Expansive Soils

In the November 2018 update MBIE proposed to revoke Simple House Acceptable Solution SH/AS1. MBIE agreed with feedback received during that consultation that the information in SH/AS1 for foundation design on expansive soils should be retained. MBIE is proposing to move this information into Acceptable Solution B1/AS1, making it a mainstream solution, and revoke SH/AS1.

They are now requesting feedback on this.

Good ground definition

MBIE are already thinking about the content for next bi-annual Building Code update programme in November 2019. This third update will continue MBIE’s work to support housing densification and catching up our Acceptable Solutions and Verification Methods to industry practise. The consultation package is looking at 22 possible changes, including the area described below.

MBIE wants to ensure suitable foundations are being used on ground that has the potential for liquefaction or lateral spread reducing the risk of damage to buildings and occupiers. This proposed change incorporates lessons learned from the Canterbury Earthquake Sequence, particularly about the effects of liquefaction and lateral spread. By revising the application of the ‘good ground’ definition, MBIE will provide greater clarity for how foundations are to be designed and constructed in regions across New Zealand that are subject to known liquefaction and/or lateral spread potential. The Acceptable Solution B1/AS1 will extend the regions where liquefaction and lateral spread of soil are excluded from the definition. The clarification being considered will allow the consistent application of the ‘good ground’ definition across New Zealand.

Giving feedback

View the full proposals and information on how to provide feedback on the MBIE website

You can also discuss with your colleagues here to help inform feedback by others.

Leave a Reply

More like this

blog-featured-img

Notice of AGM – 2023

Not enough permissions to view this content.

blog-featured-img

YGP Geotechnical Engineering Basic Posters Release

We are delighted to announce that all the posters have been finalised and are now available to the public. We…

blog-featured-img

Call for Nominations for NZGS Management Committee 2023

The affairs of the NZ Geotechnical Society are managed by the Management Committee on behalf of the members. We aim…

blog-featured-img

National Seismic Hazard Model

GNS Science has released the revised National Seismic Hazard Model (NSHM). The Structural Engineering Society of New Zealand (SESOC), the…

blog-featured-img

Earthquake Design for Uncertainty

Managing uncertainty in earthquake engineering has always been a key challenge for New Zealand engineers and the theme of the…

Placeholder Image Coming

Consultation on the Review of the Building Consent System – NZGS Submission

MBIE are currently consulting on options to improve the building consent system. This is an important review that aims to…

Placeholder Image Coming

Geotechnical  Engineering Practice Modules – Module 3

Presented by Misko Cubrinovski 27th June 2023