Overlooking the incredible vista of the Murchison River Gorge, twin skywalks built 100 meters apart have become a must-see tourist attraction for visitors to the Mid-West region of Western Australia.
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GMA’s quality performance in monumental skywalk

Overlooking the incredible vista of the Murchison River Gorge, twin skywalks built 100 metres apart have become a must-see tourist attraction for visitors to the Mid-West region of Western Australia.  

Perched more than 100 metres above the Murchison River, the larger of the two skywalks extends an impressive 25 metres over the edge of the gorge. And while the drop may not be as dramatic as what you can experience from the Grand Canyon skywalk, the incredible structure lends to making one feel like they are “walking out over nothing.”  

The engineering behind  the Kalbarri Skywalk is as impressive as the attraction itself. So, when Geraldton based company, and GMA customer, Reno Blast was contracted to be a part of the construction phase of the red ochre-toned structures, it meant three types of high-performance abrasives would be used throughout the project. 

GMA NewSteel™, GMA SpeedBlast™ and GMA PremiumBlast™ were used at different stages across this construction, with Reno Blast providing all the blasting for the structural steel and accompanying steel packages for both skywalks, as well as the tourist facilities built alongside the skywalks. 

Using GMA’s abrasive Garnets™, Reno Blast also completed the decorative blast stencil work in the concrete which is prominent all the way up the concrete entrance and path. 









 
The stencil work is full of thousands of individual dots that represent a Dreamtime Snake zigzagging along the path – homage to the Inyaka Wookai Watju site in the Yamaji region of Western Australia, and where the skywalk was constructed.  

Thirty tonnes of GMA Garnet™ were used in the project, with Reno Blast deeming all three abrasives highly effective across all the surface preparation work. 

“No other product would have been able to provide the quality and flexibility that we needed to complete this project,” a spokesperson for Reno Blast said. 

An interesting fact? Reno Blast revealed that all the steel used on the structures has a rustic look - the result of a special steel named CORTEN, designed to give that appearance.  

According to Reno Blast, the steel first must be blasted to a Sa 3.0 Abrasive Blast with a 50–75-micron anchor profile. It is then blanched evenly with water to start the rusting process, ensuring the steel looks uniform across all the structures.  

Corten exhibits superior corrosion resistance over regular carbon steel as a result of the development of a protective oxide film on the surface which slows down future corrosion and provides the decorative ‘rusted’ look.

Garnet used in this project was mined from the Port Gregory site, just under an hour drive from the skywalk, keeping the connection of this monument, right down to the last detail, as local as possible.  
 


  
 
 
   
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