Skip to main content
search

Together we create and sustain a better world

Welcome to Tonkin + Taylor - an award-winning environmental and engineering consultancy.

 
 
 

Help shape a sustainable future

Join a team where you can leave a legacy and make a positive impact.

 
 

The latest news, views, and more

Explore our perspectives on the future of infrastructure, environment, and sustainability.

1
1

Making a difference for communities and the environment

With offices across Australia and New Zealand, Tonkin + Taylor is committed to creating sustainable outcomes that benefit our clients, communities, and the environment. Through embedding sustainability and resilience into infrastructure design and delivery, we can unlock the potential of every project and drive a step change in industry innovation.

Projects

For over 60 years, Tonkin + Taylor Group has been at the forefront of environmental, engineering, digital, and advisory solutions. We partner to provide sustainable ground solutions.

View our featured projects below, and see how we are creating and sustaining a better world:

Insights

Stay up to date with the latest news, ideas, and perspectives from Tonkin + Taylor and our team of industry leading experts.

Join us – together we create and sustain a better world.

Ready to make your mark with Tonkin + Taylor?

Explore Careers
TitleSummaryCategoriesLinkhf:doc_categorieshf:doc_authorhf:doc_tags
Waves and pathways: a data driven approach to site-specific overtopping analysis

The Te Ara Tupua Ngā Ūranga ki Pito-One Project comprises a 4.5 km shared (pedestrian/cycling) pathway between Ngā Ūranga and Pito-One in Te Whanganui-a-Tara, Wellington with dual outcomes of rail/road …

Waterwater-aubeetham-eddie-au chan-jonathan-au flocard-francois-au paine-michael-au shand-tom-d-au taylor-verity-au2023-au
Waves and pathways: a data driven approach to site-specific overtopping analysis

The Te Ara Tupua Ngā Ūranga ki Pito-One Project comprises a 4.5 km shared (pedestrian/cycling) pathway between Ngā Ūranga and Pito-One in Te Whanganui-a-Tara, Wellington with dual outcomes of rail/road …

Waterwater-aubeetham-eddie-au chan-jonathan-au flocard-francois-au paine-michael-au shand-tom-d-au taylor-verity-au2023-au
Vegetation for wave overtopping mitigation : a laboratory and numerical investigation

Modern-day coastal engineering faces two key challenges: firstly, providing adequate protection under anthropogenic increases in sea level, and secondly, reducing environmentally detrimental engineering practices that are further driving changes to …

Waterwater-aublakely-holly-au shand-tom-d-au whittaker-colin-au2023-au
Greening the grey – incorporating ecological enhancement into the Te Ara Tupua pathway

The Te Ara Tupua Ngā Ūranga ki Pito-One (Ngauranga to Petone) Project comprises a 4.5 km shared (pedestrian/cycling) pathway between Ngā Ūranga (Ngauranga) and Pito-One (Petone) in Te Whanganui-a-Tara, Wellington. …

Waterwater-aubell-jacqui-au bull-leigh-au burke-sean-au hetet-len-au miller-aaron-au paine-michael-au shand-tom-d-au2023-au
Innovative design approaches on a major transport infrastructure project at the coast : the Te Ara Tupua experience

Delivery of major transport infrastructure projects at the coast requires a careful balance between numerous project drivers, including cost, program, environmental, regulatory and stakeholder considerations. These often-conflicting drivers have the …

Waterwater-aufoster-mark-au shand-tom-d-au2023-au
Using physical model testing to inform coastal design in complex wave environments

The 10 km stretch of foreshore between two of New Zealand’s largest cities Wellington and Hutt City is a crucial infrastructure corridor combining cycleway, road and rail, as well as …

Waterwater-aublanchard-leandre-au chan-jonathan-au flocard-francois-au paine-michael-au shand-tom-d-au2023-au
A multi-model workflow for assessing multi-scale beach dynamics

Urban beaches in semi-sheltered harbor environments are highly valued public spaces that require detailed understanding of coastal dynamics for appropriate management. Understanding the dynamics these environments is challenging due historic …

Waterwater-aubeetham-eddie-au blakely-holly-au kennedy-david-m-au mccarroll-jak-au perry-ben-au shand-tom-d-au2023-au
Ōpōtiki Harbour development – innovation in environmental management plans

The Ōpōtiki Harbour Development (“OHD”) is the first river port to be constructed in over 100 years in New Zealand. Te Whakatōhea have developed an offshore mussel farm and onshore …

Waterwater-auhansen-reuben-au jones-hayley-au partner-lance-d-au wyeth-david-au2023-au
Xbloc and earthquakes – a multi-modal approach to determining revetment performance and repair

