Background to proposed changes to NZS 1170.5:2004

Standards New Zealand (2024). "Draft Technical Specification DZ TS1170.5: Structural Design Actions. Part 5: Earthquake Actions ‐ New Zealand”. Standards New Zealand, Wellington, NZ, 126pp.

Standards New Zealand (2004). "NZS1170.5: Structural Design Actions. Part 5: Earthquake Actions ‐ New Zealand”. Standards New Zealand, Wellington, NZ, 76pp. https://www.standards.govt.nz/sponsored-standards/building-standards/NZS1170-5

Standards New Zealand (2016). "NZS1170.5: Structural Design Actions. Part 5: Earthquake Actions ‐ New Zealand. Amendment No. 1”. Standards New Zealand, Wellington, NZ, 88pp.

Bradley BA (2025). “Deterministic caps and seismic hazard: Considerations in a New Zealand-specific context”. Bulletin of the New Zealand Society for Earthquake Engineering, 58(1):1-10. https://doi.org/10.5459/bnzsee.1692

Lee RL, Cubrinovski M and Bradley BA (2025). “Site classification methodology for TS 1170.5 design spectra”. Bulletin of the New Zealand Society for Earthquake Engineering, 58(1):11-39. https://doi.org/10.5459/bnzsee.1686

Millen MDL and Hare HJ (2025). “Development of provisions for simplified design of rocking foundations”. Bulletin of the New Zealand Society for Earthquake Engineering, 58(1):40-51. https://doi.org/10.5459/bnzsee.1659

Haymes K, Sullivan TJ and Hare HJ (2025). “Recommendations for the revision of the approach for seismic design of parts and components in New Zealand design standards”. Bulletin of the New Zealand Society for Earthquake Engineering, 58(1):52-72. https://doi.org/10.5459/bnzsee.1661

Francis TC, Sullivan TJ, Hulsey AM and Elwood KJ (2025). “Recommendations for the shape of the design response spectrum in the New Zealand seismic loadings technical specification”. Bulletin of the New Zealand Society for Earthquake Engineering, 58(2). https://doi.org/10.5459/bnzsee.1692

Hulsey AM, Elwood KJ, Horspool N, Gerstenberger MC and Sullivan TJ (2025). “Assessing the life-safety risk for the proposed Technical Specification (TS) 1170.5”. Bulletin of the New Zealand Society for Earthquake Engineering, 58(2). https://doi.org/10.5459/bnzsee.1690

Francis TC and Sullivan TJ (2025). “Simplified relationships between inelastic and elastic spectral acceleration demands for seismic design in New Zealand”. Bulletin of the New Zealand Society for Earthquake Engineering, 58(2). https://doi.org/10.5459/bnzsee.1664

DeLa Torre C, Cubrinovski M, Bradley BA and Bora S (2025). “PGA adjustment factors for nonlinear site-response effects on soft soil sites: Application to TS1170.5”. Bulletin of the New Zealand Society for Earthquake Engineering, 58(2). https://doi.org/10.5459/bnzsee.1727