A new tilt on traditional monitoring techniques.

By |2018-11-06T01:12:47+00:00November 6th, 2018|Surveying|

Wireless monitoring technology used on construction of new entrance to The Star Casino, Gold Coast

Earlier this year the Gold Coast’s most luxurious new hotel, the Darling at The Star Gold Coast officially opened. The 17 story boutique hotel has taken over three years to construct and forms the centrepiece of the casino’s major transformation. As part of the development stage an additional entrance (including bridge) was constructed to improve guest flow to the casino precinct and allow vehicle access from the Gold Coast Highway and Elizabeth Street in Broadbeach.

A condition of approval required that – works being carried out adjacent to the GC Light Rail need to have monitoring conducted to ensure that all assets are protected.

Given the close proximity to the Gold Coast Light Rail, it was a requirement that monitoring be undertaken during the excavation stage. To fulfil this, Bennett + Bennett were contracted by ProBuild to monitor the track slab for a period of 4 weeks. Initially the project scope required a surveyor to be on-site 3 times a day, 7 days a week at 9am, 12pm and 3pm to conduct traditional monitoring. Bennett + Bennett instead pitched the use of wireless monitoring technology to the client. This enabled live movements to be remotely detected 24 hours a day giving enhanced accuracy and better project control.

To determine the benchmark for the threshold notifications to be set at, traditional monitoring was conducted for 3 days prior in addition to the wireless monitors being installed. This ensured that a solid baseline of readings were captured to which future readings would be compared to.

Wireless sensors fixed near track edge – monitor movement 24hrs a day, 7 days a week.

Position of sensors near Gold Coast Light Rail track.

How does wireless tilt monitoring work?

Multiple wireless sensors are attached to the surface and any rotation of that surface is measured and sent via Wi-Fi to a solar powered receiver unit positioned nearby. This unit then sends the readings through a wireless data connection to a web portal where the data is able to be viewed in real time.

  • Highly sensitive readings – capable of detecting rotational movements down to 0.0001 of a millimetre (traditional instruments measure to nearest millimetre).
  • Live monitoring 24 hours a day, 7 days a week means that movement at any time can be detected, not just at the time of the traditional site visit.
  • Movement thresholds can be easily set via the web portal and multiple notification levels are able to be set so that different team members can be notified depending on the level of movement detected.
  • SMS or email alerts sent to project teams if thresholds reached.
  • Long-life and robust systems. The batteries last for 15 years without needing to be re-charged.
  • Easy to setup and establish on site.
  • The system provides the confidence that any movement is detected as soon as it occurs which in turn creates a safer environment for workers as well as the public.

In addition, there are also crack, displacement and optical displacement sensors available. These can be combined and tailored to each unique set of variables. The range is suitable for use on:

  • Rail track bed twist and cant
  • Embankment slippage/soil saturation
  • Bridge, building and retaining wall movement
  • Crack monitoring

For more information on wireless monitoring call (07) 5631 800 or send an online enquiry.