The use of single layer, concrete armour units for coastal edge protection in place of rock is becoming increasingly common. Revetments constructed from these units can provide benefits of a …

Waterwater-auchan-jonathan-au davis-brian-au flocard-francois-au kennedy-andrew-i-au paine-michael-au shand-tom-d-au storie-luke-b-au taylor-verity-au yohannes-mikias-au2023-au
Wave overtopping of coastal infrastructure in New Zealand: field measurement techniques and triggers for adaptation

Wave overtopping occurs as waves pass over the coastal edge and flow onto the land behind. This can result in a hazard to vehicles and pedestrians and flooding or damage …

Waterwater-auquilter-peter-w-au shand-tom-d-au whittaker-colin-au2023-au
Ōpōtiki Harbour development – construction challenges at the end of a sand spit

The Ōpōtiki Harbour Development involves stabilising the entrance of the Waioeka River to allow reliable and safe access for maritime activity. Te Ara Moana a Toi (“A path to the …

Waterwater-aumurray-scott-au partner-lance-d-au pearce-grant-w-au wyeth-david-au2023-au
Future proofed tunnels at Karang-a-hape Road Station

Karangahape Road Station will be a new underground station on the Contract C3 of City Rail Link project in Auckland. The C3 comprises of 3.5 km twin-tunnel underground rail underneath …

Land + Buildingsland-buildings-auhoward-j-c-au howard-katerina-au2021-au
Shear behaviour of a heavily-overconsolidated claystone deposit

Claystone deposits are commonly intercepted in road slope cuttings, for example in Southern Queensland and thus the understanding of the shear behaviour of these deposits is important for geotechnical engineers …

Land + Buildingsland-buildings-audissanayake-ajith-au sivakumar-siva-au wijeyakulasuriya-vasantha-au2023-au
Geotechnical application and benefits of performance-based design

The New Zealand Building Code (like many others) is a performance-based standard; however, the application of performance-based design is rare in practice. Typical design practice considers the capacity of individual …

Land + Buildingsland-buildings-aurobinson-james-au storie-luke-b-au van-ballegooy-sjoerd-au2023-au
Design and construction of rammed aggregate piers for Te Kaha – Canterbury’s new multi-use arena

Geopier Rammed Aggregate Piers® (RAPs) are a ground improvement technology that creates a densified column of aggregate surrounded by a stiffened matrix soil. This paper describes the design and construction …

Land + Buildingsland-buildings-aubowen-hayden-au2023-au
Performance and sustainability options assessment of a building with a concrete raft foundation overlying liquefiable soil

Communication and interaction between the project structural and geotechnical engineers are critical to obtain an efficient building solution for the site, building owner and occupants. This is particularly important at …

Land + Buildingsland-buildings-auguy-mcdougall-au jamie-thompson-au mark-thomas-au sjoerd-van-ballegooy-au2022-au
Optimisation of a falling toe for river mouth scour protection – results from a physical model study

River mouths are often highly dynamic environments, fluctuating in location and depth with riverine and coastal processes. Where river training structures restrict the river to a fixed location, these structures …

Waterwater-aubruce-w-melville-au colin-whittaker-au eddie-beetham-au grant-w-pearce-au jonathan-clarke-au josh-joubert-au lance-d-partner-au tom-d-shand-au zihao-tang-au2021-au
Co-design of an innovative urban shellfish restoration project

A public open space on the Tāmaki Makaurau waterfront known as ‘Te Wānanga’ has been constructed as part of a wider transformation of the Tāmaki Makaurau downtown area. The project …

Waterwater-aualex-foxon-au alex-vink-au jarrod-walker-au marcus-cameron-au richelle-kahui-mcconnell-au susan-jackson-au2021-au
Design of controlled modulus columns without load transfer platform

Ground improvement by means of Controlled Modulus Columns (CMCs) usually involves the construction of a Load Transfer Platform (LTP) over the CMCs, especially for construction of low embankments over soft …

Land + Buildingsland-buildings-auwilliam-t-eom-au2022-au
Temporarily permanent – creating the stage for the 36th Americas Cup

In June 2017 Emirates Team New Zealand defeated Oracle Team USA, seizing the opportunity to host the 36th America’s Cup on the Waitematā Harbour in Tāmaki Makaurau Auckland. Auckland last …

Waterwater-aubridget-allan-au jennifer-hart-au joe-greene-au niksa-sardelic-au tom-d-shand-au william-ingle-au2021-au
Physical modelling of complex overtopping flows at Ōhau Point, Kaikōura and development of mitigation measures

A magnitude 7.8 earthquake struck the Kaikōura coastline in November 2016 causing widespread uplift and landslides closing State Highway 1 and Main North Rail Line. Ōhau Point was the location …

