“The Cassidy Construction team needed to go through many specific biosecurity procedures to protect the kauri from kauri dieback. I am grateful to them for taking on new learnings and methodologies. Congratulations.”
Alistair Smith, Auckland Council
Our mission at Lynn Reserve was to replace a wastewater line damaged by a slip during the Auckland Anniversary floods in 2023. To shore up the bank and protect the new pipe, we built a gravity retaining wall comprised of 600kg precast interlocking concrete blocks with backfilled anchor-like extenders.
Located 200m into a narrow native bush walk, the site posed access challenges, including a narrow timber bridge. For the most part we managed this by using compact machinery to transport materials in and spoil out, but to get our 3.5 tonne digger to the site we strengthened the 10-metre-long bridge by propping and bracing it and laying down steel plates.
The project operated under significant ecological restrictions to protect nearby kauri trees and the stream fauna. We consulted closely with Auckland Council experts, the local board and mana whenua to fully understand the context so we could complete our work safely and sensitively, and our high level of compliance with kauri dieback mitigation requirements was recognised by council staff as a blueprint for future sites. Self-performing all work except arborist and pump-over tasks allowed us to respond quickly to the dynamic site situation, including a fresh landslip during enabling works, and keep the project on schedule and on budget. The reopening of the Lynn Reserve walking track was celebrated with a karakia in front of the kauri trees to acknowledge the sensitive environment the works were delivered in.
“The Cassidy Construction team needed to go through many specific biosecurity procedures to protect the kauri from kauri dieback. I am grateful to them for taking on new learnings and methodologies. Congratulations.”
Alistair Smith, Auckland Council
Our mission at Lynn Reserve was to replace a wastewater line damaged by a slip during the Auckland Anniversary floods in 2023. To shore up the bank and protect the new pipe, we built a gravity retaining wall comprised of 600kg precast interlocking concrete blocks with backfilled anchor-like extenders.
Located 200m into a narrow native bush walk, the site posed access challenges, including a narrow timber bridge. For the most part we managed this by using compact machinery to transport materials in and spoil out, but to get our 3.5 tonne digger to the site we strengthened the 10-metre-long bridge by propping and bracing it and laying down steel plates.
The project operated under significant ecological restrictions to protect nearby kauri trees and the stream fauna. We consulted closely with Auckland Council experts, the local board and mana whenua to fully understand the context so we could complete our work safely and sensitively, and our high level of compliance with kauri dieback mitigation requirements was recognised by council staff as a blueprint for future sites. Self-performing all work except arborist and pump-over tasks allowed us to respond quickly to the dynamic site situation, including a fresh landslip during enabling works, and keep the project on schedule and on budget. The reopening of the Lynn Reserve walking track was celebrated with a karakia in front of the kauri trees to acknowledge the sensitive environment the works were delivered in.
