The National Capital Authority has made it known that their long delayed plan to fix corroded bolts on Scrivener Dam (what keeps Lake Burley Griffin where it’s supposed to be) are finally coming together:
The National Capital Authority (NCA) will begin installing replacement anchor bolts at Scrivener Dam at the beginning of March.
The replacement anchor bolts will ensure that the dam’s five flap gates will remain secured to the concrete dam wall. The flap gates are typically lowered during flood events to regulate the water level of Lake Burley Griffin.
NCA chief executive, Gary Rake said the works were identified during an annual safety audit and surveillance inspection of the dam in late 2011.
‘The NCA became aware of corrosion issues related to the original anchor bolts in late 2011.
During 2012 we conducted further engineering investigations, developed and documented a design, obtained the necessary statutory approvals and appointed a head contractor to undertake the works,’ Mr Rake said.
‘Replacing the 120 existing anchor bolts with 60 new bolts has required careful consideration to ensure the work is completed efficiently and with minimal impact on dam operations.
‘The anchor system has been substantially redesigned to meet current design standards.’
By 2014 they expect to get the Lake back to its proper height.
[Photo by Jawn]