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DST Newsroom


11 th Sep 2017

With only a handful of firms in Canada capable of delivering non-destructive testing (NDT) investigations, DST is pleased to now offer Clients this specialized testing.

NDT is a stream of engineering consulting used to assess the condition of various types of structures by detecting voids, deformations, or spatial displacements within the grout.

Utilizing the Slab Impulse Response (SIR) test method with the aid of specialized NDT instrumentation, DST conducts 360 evaluations on the culvert or tunnel system to identify poor locations that have developed in the structure’s adhesive material.

As part of the evaluation, test areas are mapped out, the structure is systematically searched for poor locations, and the site of poor locations are precisely captured.  All data collected is then carefully analyzed by DST’s specialists to determine if the poor location is a void or a spatial displacement.

In the case of a culvert rehabilitation project, DST’s engineering team uses a NDT program to:

  • determine compromised areas in the culvert’s cementitious grout,
  • understand the extent of the damage, and
  • provide recommendations for repairing the culvert.

The Client can administer a rehabilitation program and avoid having to replace the culvert.


About DST Consulting Engineers

DST is a nation-wide, employee owned company with over 40 years of experience. Our ‘product’ is our knowledge, our greatest asset is our brain power, and our business is providing a range of comprehensive, results-driven services to meet the special demands of our clients.