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Case study

Raiha Street Commercial Development

The site on Raiha street was a historic wreckers yard and landfill, which required extensive ground testing to de-risk the area for future commercial development. RDCL completed multiple testing and surveys across several years developing the site, including geotechnical sampling, drilling and geophysics.

What did we deliver?

RDCL delivered geotechnical ground models, batter slope designs, earthworks and pile designs throughout the development plan. Combining geophysics surveying with geotechnical design enabled better understanding of the site conditions, which lead to appropriate and cost-effective foundation plans for multiple structures on site.


RDCL’s broad range of skilled engineers and geologists combined with our in-house geophysics allowed a more robust offering to the client. This meant the ground risk on site was better understood and more appropriate designs were put forward as solutions.

Services and tools

Site Investigation, Ground Modelling, Ground Retention, Earthworks, Verification, Slope Stability, Foundation Design, Consents.

Surface seismic, ERT

Hawke’s Bay
Te Matau-a-Māui
+64 6 877 1652
8/308 Queen Street East,
Hastings, Hawke’s Bay,
New Zealand
Te Whanganui-a-Tara
+64 4 282 1564
Unit 2, 2 Raiha St, Elsdon,
Porirua 5022, Wellington,
New Zealand.
Tāmaki Makaurau
+64 21 884 190
Unit A3, 269a Mount Smart Rd, Onehunga, Auckland 1061, New Zealand.
+63 916 276 3133 (Admin)+63 917 184 5147 (Technical)
Unit 2106, Prestige Tower,
F. Ortigas Jr. Road, Ortigas Center, Pasig City 1605, Metro Manila, Philippines.