Hi Guys,

We are getting ready for building 550 ft tower building. We are planning to use a placing boom and a high pressure stationary pump to build it.

We have no experience with that kind of equipment so far and I am responsible for calculating costs of using this equipment before we buy it.

I was wodering if any of you have experience on projects like this one - I would like to know:

* How many people you need to succesfully operate placing boom and stationaery pump on a job site? - do you need a special person for cutting and welding of the pipes for full time? what about climbing of the column - how many people and how often should we need to do it hassle free? I am trying to make some calculations - how many full time people should we calculate for that ? (not including truckmixers drivers etc)

* what kind of pipes have you been using on this kind of projects - single or twin wall? I know this have to be special high pressure pipes - what is your experience for wearing off of this pipes (single or double?)

* how long does it take to climb a column one floor higher after the job on certain floor is done?

* Any other ideas of things that could influence the cost of such a project would be highly appreciated.

Best Regards

Lukasz Zyla

in aus we have 3 people one on the pump one on the remote boom up top and one on the hose and yes u will need a welder and a opp with a load of experiance once you start geting up there.  we use high pressure single wall pipe from china at 45 floors it was still measuring 4mm and started at 6mm.

I would contact one of the manufacturers they have placing boom and high rise specialists to help you with these questions , plus they can get you setup with everything you need to do the job safely and professionally

I can speak to the placing line system as that's what we do for a living. 

You certainly want to use a single wall system for your high rise project as a double wall variety doesn't lend itself well to this particular application.  Since no mention of total yardage/meterage, yards/meters per hour expected to be pumped, at what pressures, & type of concrete makes it difficult to pin down exactly what will work for this particular application. 

You want to be sure that whatever pipeline you go with, you'll have enough wall thickness towards the end of your project to handle the pressures you will experience pumping at that time.  In other words, you shouldn't cut the wear factor so close that you're blowing pipes before the job is topped out.  There's also single wall induction hardened pipeline which can prevent you from having to replace your riser due to wear before the job is done.  Heat treated system can get you anywhere from 2 to 2-1/2 times the life of a non-hardened 'cheap grade' of tubing & if you calculate your labor costs to change out that system, it's money well spent.

I also agree, you should have an operator that has experience with this type of work because things like set-up, clean-out, etc. can be extremely dangerous & the jobsite isn't where you want to learn by trial & error.

Good luck

Hello guys and thank you for all your help until now.

I have been thinking for a solution on this particular case:

We are going to start the placing boom from 5th floor on and it is going to rise another 50 floors. We are also planning to use 29m placing boom (around 95 feet). The project is expected to consume 30 000 cbm of concrete.

I am also planning to use ALLIANCE 2110HPD stationary pump with max pressure of 154 bars. The pressure calculation for this building that I did has given the outcome of 102 bars of total pressure needed.

I was thinking about using a twin wall pipe for horizontal line and then single heat treatened HP pipe for the vertical line. I am also quite sure we will need a shut off valve for cleaning the pipeline. But now we come to the details:

* how many mounting brackets should we use (one every 8 ft?)

* do you think it is reasonable to only have one operator on the placing boom platform with a wireless remote for stationary pump operation?

* how long does a one floor climbing take and how many people should you need for that (we are NOT going to use elevator's shaft)

Any other comments or ideas would be greatly appreciated.

Thanks, Regards

Lukasz

Izvla:

  You will want a min of 2 guys.  A good diversion valve with a blow-out stand in a dead man.  Every 3 pipe should have a pipe bracket on it.  I just got done doing a 52 story building.  We were using a bsf14000hd for the pump.  After about 20 floors we were pushing over 300bar.  But we were pumping 16,000 and 18,000 psi concrete nasty stuff.  I agree with earlier posts use single wall pipe for everything.  Check out con-forms I suggest using quarter wall it last the longest and will stand the pressure.  remember the highest pressure will be at the rear of the pump.  the longer you can make your sweeps 90s the better no short turns.  Make sure you use plenty of deadmen in the horz line and darn sure you have a big one at the bottom of your horizontal line.  If you want to discuss this further contact me at brutus2515@yahoo.com.  I'm glad to help.  Plus when you jack the tower a min of 5 guys makes it go real easy.

where abouts is this job we have a couple of placing boom jobs on the go at present

Call us if you need any help deciding which pump towers and booms to use.  We can also help lay the job out for you, set everything up, and help you get started for the first few pours, so to avoid any expensive and dangerous mistakes.  

Just ask for Josh (410) 751- 9500

josh@aaronsconcretepumping.net

Thank you and good luck. 

Josh Sheets - Owner-Aarons Concrete Pumping Inc.