Geotechnical engineering capabilities

At HD Geo, we provide comprehensive geotechnical engineering services focused on delivering smart, practical solutions that prioritize project success and ground safety. From ground investigation and risk assessment to construction monitoring and advanced design solutions, our team is dedicated to achieving reliable and efficient outcomes.

Guided by technical expertise, industry best practices, and a commitment to safety and quality, we ensure every project is executed with care and precision. With capabilities ranging from hazard mitigation and temporary works to seismic and foundation design, we’re here to bring smart thinking to your projects and ensure safe ground for people.

Ground investigation and risk assessment

  • Site assessments, including early identification and mitigation of geotechnical hazards

  • Engineering geological assessments, including landslide and rockfall mapping

  • Site investigation scoping, planning and management

  • Soil resistivity pitting, sample acquisition and NDM testing (thermal resistivity lab testing completed by subcontractor)

Construction Monitoring

  • Pre-construction contractor and tender evaluation

  • Earthworks specification, construction certification and reporting

  • Temporary works design including temporary cuts, piling rig and crane platforms

  • Construction observation (PS4), testing and certification

Analysis and design

  • Liquefaction analysis and remediation design

  • Geotechnically lead design of shallow and deep foundations

  • Seismic assessment of buildings and infrastructure

  • Retaining wall design, slope stability analysis and remediation design 

  • Geotechnical peer reviews (PS2)

  • Ground improvement investigation and design

  • Long term embankment settlement

  • Principles and execution of safety in design

Temporary Works

  • Piling rig and crane platform designs

  • Sheet piling and thrust block for pipelines and pump stations

  • Geotechnical inputs to trenchless technologies such as directional drilling

  • Temporary cut stability analyses

  • Assessing effects of dewatering such as ground settlement and potential for damage to assets nearby

Qualifications

  • CPEng

  • PEngGeol

  • NZTA ARL accreditation

  • NZTA Road inspectors certificate

  • CAA Part 102 certified for Drones

Expert work

  • Andrew Holland is experienced in hearings and mediation matters