZ engineering community for seismic design calculations. For future revisions, it captures the entire processing pipeline we used to produce the TS1170.5-SDP design tables.

This project includes:

• User Orientation for more about the Seismic Demand Parameters (SDP) terminology and the organisation of the SDP tables.
• the SDP tables intended for publication by Standards NZ in CSV and PDF form. See reports/v2.
• the published artefacts, with a versioning system for traceability. See Versions.
• the original data as supplied from SRWG. See resources/v2.
• python code for translating from the source dataframe form into the final formats.
• documentation about the production process (aka the pipeline).
• Python functions for end-users to simplify use of the published datasets.