Concrete Structure Investigations COVID-19 advice for clients


Hello valued clients and contacts,

Concrete Structure Investigation’s response to the Covid-19 Level 3 alert, with the upgrade to Level 4 Wednesday midnight:

CSI can continue to work remotely on your queries for pricing and completing reports where data has already been collected., as our team can work remotely on these and share electronically for peer review.

CSI can go to site where the work is for Essential Services, but we will not be able to attend non-essential site work until the current Level is downgraded.

As with the rest of the country, we are very sorry not to be able to progress your business requirements beyond the points above. We wish you all to be safe and let’s hope we can beat the spread of the virus and be back to work as soon as possible.

If you are contacting us about some pricing here are some really good tips so that we can get it right for you:

To assist CSI’s representatives with ensuring that we can provide you with the most cost effective, accurate and timely pricing and service we request you please share with us any information that you may have about the structure or building you are enquiring about. Sending us all drawings, photos and any other relevant information will ultimately benefit your project and allow us to be more informed. Please see below for a list of required information.

If you have any of the below information please share it with us

  • As built plans (Structural and architectural)
  • Scoping Documents
  • Photos
  • Hazzard registers and health and safety plans
  • Asbestos registers

If you have information and are unsure that it is useful please do send it to us regardless, to be able to provide our best service we require to be informed.

Please contact Kurtis 0800 33 77 67 if you have any questions.

Best regards, The Team at CSI

Structural Health Monitoring

1. What is Structural Health Monitoring?

Structures deform as they experience load, resulting in stress developing within the body of the structure. These deformations, and consequently stresses, can be monitored to ensure that they do not exceed specified limits adopted during design, i.e. serviceability limit state and ultimate limit state. CSI offers different Structural Health Monitoring methods to suit the client needs, such as:

  • Crack monitoring
    • Especially for RC structures
    • Can be measured manually using a crack ruler or digitally using displacement gauge
  • Stress measurement
    • By virtue of strain gauge
    • Stress can then be calculated using known properties of the monitored member or
      in conjunction with the result from material test
  • Vibration monitoring
    • Vibration due to service load such as wind, traffic, normal occupancy of the
      structure, as well as probabilistic load such as
      earthquake can be monitored by virtue of an accelerometer
    • Force and deformation can then be estimated from the vibration data

2. When would you use Structural Health Monitoring?

CSI offers flexible timeframes for Structural Health Monitoring; it can be done as a one-off during
test day, continuously for a specific duration (days, weeks, months), or periodically/seasonally for
example to gauge the different environmental effect during summer/winter to the expansion and
contraction of steel railway structure.

3. What are the Benefits of Structural Health Monitoring?

Clients/engineers are most likely concerned if there are cracks in RC floor, beam, column, or wall especially if the structure is relatively new and has only experienced the service load it is designed for. They will want to ensure that these cracks do not widen beyond the limit imposed during design. Other times, an engineer might be interested in the existing stress within old pre-stress elements, such as within a hollow core or flat slab units, to ensure they are sufficient in capacity to support additional loading.

Vibration monitoring is useful for researchers as well as for practicing engineers.

Sound relevant to you?

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