Yasi vs. ELCOROCK® Geotextile Containers
Severe tropical cyclone Yasi made landfall on the Queensland coast on February 3rd 2011. The category 5 cyclones’ core began crossing the Queensland coast between Cardwell and Innisfail. Wind gusts estimated to have reached 290km/h helped create a storm surge estimated to have been 7m, seriously destroying property and infrastructure along the coastline.
Four significant ELCOROCK® structures took the full force of cyclone Yasi and provided the product with a real test of its capabilities.
Inspection of the ELCOROCK® structures 2 weeks after the cyclone event showed little or no damage to the actual containers. The integrity of the groynes and walls remained intact and the structures have continued to act as an erosion control barrier as they were originally designed.
Five ELCOROCK® groynes were constructed in 2005 utilising 0.75m³ sand containers. Cyclone Yasi caused serious damage to the Lucinda community infrastructure including the sugar refinery concrete pier. The five ELCOROCK® groynes remained in place and unaffected by the storm and debris.
The ELCOROCK® structure was built in 2010 using 2.5m³ ELCOROCK® sand containers (but did not use the more durable vandal deterrent material). Whilst the structure remained in place with little lateral movement, there was evidence of punctures due to debris being dragged across the containers.
The ELCOROCK® revetment wall was built using 0.75m³ sand containers to protect a large playground along The Strand. The ELCOROCK® structure was largely unaffected and retained sand behind the wall, preventing the footings of the playground to be undermined.
The ELCOROCK® revetment structure uses 2.5m³ vandal deterrent sand containers to protect a private residence. The structure remains in excellent condition with no dislodgement or damage to the wall, unlike the rock wall on the neighbouring properties which were dislodged and damaged.