Underwater pumping, just looking through some old pictures...
Pump N00b 05-29-2009
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Found some old pictures from some years back

Photobucket

Pillars for an oiltanker quay, hundreds of them, around 1.5 metres in diameter, upto 75 metres below sea level, driven deep into solid rock (can't remeber depth, but around 10 metres maybe?)

The concrete was pumped through 5.5" hose and line suspended by a crane
with the end submerged between 2 - 5 metres down in the concrete so it would'nt segregate.
On some of the anchoring points we needed over 100 (300') metres of line just to reach them, so over 400 (1200') metres total sometimes.
Even did a big underwater wall on this project with over 1000 m³.

Miss the good ol' Cifa, used to max it out all day with the pressure sometimes hitting 400 bars :D, it would rather stall the engine than pressure out.
Used to blow the banjo on the main pump sometimes...
Good times, glad i'm back in business next week.

So this is how we do it in Norway.
What you think of the setup? Looking safe or what?

Todd 05-30-2009
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What a great piture, wow.

Leroy 05-31-2009
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Good thing they did'nt need a nozzle man under that ice water! Ida passed on that one, looks too damn cold for this fish!

Great pic though!


ShortStik 06-01-2009
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thats the ways its done in my mind.  Right arm N006

that sounds like a cool project to have been a part of.  the scenery alone would be enough to keep me content on site.

want were your mixes like for the underwater and mass line work?  the 1000m wall, was that a continuous pour?


Pump N00b 06-01-2009
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The concrete used was regular concrete with AWA additives, sometimes we used AWA to start with then switched to normal so the AWA would be on top as a barrier.
The wall was done in 2-3 stages.
And yeah, we used a diver too, poor bastard.
He would have a hole on the bottom of the pillar to see if the concrete was flowing ok, the weld it up.

TooTall 06-01-2009
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 Aw come on leroy it's probably just as cold as Alaska was but in water that you can actually see through! You might as well put on a blind fold in bristol bays chocolate milk water. Is there a certification required for IFR diving?

 You spoiled howlie boy! Sounds like you got too comfy in the big blue bath water of the south pacific? You better put some shoes on and come home for a while before you get too soft!

 Scuba Diving ...Must be sweet getting paid to do something that thousands of tourists actually pay to do on their vacation? 

   Hawaiiansearch'n for a lost salt shaker?