Swiss Centre construction

[abigailbrady]

Swiss Centre construction site 2009-01-07 Haven't posted a Swiss Centre picture for a while. It finished demolition some months ago, and has now entered the construction phase. There are two large blue cranes on site (you can see the bases of them in frame). Today's new arrival is the upright grey thing in between them. We're not quite sure what it is. They got it a certain amount of assembled and then seem to have taken it apart again, so presumably they are Doing It Wrong. The truck at the bottom has the remainder of it. We suspect it may be a concrete pourer - any ideas?

(apologies for the very poor shot, on cameraphone and it is VERY COLD on the roof)

Because the building is now not there any more, and it's winter and some of the trees are out of the way, we've noticed we can see the Natwest Tower and the Gherkin from the top floor. I managed to see quite a few more city towers from the roof but didn't stop to identify them.

Comments

[hairyears.livejournal.com]

No, the folded-up thing on the street directly in front of the big grey pillar is a concrete pump. I see no pipes on the pillar itself, and the central bore is way too big for any kind of concrete pump.

See my reply below - I think it's a pillar crane under construction. Nevertheless, you're not completely wrong: it may well be used to lift concrete pumps and piping for the larger pours - but not the actual concrete. That'll either be pumped directly, or lifted in 'pigs' for smaller pours by the main tower cranes.

[abigailb.livejournal.com]

There is a pipe apparently somewhat larger than a drainpipe between the main bore and the climbing hoops.

[nmg.livejournal.com]

Yes, I was assuming that would couple onto the pipes on the folded up thing in the street.

[nmg.livejournal.com]

In fact, the four lugs on top of the pillar looks like they will mate onto the matching four lugs visible towards the right of the folded up thing.

[abigailb.livejournal.com]

The rightmost smaller thing on the pavement is something that they had put on the top of the unit. It looked at this point like they were going to move the larger thing on to this unit - they'd hooked it up to the big crane and everything, but all they appear to have actually done is move it from the back of a vehicle. Since then the rightmost unit was removed and put back on the movement.

[hairyears.livejournal.com]

Then it's the central pillar for a specialised crane carrying a concrete pump and an extensible hydraulic arm (instead of the usual jib) supporting the pipeline. That's an expensive piece of kit and they must be planning to pour a lot of concrete, over a period of time that makes it economical to rent it in and set it up instead of hiring mobile pump trucks on the days they pour.

I wonder how far down this building will go.

Also: those things are noisy. Expect a hell of a racket and lots of vehicle movements for the concrete itself.

[abigailb.livejournal.com]

The odd thing is that it appears to be either brand new, or very well cleaned.

They now appear to have removed the pillar, then added another section to the bottom, and are now doing god knows what with it.

[abigailb.livejournal.com]

And, it would be impressive to be noiser than the general demolition!