This site parameter finder is a free web tool intended to help New Zealand structural engineers
quickly search & retrieve NZS TS1170.5 site parameters for seismic design. Start by choosing a project location (address search or map click),
then select the appropriate site class, importance level, and design working life to view matched outputs
aligned with TS1170.5.
TS1170.5 Site Parameter Finder is made available without charge and in good faith. It is agreed by the user that no liability for its use, applicability or accuracy is accepted by the author. Professional care and judgement must be exercised, with relevant design knowledge and skill applied by the use.
This site uses essential cookies and collects approximate location data (country/region/city) for analytics and improvement.
Location Information
Location Information (NZ Privacy Act 2020)
This website collects approximate location information (such as country, region, or city) derived from your IP address.
This information is collected in accordance with the Privacy Act 2020 (New Zealand) and is used for legitimate purposes, including:
• Understanding how the tool is used across different regions
• Improving performance and reliability
• Anonymous usage analytics
We do not collect precise location data, do not track individuals, and do not use location information to identify you.
Location information is handled in aggregated form and may be processed by trusted third-party service providers solely for the purposes described above.
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Key Privacy Principles
In line with the NZ Privacy Act:
• We only collect information that is necessary for the operation and improvement of the tool
• Information is collected lawfully and fairly
• Data is used only for the purposes it was collected
• Reasonable steps are taken to protect the information
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Your Rights
Under the Privacy Act 2020, you have the right to:
• Request access to personal information held about you
• Request correction of that information, if applicable
Because only approximate, non-identifying location data is collected, there is generally no personal information that can be linked to an individual user.