New Zealand map Davis Ogilvie – Engineering, Surveying and Planning

Structural Engineering

Structural engineers ensure that buildings are strong and stable enough to handle appropriate structural loads, including assessing the materials used to build them, to make sure that they are safe for the people occupying them.

Our structural engineers have experience working on a wide range of projects. We work together with other professionals on projects ranging from a single beam for house alterations, high-end residential houses, commercial structures and seismic assessment of existing buildings.

We are experience in providing the following services:

  • Design of timber, cross laminated timber (CLT), steel, masonry and concrete structures
  • Design of foundation systems for TC1, TC2, TC3 and mass movement sites
  • Design of commercial and industrial buildings, including portal frame and tilt panel construction
  • Design of structural members within architectural houses on flat and sloping sites
  • Insurance and pre-purchase reports, to confirm the structural condition of residential, commercial and industrial buildings
  • Initial and Detailed Seismic Assessments (ISA or DSA) to determine the seismic strength in terms of a percentage of New Building Standard (%NBS).
  • Design of structural seismic strengthening to buildings
  • Damage reports and remedial works design for domestic, commercial and industry buildings
  • Design of retaining wall structures
  • Construction monitoring and project management

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Structural Design – Residential

TC1/ TC2/ TC3 foundations, retaining walls, beams, portal frames, bracing for new build, house alterations and earthquake repairs. A structural design is required by councils as part of the Building Consent application.

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Detailed design is assessed on a case-by-case basis and is dependent on site specific requirements. Design will be determined by geotechnical conditions, the proposed shape and form of the structure, architectural layout and preferred materials such as steel, timber, concrete or masonry.

The structural design will become part of the package submitted to council for the Building Consent Application process. We provide a Design Features report, structural drawings, calculations, a Producer Statement PS1 (Design) and LBP Memo.

We also carry out structural construction monitoring and provide a Producer Statement PS4 (Construction), which is required by councils, as part of the Code of Compliance application.

Due to the variable nature of each structural project we are unable to offer these services at a fixed price. We would be happy to discuss your project and provide a specific quote based on your requirements.

Seismic Strength Assessment – Commercial

Assessment of an existing commercial building to assess the seismic strength in terms of New Building Standard (%NBS) and earthquake damage.

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To determine seismic strength of a building and if it is earthquake prone or has elements which require strengthening.

An assessment of seismic strength can be carried out in the following ways:
a. Initial Evaluation Procedure (IEP). An IEP is a qualitative assessment based on existing construction details and visual inspection.
b. Detailed Seismic Assessment (DSA). A DSA is a quantitative assessment based on the calculated strength of the existing structural elements.

The above assessments will determine if a building is earthquake prone (<34% NBS) which will then require detailed design in order to strengthen the building.

Due to the variable nature of each structural project we are unable to offer these services at a fixed price. We have detailed some of our structural services below and would be happy to discuss your project and provide a specific quote based on your requirements.

Structural Inspection – Earthquake/ Insurance Residential

Structural inspections of earthquake damaged houses, review of geotechnical reports, engineering reports, subfloor inspection reports and repairs completed by EQC. This is needed to support EQC/ Insurance claims for the remediation of earthquake related damage. (Price varies)

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The structural inspection may include a visual assessment of the house, floor level survey, verticality survey of the walls, level survey of the door heads and windowsills. We also provide a crack map of damage to foundations and floor slabs (where visible). A subfloor camera survey and concrete core samples may be arranged with a sub-contractor, if needed.

Due to the variable nature of each structural project we are unable to offer these services at a fixed price. We would be happy to discuss your project and provide a specific quote based on your requirements.

Structural Engineering FAQ’s

Why you need a Structural Engineer

We can provide structural designs for new buildings, alterations to existing structures and damage repairs. Our structural engineers assist in determining any damage to your home or commercial building and make recommendations on how to best repair any damage found.



What we need from you

To enable us to provide the appropriate designs, we need architectural plans for the proposed building or alterations, geotechnical reports and a scope of work to describe what you need us to complete.

Does you carry out DEE assessments on commercial buildings?

Yes, we are able to complete both Initial Seismic Assessments (ISAs) and Detailed Seismic Assessments (DSAs) on low rise commercial properties.

Does you carry out earthquake damage assessments?

Yes, we have completed numerous assessments for homeowners, insurers and EQC.  Work includes inspections, reporting, peer review, preparing expert evidence and attending mediation, facilitations and court trials.

What sort of residential work do you carry out?

Our structural team carries out a full range of design for residential work, including new build, house alterations and removal of internal walls.

What regions of New Zealand does DO work in?

We have structural engineers in Christchurch and Nelson but undertake work over most of the South Island. We also have staff in Greymouth and Timaru that assist with projects on the West Coast and in the central South Island.



Alastair Wood

Technical Director, Structural Engineer
029 772 0171

Greg Clark

Technical Director, Structural Engineer
021 255 2287