The Construction Thread

[thør]

How safe would you feel living next door to it?

As long as the buildings are far enough apart.

http://www.ce.washington.edu/~liquefaction/selectpiclique/nigata64/tiltedbuilding.jpg

But, I'm not one for living in a hive with all the other bees.

 

[Saint Peter]

Dominoes.

Which I was okay with until thør brings up the whole canal stability issue.

 

[Saint Peter]

As long as the buildings are far enough apart.

But, I'm not one for living in a hive with all the other bees.

The buildings seem to stay together on the way down. I do not dwell much on if the building is solid or not. I walk in the front door and catch an elevator to right floor.

I hope whoever crunched all those numbers got plenty of sleep the night before.

 

[thør]

Which I was okay with until thør brings up the whole canal stability issue.

Plus.......

"Note that the seismic zone of Shanghai is considered moderate in the Chinese seismic design code."

 

[thør]

The buildings seem to stay together on the way down. I do not dwell much on if the building is solid or not. I walk in the front door and catch an elevator to right floor.

I hope whoever crunched all those numbers got plenty of sleep the night before.

The tilted Japanese buildings were because of soil liquifaction during an earthquake. Note, that when the earthquake stopped, so did the liquifaction and the buildings stayed on a slant.

 

[Saint Peter]

The tilted Japanese buildings were because of soil liquifaction during an earthquake. Note, that when the earthquake stopped, so did the liquifaction and the buildings stayed on a slant.

When the soil is squishing between your toes it is time to find a new place to build.

 

[thør]

When the soil is squishing between your toes it is time to find a new place to build.

I see the clue stick isn't required.....

 

[rosco rathbone]

I walk in the front door and catch an elevator to right floor.

"I got off the elevator and I was still on the ground!"

 

[Batch]

I was in the same room with an engineer once so I feel confident to make a supposition, or at least, a WAG.

There had been a hole dug for a parking structure adjacent the building. On the other side of the building there is that canal, river or whatever. Note the elevation of the water in the canal is pretty high and that puts a high water table over by the building. The digging of the hole caused a situation that caused lateral support for the foundation (on the non-canal side) to give way. If there was some seepage through the soils, there might have been a bit of liquifaction or some artesian flow. Soils have virtually no strength in that situation. Had the hole been deep enough, they might have lost more than the building, perhaps the dike on the canal.

Just a thought, from looking at the pics.

you'd think the footings would be massive?

 

[rosco rathbone]

you'd think the footings would be massive?

Probably bamboo pilings driven by a gang of guys hauling the drop hammer up on a rope.

 

[Batch]

Probably bamboo pilings driven by a gang of guys hauling the drop hammer up on a rope.

Well. Stunning. Just beyond stunning.

 

[thør]

Probably bamboo pilings driven by a gang of guys hauling the drop hammer up on a rope.

I've driven stuff with drop hammers. Not bamboo, though.

The piles are interesting.

http://farm4.static.flickr.com/3405/3669069541_41ce46ab83.jpg?v=0

http://farm4.static.flickr.com/3582/3669069737_b25a4d478b.jpg?v=0

Some sort of hollow concrete pile with little to no reinforcing in it.

 

[Batch]

not even rebar.

 

[rosco rathbone]

I've driven stuff with drop hammers. Not bamboo, though.

The piles are interesting.

http://farm4.static.flickr.com/3405/3669069541_41ce46ab83.jpg?v=0

http://farm4.static.flickr.com/3582/3669069737_b25a4d478b.jpg?v=0

Some sort of hollow concrete pile with little to no reinforcing in it.

WTF is that? It looks like big-ass bamboo...

Did they shear off or just pull out of the ground....not very long, eh?

 

[thør]

not even rebar.

I thought i saw a piece in the first pic......a piece....

WTF is that? It looks like big-ass bamboo...

Did they shear off or just pull out of the ground....not very long, eh?

It's really hard to tell with these photos.....it looks like some might have failed in tension, but it was prolly a combined failure mode

 

[Batch]

I thought i saw a piece in the first pic......a piece....



It's really hard to tell with these photos.....it looks like some might have failed in tension, but it was prolly a combined failure mode

There are singles spread about... I would have thought bundling them, and having deeper and thicker footings to be the logical way to go.

 

[thør]

There are singles spread about... I would have thought bundling them, and having deeper and thicker footings to be the logical way to go.

I've seen projects where they 'forgot' to put the steel in the mud......

 

[rosco rathbone]

I've seen projects where they 'forgot' to put the steel in the mud......

Easier to do when it's soft, for sure.

 

[thør]

Easier to do when it's soft, for sure.

Yup.

And one project where the insulation was bought for the project, but never installed......

People noticed.......but only things went south....

 

[rosco rathbone]

Old school guy-derrick still in use in granite quarry, Stonington ME.

Photographed by me from boat.

 

[Saint Peter]

Old school guy-derrick still in use in granite quarry, Stonington ME.

Photographed by me from boat.

Very cool pic. Getting those first few cables set does not look like and easy task.

 

[rosco rathbone]

Very cool pic. Getting those first few cables set does not look like and easy task.

I tried to talk the captain into stopping on that island, but no one else on the boat was interested in cranes, big-ass drills and huge blocks of rock.

 

[thør]

Old school guy-derrick still in use in granite quarry, Stonington ME.

Photographed by me from boat.

Loggers use those........well, when they're clearcutting.....

 

[rosco rathbone]

Loggers use those........well, when they're clearcutting.....

Yeah? I thought they just rigged a highline.

 

[TikkaT3]

I got a question for you.

Our fabrication foreman is about to take his first vacation since he took over and he’s nervous. He’s young and this is his first time in a supervisory position.

He has confided that he is worried that his people will perform well in his absence. He thinks it will show he is not needed and can be replaced by anyone.

I told him that if his people do well in his absence it shows that he is a good supervisor that trains his people well.

What would you think? Should he be nervous or not?