30 Storey hotel in 15 days 1

[Robbiee]

Here is another one from China.

http://www.youtube.com/watch?v=Hdpf-MQM9vY

 

[Teguci]

Oh to have a bustling economy where schedule is more important than cost! Remember those days?

As you watch the video you can see the tower crane structure shift from side to side.

Anybody know what kind of foundations they installed?

 

[concretemasonry]

24/7 construction is very common in China and the love to plan ahead.

Very often, the workers live on site in two story motel-type structures and work long shifts. If you notice, there is always good safety protection, unless the building goes up faster than they can put it up.

As I recall, the seismic activity in that area is quite frequent, but has had a long history of relatively minor events.

The construction there is a different concept and is not necessarily cost/economic based because of the needs.

Dick

Engineer and international traveler interested in construction techniques, problems and proper design.

 

[MiketheEngineer]

I am not staying there!!

 

[concretemasonry]

The construction technique (slabs loaded with materials and equipment lifted up daily)looks very similar to the construction of the 28 story masonry Excalibur in Las Vegas. - 4 buildings arranged so 2 semi-connected building were at the corners. That structure used concrete lift slabs for floors that were cast on top of each other in reverse order. They were on a one floor per day lifting schedule with 24 hour site activity.

I guided 3 different Chinese engineer/construction groups through the Excalibur and was even able to get a couple of sets of drawing for them. Most of the engineers were educated in the U.S. (heavy on Stanford, Illinois and USC).

The Chinese shaking table for structures looks like one in Japan that is used for seismic testing.

Dick

Engineer and international traveler interested in construction techniques, problems and proper design.

 

[denoid]

I always liked Tinkertoys.

 

[concretemasonry]

The difference between the Excalibur and the Chinese buildings are that the Excalibur had masonry shear walls built daily in place, so the slabs just had to be connected properly. In the Chinese building, the frames had to have the lateral bracing incorporated into the frames.

If you like Tinkertoys, just go to Russia and the "provinces" and look at the repetitive precast concrete structures where they seemed to build the same buildings everywhere in groups of 10 to 30 irregardless of the local conditions and loading. The Albanian seismic collapses are an example of the problems.

Dick

Engineer and international traveler interested in construction techniques, problems and proper design.