The Construction Thread

[thør]

Cranes crash/collapse in India

"Following a story from yesterday in the AP about a New Delhi bridge collapse, the Wall Street Journal reports, "A huge crane involved in cleaning up the site of a fatal Delhi Metro construction accident collapsed Monday, heightening safety fears about one of India's flagship infrastructure projects. ... The extent of the damage was unclear, with some reports of injuries." Meanwhile, "officials updated the death toll to six from five in Sunday's collapse of a bridge being built by Delhi Metro Rail Corp. in South Delhi. Delhi Metro Managing Director E. Sreedharan attempted to resign over the incident, but was persuaded to remain on the job, a spokesman said."
According to the AP, "Three cranes crashed Monday while trying to lift a steel girder that fell" at the construction site. Delhi Metro spokesman Anuj Dayal said that "four truck-mounted cranes lifted the massive orange girder off the ground when one sustained a mechanical failure in its boom - the long arm used to lift weight. ... The sudden shift of extra load caused the booms of two cranes to snap while the third crane toppled over.' The AP noted, "The third crane keeled over and ended up in a vertical position with its underbelly in the air.""

 

[chillywilly2]

Trying to drill into reinforced concrete to set anchor bolts. A lot of times you hit rebar and the anchors go in all cockeyed.

core drill

we just did 150, 1 1/2" dia 12" deep in a new concrete retaining wall because the rebar guys put the bar in the wrong face of the wall.
We had to install braces. $80,000.00 to fix a wall 40' long and 25' high

 

[chillywilly2]

"Following a story from yesterday in the AP about a New Delhi bridge collapse, the Wall Street Journal reports, "A huge crane involved in cleaning up the site of a fatal Delhi Metro construction accident collapsed Monday, heightening safety fears about one of India's flagship infrastructure projects. ... The extent of the damage was unclear, with some reports of injuries." Meanwhile, "officials updated the death toll to six from five in Sunday's collapse of a bridge being built by Delhi Metro Rail Corp. in South Delhi. Delhi Metro Managing Director E. Sreedharan attempted to resign over the incident, but was persuaded to remain on the job, a spokesman said."
According to the AP, "Three cranes crashed Monday while trying to lift a steel girder that fell" at the construction site. Delhi Metro spokesman Anuj Dayal said that "four truck-mounted cranes lifted the massive orange girder off the ground when one sustained a mechanical failure in its boom - the long arm used to lift weight. ... The sudden shift of extra load caused the booms of two cranes to snap while the third crane toppled over.' The AP noted, "The third crane keeled over and ended up in a vertical position with its underbelly in the air.""

4 cranes to lift one beam?

sounds a tad dangerous to me


and I guess it was considering they all fell over

condolences for the dead though

 

[thør]

Made in China

http://www.kimchisoup.com/wp-content/uploads/2009/06/shanghai-building-collapse-550x344.jpg

http://globizenproperty.com/wp-content/uploads/2009/07/shanghai_collapse.jpg

http://www.poe-news.com/imgs/story/81397-81397-shanhicollapse.jpg

 

[rosco rathbone]

core drill

we just did 150, 1 1/2" dia 12" deep in a new concrete retaining wall because the rebar guys put the bar in the wrong face of the wall.
We had to install braces. $80,000.00 to fix a wall 40' long and 25' high

Bosch hammer drill. Woogle it around trying to get an angle past the rebar, and if you can't, then blow a new hole in the plate.

 

[rosco rathbone]

4 cranes to lift one beam?

sounds a tad dangerous to me


and I guess it was considering they all fell over

condolences for the dead though

Yeah, like to see a picture or vid of this. Sounds like they bit off more than they could chew.

 

[where]

Bosch hammer drill. Woogle it around trying to get an angle past the rebar, and if you can't, then blow a new hole in the plate.

ohhhh! I've got one of those!


can't believe no one has posted this...

http://news.bbc.co.uk/1/hi/entertainment/8154643.stm

 

[thør]

Bosch hammer drill. Woogle it around trying to get an angle past the rebar, and if you can't, then blow a new hole in the plate.

But, an $80k change order is where $$ can be made.

 

[rosco rathbone]

But, an $80k change order is where $$ can be made.

Good point.

 

[thør]

Good point.

No comment on the Chinese apartment structure? People hadn't moved in, yet.

 

[Saint Peter]

http://www.kimchisoup.com/wp-content/uploads/2009/06/shanghai-building-collapse-550x344.jpg

http://globizenproperty.com/wp-content/uploads/2009/07/shanghai_collapse.jpg

http://www.poe-news.com/imgs/story/81397-81397-shanhicollapse.jpg

Unreal.

Interesting pics, thɵr!

 

[rosco rathbone]

I like how the whole thing went over sideways.

Why did it fall, Thor?

 

[rosco rathbone]

Sorry, that should be "why did the structure experience a foundation failure".

Soft soils?

 

[Saint Peter]

Sorry, that should be "why did the structure experience a foundation failure".

Soft soils?

http://dailyreporter.com/blog/tag/lotus-riverside/

They needed a parking garage.

 

[rosco rathbone]

http://dailyreporter.com/blog/tag/lotus-riverside/

They needed a parking garage.

How embarrassing.

 

[thør]

I like how the whole thing went over sideways.

Why did it fall, Thor?

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.

 

[rosco rathbone]

Building looks to be in good shape. With a couple of dirigibles they ought to be able to just trip it back upright once they pour a real foundation.

 

[thør]

Building looks to be in good shape. With a couple of dirigibles they ought to be able to just trip it back upright once they pour a real foundation.

Skyhooks............

I can see the ad of Craigslist

Free 13 story apartment building, like new. You move to new site.

 

[rosco rathbone]

I just caught myself using the phrase "absurdly high shenanigans-to-work ratio" .

 

[rosco rathbone]

Skyhooks............

I can see the ad of Craigslist

Free 13 story apartment building, like new. You move to new site.

Been looking for those damn ten ton skyhooks all morning. The yard sent me to the tool room, the tool room sent me back to the yard. It's like a runaround or something.

 

[thør]

Been looking for those damn ten ton skyhooks all morning. The yard sent me to the tool room, the tool room sent me back to the yard. It's like a runaround or something.

The problem is, the ten tonners are all out on the job. I'm sure there's a 12.5 ton one in there. It's starting to rain hard. Use this sheet of PVA to keep the rain off you while you fetch that hook.

 

[Saint Peter]

How safe would you feel living next door to it?

 

[rosco rathbone]

The problem is, the ten tonners are all out on the job. I'm sure there's a 12.5 ton one in there. It's starting to rain hard. Use this sheet of PVA to keep the rain off you while you fetch that hook.

Finally, a straight answer.

/runs off into mud

 

[rosco rathbone]

How safe would you feel living next door to it?

Dominoes.

 

[HoHoBomb]

http://i394.photobucket.com/albums/pp30/10312008/godzilla.jpg?t=1247946097​