Anybody want to guess what happened here?

squowse, post: 340423, member: 7109 wrote: post-tensioning shortened the structure and decreased the radius?
seems a bit extreme but you can't see how long the structure is, or how tight the radius is.
is it possible?

Not a chance.

I've been speculating that the column was laid out from grid coordinates, while the prefab concrete roadway was built using ground scale dimensions.

Somebody effed up big time! How did it get left like that? You would think they'd correct the column position before put the road on top....

Maybe they are replacing the bearing pads on the column, and have jacked up the structure and slid it sideways to get the new bearing pads to fit, or most likely when they jacked it up, it slid sideways by accident to due incorrect jacking technique.

Perhaps the bridge is old and the column is new with demo of the bridge deck to take place as they put in the replacement.

How far is this from earthquake central?

What happened? I'd say someone got fired.

Close enough for government work (sorry Dave). 😉

the bridge column is being moved.
look carefully, directly above the the right edge of the new column.

"It's close enough, we ain't building pianos here ya know."

As an old Party Chief used to say.

http://www.reuters.com/news/picture/india-overpass-collapses?articleId=USRTSCZ78&apos ;">India overpass collapses Not the same construction but obviously dangerous. You can't really say Indians are the most intelligent people on the planet, but they have their fair share geniuses, makes you wonder how this stuff happens.

That would be the one they were talking about on the middle of the night news a couple of nights ago. As soon as I heard what had collapsed I thought of this thread from months ago.

Horrific.
I remember oh so well the https://en.wikipedia.org/wiki/Cypress_Street_Viaduct&apos ;">Cypress Structure.

I'm sure the surveyor was blamed for it.

Contractors worst nightmare. Rat-a-tat-tat = concrete eraser:8ball:

Actually, it's very obvious................during construction,.someone used the wrong offset. Happens all the time.

Same guys who built this fence?

wkiernan, post: 391630, member: 9902 wrote: Same guys who built this fence?

I came name that client/ owner in 5 keystrokes, Tom. {but, I won't}. The telltale is dancing with certain guidelines by disconnecting tread/ riser totals. That gate location only adds strength to my hunch. :yum:

The fence contractor was just following the dimensions on the plans.
If he changed the planned gate location, he was afraid he might not get paid.
By looking at the healthy grass growth, the stairs came first.
OR
The HOA was sued because of a ped accident on their irregular stair risers and treads.
So they are just trying to route peds around the hazard.

John Margaroni, post: 391668, member: 12076 wrote: The fence contractor was just following the dimensions on the plans.
If he changed the planned gate location, he was afraid he might not get paid.
By looking at the healthy grass growth, the stairs came first.
OR
The HOA was sued because of a ped accident on their irregular stair risers and treads.
So they are just trying to route peds around the hazard.

I like the irregular stair theory, maybe they put the fence and gate up before they build a new stairway, and they are going to tear out the old stairs.

Scott,
You have good taste in artwork. I have the same Dan Kertzler , "Surveying Instruments of the 1960s",
on my office wall. It always reminds me of where I came from.