Waterwater-aufrancois-flocard-au mathieu-deiber-au matt-j-blacka-au patrick-knook-au steve-procter-au tom-d-shand-au2021-au
Hydrodynamic modelling of tsunami inundation behaviour in urban environments

Tsunami pose a significant risk to many urban centres in New Zealand. Having methods to assess the extent and flow regimes of tsunami allow the development of appropriate mitigation measures. …

Waterwater-aupablo-higuera-au scott-murray-au tom-d-shand-au2021-au
Developments in the mapping of coastal erosion susceptibility/hazards

Areas susceptible to coastal erosion have traditionally been mapped as lines on a map. This was based on single values that were derived using a ‘building block’ approach. More recently, …

Waterwater-aumarcus-cameron-au michael-paine-au susan-jackson-au2021-au
Marine habitat enhancement and fauna management at Cobham Drive, Wellington

Cobham Drive, Wellington, is the site of a newly constructed footpath and cycleway with 430 m of associated erosion protection in the form of rock revetment. Habitat enhancement over and …

Waterwater-aumarcus-cameron-au michael-paine-au susan-jackson-au2021-au
Wave-structure-soil interaction for Te Wānanga, Auckland’s new waterfront

Te Wānanga, Auckland’s new waterfront public space, is part of the Downtown Infrastructure Development Programme, which aimed to revitalise the waterfront of downtown Auckland through a series of interconnected projects. …

Waterwater-aualex-vink-au andrew-brown-au emma-bullivant-au luke-b-storie-au2021-au
The use of Trigger Action Response Plans to mitigate wave overtopping hazard on coastal infrastructure

Wave overtopping of coastal infrastructure such as rail, road and shared pathways can be hazardous to users and potentially threaten structural integrity and reliability. A Trigger Action Response Plan (TARP) …

Waterwater-aufrancois-flocard-au patrick-knook-au peter-w-quilter-au richard-reinen-hamill-au tom-d-shand-au2021-au
Rawene Reserve landslips emergency response and stabilisation

The Rawene Reserve landslips occurred in 2017 and resulted in the partial loss of a sealed carpark behind the Mokoia Road shops in Birkenhead, Auckland. The landslips are inferred to …

Land + Buildingsland-buildings-aujohn-seward-au simon-farquhar-au2022-au
How calm is calm? Exploring the effect of the categorisation of calm winds on defining offensive odour risk.

Assessment of offensive odour risk in accordance with Environment Protection Authority of Victoria (EPA) Publication 1883 Guidance for assessing odour, June 2022 (EPA Publication 1883) is based on the downwind …

Waste + Resource Recoverywaste-resource-recovery-auiain-m-cowan-au suk-yi-lo-au2022-au
Anchor investigation in weak, soft, mudstone to assess the impacts of flush type and potential of underream methods

When installing anchors in weak argillaceous rocks selecting appropriate ultimate grout to ground bond strength parameters can be challenging, yet critical to ensure safe and rational anchor design. Literature notes …

Land + Buildingsland-buildings-audanny-b-beasant-au2022-au
Real world observations for sulfur dioxide and particulate matter due to the reduction in marine sulfur fuel content from Marpol Annex VI

On 1 January 2020, the allowable sulfur content of marine fuels, as capped under Annex VI of the International Convention for the Prevention of Pollution from Ships (MARPOL), fell from …

Waste + Resource Recoverywaste-resource-recovery-audanny-b-beasant-au2022-au
Ōpōtiki Harbour Development Project – Design of New Zealand’s first river training works in over 100 years

The Ōpōtiki Harbour Development Project involves stabilising the entrance of the Waioeka River to allow reliable and safe access for maritime activity. This project is the first major river training …

Waterwater-aueddie-beetham-au francois-flocard-au grant-w-pearce-au guy-mcdougall-au jonathan-clarke-au lance-d-partner-au patrick-knook-au tom-d-shand-au2021-au
Combined numerical and physical modelling of waves for Ōpōtiki Harbour entrance design

The Ōpōtiki Harbour Development Project involves stabilising the entrance of the Waioeka River to allow reliable and safe access for maritime activity. This project is the first major river training …

Waterwater-aueddie-beetham-au francois-flocard-au grant-w-pearce-au jonathan-clarke-au lance-d-partner-au patrick-knook-au tom-d-shand-au2021-au
Development of a prognostic meteorology for atmospheric dispersion modelling – a comparison of the various options used in Australia and New Zealand

Provision of accurate meteorology both at the surface and upper air levels is a key input for atmospheric dispersion models. At locations which are distant from observation stations in Australia …

Waste + Resource Recoverywaste-resource-recovery-auiain-m-cowan-au richard-chilton-au2022-au