gu

Hey did you try to post that video on our video site, that would be nice if you did.

http://video.concretepumping.com/

tried to post on video site wrong format. what format does it need to be?

Hi vasa, didnt have enough pipe, could have reduced down to 4inch but didnt fancy that much.

alot of pipe wow  did you use grout to prime all of it or some other metheod how many bars was the pump pushing to go that distance

one thing i noticed was u didnt put a 5inch rubber whip hose on end on boom b4 u hooked up metal pipes

wouldnt that put alot of stress on boom?

pm36m primed with cement grout, pump was pushing at 2000psi

hi pumpon

i would never use a rubber hose before steel pipe on a line over 150m, as this could cause a problem if your pressure is to high the rubber will swell and can cause a plug

It should support about all of them all the mpegs what for matt do you have it in.

I have to say that pumper22 is a great guy and we had a long talk about sermac because i had to delete one of his post because he was talking about the sermac. I have to say that after we talked i like him allot, what a great guy and sermac is lucky to have him using their pump.

Kick butt pumper22. keep up the good work.

pumper22

It is not a good idea to hook your tip elbows to system without a placement hose off of the tip. If it is steel to steel you do not know if you are lined up with the system or not. I think that if you check all of the safety material from your mfg' you will see that that is the case. I know that the CPMA has that safety warning. Your boom should be free of any hard connection. 

nice video pumper22,

i got puffed walking up and down that pipeline with you. what strength, and what slump concrete were you pushing. did they want the pour to go slowly or was that your call. what gear was the merc in. how much did you pump. was that Vasa in the tall ship in the distance. how did you clean up. if you used air, how far across the harbour did the ball land. no seriously, this is a site where we could and should learn by other pumpers conquests and defeats, i NEED to hear your story, where did you find all that line, was the module plumbed for high or low pressure, did you lose sleep the night before.........

450m x 125mm line= 5.5 cubic metres

you were stroking about 6 per min= a little under 30 cubic metres per hour if the crete was wet

good job, well done

speedy,

i gotta be thinking that 450 metres of 5 inch gear would be hard to find by all but the biggest of companys. i did notice a bit of new gear in that set up. i have an idea that our english friend put his hand in his pocket (or his bosses) to get the job done and safely, hence the single ended 5in drop hose.

on another note, it would be interesting to know what the manufacturing engineers would say about the boom setup, locking it down as 22 has done, taking the recoil of the static line out of the boom structure. i probally would of placed a few truck tyres under the first couple of pipes of the static line and let the boom float about a bit, but would the recoil do unnecessary pin and bush damage. is it better to let the recoil be absorbed in the boom segments as these new age booms are very much designed to bend, twist and float around like they do.

what are your thoughts.

cheers from down under where the weather is nice,

The best one I ever saw was the same sort of deal. When it was over the guy un-snapped the clamp and the boom flew over and broke his leg into shreds.

Lots of stored energy in a boom. He had (or someone else had) hit the boom left switch sometime after the system was hooked up.

Yea, I know, that could never happen to any of you; just forget I even said anything. ;~)

Hi 2IC

thanks for your comments, the merc was in 11th gear and pulmbed up as standard output turned down we wanted to pour the whole 50m3 without stopping pumping at all, we just turned the output and revs down as we changed over the mixer trucks. we hired some system and bought what we could the hired pipes were quite rusty which was  a bit of a concern job went like clockwork. Cleaned out with air linesman had two radio so the air was well controled at all times. then we flushed the system again with a ball and fire hose. as for the boom hardley any recoil as we pumped slow and steady job all done in a couple of hours.

I can not buy into your argument that “The hose would swell” and thus cause a plug.

First off your entire boom is coupled with those Sorry ‘metric’ couplings. The working pressure on the coupling system is only 85 bar (line pressure). Next, by pumping through your boom and all of the associated close radius elbows, the concrete has changed configuration so many times that the non existent ‘swell’ is of little consequence.

No one goes into a pour with the idea of side loading their boom; or should not anyway. The fact is that it happens much too often. Instead of listing reasons why it doesn’t need to be done according to industry standards; just call Con Forms and buy a hose… or two.

And if you think they are expensive please consult your manufacturer as to the price of a tip section.

The SAFE WAY to attach line to the end of your boom is through a hose. You know; the double ended hose you have been using for a tip hose, yea that one. Unless you have been tying it into knots it should be up to the task.

***Never attach your boom – steel to steel to additional line. It needs to be able to flex, and you need to be able to monitor its loading by examining the “bow” in the hose. Your boom is a fragile thing that must be able to move as needed.