[U/C] Festival Plaza Redevelopment | $800 million

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[U/C] Re: Festival Plaza Redevelopment | $800 million

#736 Post by claybro » Tue Jan 15, 2019 3:02 pm

[Shuz] wrote:
Tue Jan 15, 2019 7:12 am
The water table would be virtually nonexistent seeing as the Torrens Lake is a man made lake not a natural one. Absolutely zero concern of any flooding events.
The water table in this vicinity is actually above the bottom of the lake. It is why the lake manages to maintain a constant level, even with months of hot dry weather during Adelaide summers. Several years ago the lake was accidentally drained by a weir maintenance worker (or sabotage) and overnight the lake completely drained. Much angst about our premier water feature being a mud bowl and no rain in sight, however within a week, water had risen from the water table almost half filling the lake. Having said that you would assume the engineers have accounted for any water seepage in the design. There was a situation at Henley, where the basement level of a new apartment construction required constant pumping of water from the lower lever as obviously this was overlooked, but hopefully not in this case. As AG has pointed out, the basement level may well be above the surface of the lake anyway.

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[U/C] Re: Festival Plaza Redevelopment | $800 million

#737 Post by CDJ » Wed Jan 16, 2019 4:06 pm

Obviously the basement engineers have considered ground water.
The water table is at around B4 level, so one storey up from the base.
The perimeter wall is relatively watertight and keyed into sandstone.
Underslab drainage at B5 relieves pressure from any water which does manage to seep under the wall.
All of this is business as usual for basements around Australia and around the world.

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[U/C] [U/C] Re: Festival Plaza Redevelopment | $800 million

#738 Post by ChillyPhilly » Wed Jan 30, 2019 6:48 pm

Now this is one mean machine.

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[U/C] Re: Festival Plaza Redevelopment | $800 million

#739 Post by Uncle Monty » Thu Feb 14, 2019 12:37 pm

Plenty of action on site. Three piling machines in operation 14/2/19 (only two visible in this pic).
Festival Plaza

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