• The Kingdom Tower will measure 3,280ft (1km) tall if it is built in Jeddah, Saudi Arabia to provide views of the Red Sea
• Foundations will be 200metres deep and able to withstand salt of Red Sea
  
• Engineers are currently testing materials, such as concrete and steel, out of which the massive skyscraper could be constructed
• Once of the biggest challenges is the pouring of concrete thousands of feet off the ground - and a thin pressurised tube could be the answer

Read more: http://www.dailymail.co.uk/sciencetech/article-2567458/We-need-pump-concrete-half-MILE-sky-Engineers-puzzled-build-worlds-tallest-building.html#ixzz2uWfVO4yf 
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Calcs say using 6" system it will require 500hp and close to 5,000 psi to pump 30 yards per hour at 3000'.

Use 4" inch  or two pumps.

I once did 600' with 3 Mayco C30's piggy backed, so let me do that math, i would need 17 Mayco C30's or just one of my sponsors pumps.

4" system = 600HP and almost 6,000 pis

Todd,

Just give them Conco's Number.

Schwing would do the job i'm sure

Crane up Materials dry, mix it , pump it!

I've been wondering about that with 2 pumps. But 1st of all it would be quite a problem with cleanout etc on the 100th floor.

It will probably also have some effect on the concrete pumping it twice. Air and so on...

mister perkins you made a funny ha ha you mean a putz can do the job !