They pumped it with GIANT trailer pumps. On some portions there were smaller pumps used on the upper teirs (double pumped). It's on the Putzmiester web site. New world record for a verticle push!

  At some point, the concrete supply was shut down on that project because they ran out of SAND!?!?  Yeah,.. In DUBAI... No sand!?!?!? Is'nt there an old saying..."In the abundace of water, The fool is thirsty"?

Scott-

I don't think you can see the curvature of the earth at 2600 ft.

...ran out of sand.  Love it.

I'd love to watch their blow down with a double pump set up.  Interesting.

hehe funny stuff , i also dunno about the rotation thing but i do know that if i was up there it wouldnt be about wathcing the eath go round it would be about keeping my cheeks tight enough so i dont shyt myself Oo LOL 

WOW!!!  Beautiful pics!!! :)

Raymond,

I just posted what someone else wrote, I didn't think you could see the curvature of the earth, one hell of a horizon though.

Now if we can just keep all the radical Americans from flying into it with a 747

 the putz guy in Aus said it took 42 minutes for slurry to get to top of building

With 2,620 Ft. of 5" line it would be approx. 13.25 cubic yards of concrete.

You need to have some ground line. I have never had a pump right next to the standpipe.

Any way you think about it; it is a lot of extra crete every day. Having to hold the last 15 - 16 trucks to blow back into is a trip. Or switch a diverter to pour something else on the ground. Not many folks have been given that kind of a problem. To make constructive use of the dead mud every time you pour would take some careful planning.

I think your math is off a bit fella's

Two trucks would be enough! 13.25 cu.yards left in pipe.

Yes you are right oly by the chart it is .52 yards per 100 feet. 

I am just as gullible as the next guy ;~)

Why does it take 45 mins or whatever the time was for the crete to get to the top of the building?

From July 2007

The concrete is pumped in batches, which – with a pumping pressure of up to 190 bar for each stroke – obviously causes the whole system to shake. During switchover, the shaking is particularly bad, because the pulses from the concrete pillars within the delivery line are aggravated by a second trouble spot: the hydrostatic pressure from the concrete in the delivery line. To estimate its effect on the system, it is essential to know that the pump’s pistons and cylinders displace in the “pump” and “fill”

steps. Whenever the just-filled cylinder is connected to the riser by the S-tube switchover (see diagram), the over 500- metre-high concrete pillar slides on the (already rather lofty) charge for the next

“shot”. This happens at the height achieved with around 120 bar. In addition, the concrete is powerfully precompressed, causing it to be catapulted out at the next S-tube switchover. The stress placed on the material by the interplay between compression and backflush is immense. For this reason, the three delivery lines are only securely

fastened at the bottom of the tower. Further up they are held loosely, so that – with each pump stroke – they can relax by around two centimetres with the blackflow of the concrete.

The view

The Guys Next Door, cranes, cranes and more cranes;

1st choice

Thanks for the info. it is quite amazing. I was told that there was a program about this project, i think i'll try to find it somehow.