Geotechnical

Earthquake geotechnics & liquefaction

• 🇳🇿Analysis of Piled Bridges at Sites Prone to Liquefaction and Lateral Spreading in New ZealandNZ Transport Agency (Waka Kotahi)A Waka Kotahi research report on the analysis of piled bridge foundations at sites prone to liquefaction and lateral spreading in New Zealand — seismic design guidance for bridge piles in liquefiable ground.
• 🇳🇿Auckland Liquefaction Assessment and Liquefaction Vulnerability MapsAuckland Council · November 2021An Auckland Council technical report presenting a region-wide liquefaction assessment and liquefaction-vulnerability maps for Auckland — the data and method behind mapping where liquefaction could occur.
• 🇳🇿Canterbury Pile Design — Supplementary Guidance (Shallow Liquefaction)Ministry of Business, Innovation & Employment (MBIE) · September 2013MBIE supplementary guidance on pile design for shallow depths of liquefaction — a simplified procedure for checking deep-pile solutions for TC3 residential sites in Christchurch.
• 🇳🇿Earthquake Geotechnical Engineering Practice — Module 1: OverviewMinistry of Business, Innovation & Employment (MBIE) · November 2021Module 1 (Overview) of the MBIE/NZGS Earthquake Geotechnical Engineering Practice guidelines — an introduction to the guideline series and the role of geotechnical practice in seismic design.
• 🇳🇿Earthquake-Resistant Foundation Design (Module 4)Ministry of Business, Innovation & Employment (MBIE)Module 4 of the MBIE/NZGS Earthquake Geotechnical Engineering Practice guidelines — the earthquake-resistant design of building foundations.
• 🇳🇿Geotechnical Investigations for Earthquake Engineering (Module 2)Ministry of Business, Innovation & Employment (MBIE)Module 2 of the MBIE/NZGS Earthquake Geotechnical Engineering Practice guidelines — planning and carrying out geotechnical site investigations for earthquake engineering.
• 🇳🇿Green Zone Technical Category (TC1/TC2/TC3) FactsheetDPMC / Dept of Building and Housing · September 2010A Canterbury-rebuild information sheet explaining the residential "green zone" technical categories (TC1, TC2, TC3) — how each describes expected land performance in future earthquakes and the foundation implications.
• 🇳🇿Ground Improvement of Soils Prone to Liquefaction (Module 5)Ministry of Business, Innovation & Employment (MBIE)Module 5 of the MBIE/NZGS Earthquake Geotechnical Engineering Practice guidelines — ground improvement of soils prone to liquefaction.
• 🇳🇿Guidelines for Design and Construction of Geosynthetic Reinforced Soil Structures in NZ (NZTA RR 239)NZ Transport Agency (Waka Kotahi)A Waka Kotahi research report (RR 239) with guidelines for the design and construction of geosynthetic-reinforced soil structures (reinforced-soil walls and slopes) in New Zealand.
• 🇳🇿Improved Understanding of Liquefaction of Shallow FoundationsNatural Hazards Commission · December 2017An EQC-funded University of Auckland research report using laminar-box testing to better understand liquefaction effects on shallow foundations, for improved seismic design.
• 🇳🇿National Design Guidelines for Ground Improvement (NZGS)NZ Geotechnical Society (NZGS) · May 2017An NZGS symposium paper presenting national design guidelines for ground improvement of liquefaction-prone soils — developed in response to a Canterbury Earthquakes Royal Commission recommendation.
• 🇳🇿NZGS Liquefaction and Lateral Spread Reference PosterNZ Geotechnical Society (NZGS) · 2002An NZGS "geotechnical engineering basics" reference poster on liquefaction and lateral spread — a rough-guide summary of susceptibility, assessment methods and consequences.
• 🇳🇿Piles in Liquefying SoilsNatural Hazards Commission · April 2010An EQC-funded University of Canterbury research report on the analysis and design of piles in liquefying soils using the pseudo-static method — addressing the key uncertainties in that approach.
• 🇳🇿Planning and Engineering Guidance for Potentially Liquefaction-Prone LandMinistry of Business, Innovation & Employment (MBIE) · September 2017MBIE/MfE guidance on planning and engineering for potentially liquefaction-prone land — how the Resource Management Act and Building Act aspects fit together, following the Canterbury earthquakes.
• 🇳🇿Regional Liquefaction Vulnerability Assessment — Method StatementMinistry of Business, Innovation & Employment (MBIE) · 2017A method statement (by Tonkin + Taylor for MBIE) for regional liquefaction vulnerability assessment — the approach for assessing and mapping liquefaction vulnerability at a regional scale.
• 🇳🇿Repairing and Rebuilding Houses Affected by the Canterbury Earthquakes — Part AMinistry of Business, Innovation & Employment (MBIE) · November 2012Part A (Technical guidance) of MBIE's guidance on repairing and rebuilding houses affected by the Canterbury earthquakes — foundation assessment criteria and green-zone technical categorisation.
• 🇳🇿Repairing and Rebuilding Houses Affected by the Canterbury Earthquakes — Part C (Foundations)Ministry of Business, Innovation & Employment (MBIE) · June 2015Part C of MBIE's Canterbury guidance — assessing, repairing and rebuilding house foundations on TC3 land, addressing lateral spread and vertical settlement.
• 🇳🇿Residential Ground Improvement — Findings from Trials to Manage Liquefaction VulnerabilityNatural Hazards Commission · 2010An EQC report on findings from field trials of residential ground-improvement methods to manage liquefaction vulnerability in Christchurch.
• 🇳🇿The Seismic Assessment of Existing Buildings — Part C4: Geotechnical ConsiderationsMBIE & NZSEE (Seismic Assessment) · June 2016Part C4 (Geotechnical Considerations) of the national Seismic Assessment of Existing Buildings guidelines — the geotechnical inputs to detailed seismic assessment of earthquake-prone buildings.