Hi-Rise Pump Operator
Bob 07-22-2007
comment profile send pm notify

OK- so just about the time that you think that you are 'special' and doing what no man has done before, reality slaps you in the face- POW!

Some guy, probably from India, is going to TRAMPLE the world record for how high you can pump concrete. He is probably being paid less per day than you make in an hour. Is that fair?

oh, now i remember

The FAIR is in August.

DUBAI, United Arab Emirates — Developers of a 1,680-foot skyscraper still under construction in oil-rich Dubai claimed Saturday that it has become the world's tallest building, surpassing Taiwan's Taipei 101 which has dominated the global skyline at 1,667 feet since 2004.

The Burj Dubai is expected to be finished by the end of 2008 and its planned final height has been kept secret. The state-owned development company Emaar Properties, one of the main builders in rapidly developing Dubai, said only that the tower would stop somewhere above 2,275 feet.

When completed, the skyscraper will feature more than 160 floors, 56 elevators, luxury apartments, boutiques, swimming pools, spas, exclusive corporate suites, Italian fashion designer Giorgio Armani's first hotel, and a 124th floor observation platform.

 


OldSchool2 07-22-2007
reply profile send pm notify

they are using a new upgraded 14000 with 700hp.the world's biggest pipe splitter.


waterbox07 07-22-2007
reply profile send pm notify

I wonder how many over paid saftey men there are?  Or any saftey at all?

Bob 07-22-2007
reply profile send pm notify

0


Slavedattler 07-22-2007
reply profile send pm notify

Seems to me I read something like this in a very old book.

They have to get alot higher acording to that book.

The logistics would get tough with no understanding of each other though.


2IC 07-23-2007
reply profile send pm notify

1680 feet of 5 inch pipe = approx. 8.5 cubic yards = approx. 6.6 cubic metres = approx.15.84 tonnes (give or take depending of the strength and density of the concrete)!!!

only a quick calculation, i may and probally am wrong but that is a long way up to be pushing the grey shit.

dont really think they would use a 5in line, would have to be a 6 or 7, does anyone know?

hate to be there on a bad day, when some dumb arse driver says "it's the pump".


Bob 07-23-2007
reply profile send pm notify

2,275 feet UP

+ whatever system they have on the deck and from the pump to the vertical.

I'm with you, I don't want to be there on a bad day. ;~)


Bob 07-23-2007
reply profile send pm notify

ps

It seems to me that when going that high you would reduce the diamater of the pipe to lessen the weight of the column you needed to push UP every stroke.

4" or perhaps 3"

;~)


2IC 07-23-2007
reply profile send pm notify

i am thinking bigger pipe less friction and headaches

Bob 07-23-2007
reply profile send pm notify

The weight is directly proportional to the volume, and it is the pressure (as supplied by the pump) required to lift that volume that makes me suggest that a reduction in pipe diamater is a step in the right direction. I know the static pressure in a column is not determined by its diameter or any other configuration other than height.


Bob 07-23-2007
reply profile send pm notify

Since I have never come close to pumping this high and don't have a clue as to the issues; perhaps someone KNOWS what the real issues are when dealing with pumping this high. Like Putzmeister or Schwing or one of the pipe mfgs. This is a very interesting topic. ;~)

Redman1 07-23-2007
reply profile send pm notify

I would be willing to bet they have multiple pumps at various stages of the pour. For example when they get to a certain height, they pump into another pump to push it higher. What heights...I have no idea, plus they would need to get a heavy pump up somewhere on the structure somehow (sky crane at 2 to 300 feet maybe?) I have read about the self climbing masts with detach booms on them, but who knows of a machine that can pump anywhere near 2,500 feet vertically. Bob your right this is interesting, I am going to google that baby.

dazzle 07-23-2007
reply profile send pm notify

using 6 inch line so jospeh from putzy told me reducing back to 5 at the top .  i have pumped 80 story aprox 1000ft with a 14000 with 600 hp cat motor thirsty sucker 2litres per metre was capable of 50 meters a hour at top 320 bar pressure on gauge 6meters of waste concrete at end of pour would like to see what they beefed up on pump cause we where bending s tube shafts at the end

Bob 07-24-2007
reply profile send pm notify

A maz ing !!!

I have seen the 14000 in action and it did not seem to care about what floor we were pumping; it just guzzles fuel and strokes away. I always suspected that there was a limit as to how high it would pump. I never really considered that all it needed was another 100hp. What a kick-ass machine. 6" pipe has to be close to 30# per foot, so we are talking about starting and stoping over 65,000 pounds of concrete every stroke @2,275ft. You would not need a safety vest, you would need a flack jacket on that job. ;~)


Bob 07-24-2007
reply profile send pm notify

Dazzle,

What kind of pipes and clamps are being used?


2IC 07-24-2007
reply profile send pm notify

is the pressure at the base of a vertical pipeline the same regardless of pipeline diameter?

i am not bias but because of the design of the rock valve, equal pressure against the hopper and up the line, no twisting effect like an s-tube, i would think this type of work would suit it to a tee.

 


Bob 07-24-2007
reply profile send pm notify

Static Fluid Pressure

The pressure exerted by a static fluid depends only upon the depth of the fluid, the density of the fluid, and the acceleration of gravity.

The pressure in a static fluid arises from the weight of the fluid and is given by the expression

Pstatic fluid = ρgh where ρ = m/V = fluid density
g = acceleration of gravity
h = depth of fluid

The pressure from the weight of a column of liquid of area A and height h is


The most remarkable thing about this expression is what it does not include. The fluid pressure at a given depth does not depend upon the total mass or total volume of the liquid. The above pressure expression is easy to see for the straight, unobstructed column, but not obvious for the cases of different geometry which are shown.

Index

fluid pressure calculation

Pressure concepts
 
HyperPhysics***** Mechanics ***** Fluids R Nave
Go Back





Fluid Pressure Calculation


Discussion

Fluid column height in the relationship

is often used for the measurement of pressure. After entering the relevant data, any one of the highlighted quantities below can be calculated by clicking on it.

Pressure difference = density x g x height

If the fluid density is
ρ = gm/cm3 = kg/m3
and the column height is
h = m = x 10^ m
h = ft
then the pressure difference is
ΔP = kPa
ΔP = lb/in2
ΔP = mmHg= inches Hg
ΔP = atmos
ΔP = inches water= cm water

Note that this static fluid pressure is dependent on density and depth only; it is independent of total mass, weight, volume, etc. of the fluid.

Index

fluid pressure discussion

Pressure concepts
 
HyperPhysics***** Mechanics ***** Fluids R Nave
Go Back



dazzle 07-24-2007
reply profile send pm notify

bob not sure about dubai but over here we used conforms induction harden pipes 9mm on ground line 7mm on vertical with putz high pressure ends with screw up clamps  think the clamps were rated at 250 bar was the only thing that the company was septical about   but they did the job

Bob 07-24-2007
reply profile send pm notify

Dazzle,

Every hi-rize I ever pumped or read about was done with ConForm pipes and clamps. I would have thought someone made some trick stuff for this job....... but I also thought that they would use small pipe...... what do I know? ;~))


Jr. 07-28-2007
reply profile send pm notify

one question i would like to ask is this- how could the concrete itself withstand that much pressure and still be pumpable when you put that much of a strain on it? Granted the pump itself will provide the pressure needed to get it up that high, but if the mix won't do it on one straight shot then i think they must have put a relay pump at about level 75 or so. by the way, the new putzmeister is a bad ass pump, but it bill just blow pipes apart if any form of blockage comes along. THE PUTZMEISTER 14000 JUST KEEPS PUSHING