Earthquake Assessment

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We now have teams in Auckland and the Waikato who can carry out soil investigations from the basic NZS3604 soils assessments and inspections through to complex geotechnical investigation and engineering.

Our Chartered Geotechnical Engineer peer reviews all soils, stormwater, and wastewater design work and undertakes complex slope assessments, design work, and civil requests.

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WE DESIGN THE MOST ECONOMICAL SOLUTION FOR OUR

  • An Initial Seismic Assessment (ISA)
  • The IEP is a generic process governed by the date of construction of the building.
  • The earlier the construction, the worse it gets, the %NBS is likely lessened.
  • It is probable that the IEP for the building constructed prior to 1976 will be less than 33% NBS and a written report may not be worth completing unless required proof to satisfy bankers/insurers etc.
  • There are also issues depending on what the construction actually is and its condition.
  • If the client wants to keep the building and prove its worth if constructed prior to 1976 or thereabouts, they will need to do a DSA (Detailed Seismic Assessment) and determine if strengthening is required.
  • A DSA usually means we design the building again using known elements and determine those that need strengthening.
  • An Initial Seismic Assessment (ISA) includes an IEP (Initial Evaluation Procedure).
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Site Testing

  • Site testing and documentation to comply with NZS 3604. Where sites do not comply
    we have are able to offer foundation solutions that comply under Building Code B1.
  • CPT to 20 m
  • Sampling down to 20 m
  • Pore water pressure

Design

  • Piling
  • Subsoil investigation
  • Raft foundations
  • Backfill
  • Ground anchorage
  • Slope stabilization including soil nailing, and rock anchoring
  • Backfill
  • Subsoil investigation
  • Raft foundations

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Engineered

Solutions

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