Aggregate Specifications Update (covering NZTA M03 and M04)

Presented by Grant Bosma, Principal Engineer, Surfacings,  NZTA Waka Kotahi

Thursday 24 July 2025

Aggregate Specifications Update
Grant is going to present on the updates to the NZTA Specifications:
M03: Subbase aggregates
M04: Basecourse aggregates
In addition, Grant will describe changes in some of the background documents that have also been updated.
 

Grant Bosma Bio
Grant Bosma has worked in the roading industry for over 40 years.  Most of his career has been with contractors in roles that included laboratory management, technical support and manufacturing.  More recently he has joined the NZ Transport Agency as Principal Engineer, Surfacings, providing technical representation and support to NZTA and other organisations.
Grant is involved with the review and update of NZTA’s pavement engineering technical specifications, particularly related to pavement materials and surfacings.  He brings his technical knowledge and industry experience to the review process ensuring updates are technically sound while practical to procure and construct.

Link to cloud recording. Passcode: bS.&i8mn