Appraisal number: 952 (2017)
Date issued: 15 Feb 2017
Adjustable Base Isolation Pier System
Description
The Adjustable Base Isolation Pier System is intended to isolate lightweight buildings from lateral earth movement during earthquake events. It utilises stainless steel springs and support and fixing components to connect the building to a concrete underslab, individual footings and timber piles.
Scope
The Adjustable Base Isolation Pier System has been appraised for use as a base isolation system within the following scope:
- With single or 2-storey, single unit (detached) buildings.
- Constructed on 150 mm or 300 mm concrete underslab in accordance with MBIE Technical Guidance Document section 15.4.4.
- With individual concrete pad or timber pile foundations suitable for good ground as defined in NZS 3604.
- With timber-framed floor, walls and roof designed and constructed in accordance with NZS 3604 or the subject of specific engineering design.
- With a light roof and light or medium wall cladding (as defined by NZS 3604).
- With a maximum floor live load of 1.5 kPa and deck live load of 2.0 kPa.
- Situated in NZS 3604 earthquake zones 1, 2, 3 and 4.
- Situated in NZS 3604 wind zones up to and including extra high.
All buildings incorporating the Adjustable Base Isolation Pier System must be the subject of specific engineering design for the base isolation system by a suitably qualified chartered professional engineer. The engineer is responsible for the incorporation of the Adjustable Base Isolation Pier System into their design in accordance with the instructions of ABI Piers Ltd.
Technical literature
- Design Features Report: Adjustable Base Isolation Pier System, 6 October 2016
- Adjustable Base Isolation Pier System Detail 1 (new build), version S3, 7 May 2017
- Adjustable Base Isolation Pier System Detail 1A (new build), version S4, 7 May 2017
- Adjustable Base Isolation Pier System Details 2 & 3, version S5, 9 April 2017
- Adjustable Base Isolation Pier System Detail 1 (repile option), version S6, 7 May 2017
- Adjustable Base Isolation Pier System Typical detail for crawl space more than 450 mm, S7, date 7 May 2017
- Adjustable Base Isolation Pier System Concrete pad foundation for use in NZS 3604 good ground, version S8, 29 November 2017
- Adjustable Base Isolation Pier System Timber pile for use in NZS 3604 defined good ground, version S9, 29 November 2017
- Adjustable Base Isolation Pier System Bracket detail for timber pile foundations for use in NZS 3604 defined good ground, version S10, 29 November 2017
Consenting instructions
Always refer to the Appraisal in full and the technical literature.