I may not have been grateful enough to have lived in an area that was not redzoned after the quakes, that does seem so bizarre. Thanks for the demonstration of liquefaction, quite easy to understand :)
Thanks Brandy. I often explain it by asking people if they've ever watched a big concrete pour where a large vibrator is put in the concrete, making it liquid so it flows in to the moulds better. When I was a student there in the 60s (Physics and Maths, not Engineering) I attended an open day at the lab, and I recall a photo of a driveway to a factory or warehouse with a zigzag. Apparently the building moved so they relaid a section of the driveway to account for this movement. Do you have any knowledge of that? Some of the buildings, including the 10(?) storey tower where we had our physics labs were built on rafts so they'd float if the ground liquified - as I recall...
Isn't it possible for some soils to behave as if "liquefaction" had occurred, but without the presence of water? Their molecular structure collapses? I heard this decades ago. Cheers.
🌱🌏💚 Hopefully this time lessons are learned from the past. 2011 - 2011 isnt the first time large eqs have occurred in the Christchurch/Canterbury region. Japan builds on reclaimed land prone to liquefaction, their modern buildings withstand comparatively similar size & depth eqs. Houses/buildings with solid concrete floor slabs are a dumb idea in any earthquake prone region in NZ.
My childhood community looks exactly like that too, but it wasn't a earthquake it was the Rogernomics neoliberalism, more devastating than a earthquake. But liquefaction, is it the same term used when you leave your car motor running on the beach and it sinks into the wet sand?
![Lp. Сердце Вселенной #60 РОЖДЕНИЕ ЛОЛОЛОШКИ [Финал] • Майнкрафт](http://i.ytimg.com/vi/YoR0pAV9FVQ/mqdefault.jpg)
this kind of presentation deserve more views
Cool demo, Brandy! Liquefaction is an amazing and dangerous phenomenon.
Great little video Brandy. Lived in Christchurch back when the earthquakes hit.
Thanks!
I may not have been grateful enough to have lived in an area that was not redzoned after the quakes, that does seem so bizarre. Thanks for the demonstration of liquefaction, quite easy to understand :)
Thanks Brandy. I often explain it by asking people if they've ever watched a big concrete pour where a large vibrator is put in the concrete, making it liquid so it flows in to the moulds better.
When I was a student there in the 60s (Physics and Maths, not Engineering) I attended an open day at the lab, and I recall a photo of a driveway to a factory or warehouse with a zigzag. Apparently the building moved so they relaid a section of the driveway to account for this movement. Do you have any knowledge of that?
Some of the buildings, including the 10(?) storey tower where we had our physics labs were built on rafts so they'd float if the ground liquified - as I recall...
Great
I am wondering, wasn't there any requirement to check liquefaction risk for engineers approving and building subdivisions?
Either my memory is really bad or the eng buildings got a pretty serious reno in the last few years.
Your memory is doing fine! 🙂
Isn't it possible for some soils to behave as if "liquefaction" had occurred, but without the presence of water? Their molecular structure collapses? I heard this decades ago. Cheers.
Cool to see Dick’s name pop up on some of these images. He was a cousin of mine, and a very interesting person to talk with. RIP.
🌱🌏💚 Hopefully this time lessons are learned from the past. 2011 - 2011 isnt the first time large eqs have occurred in the Christchurch/Canterbury region. Japan builds on reclaimed land prone to liquefaction, their modern buildings withstand comparatively similar size & depth eqs. Houses/buildings with solid concrete floor slabs are a dumb idea in any earthquake prone region in NZ.
My childhood community looks exactly like that too, but it wasn't a earthquake it was the Rogernomics neoliberalism, more devastating than a earthquake.
But liquefaction, is it the same term used when you leave your car motor running on the beach and it sinks into the wet sand?
same exact thing but smaller. it's the vibrations in either instant
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