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(WPTV)   Come live in Florida, where the sun is bright, the beaches are warm and the SINKHOLES SWALLOW YOU WHOLE WHILE YOU'RE SLEEPING   (wptv.com) divider line 127
    More: Scary, sleeps, beaches  
•       •       •

7242 clicks; posted to Main » on 01 Mar 2013 at 10:36 AM (2 years ago)   |  Favorite    |   share:  Share on Twitter share via Email Share on Facebook   more»



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2013-03-01 03:56:18 PM  
Way crappier headline
Is way crappier!!!
 
2013-03-01 04:00:57 PM  

Stephen_Falken: Fark Rebel Soldier
Andromeda Strain, 1971.
/come at me bro



Project: Wildfire, FTW.

Don't forget to cover your eyebrows during decontamination.
 
2013-03-01 04:15:54 PM  

Stephen_Falken: Andromeda Strain, 1971.
/come at me bro


give me doughnuts: Project: Wildfire, FTW.

Don't forget to cover your eyebrows during decontamination.


Nice.
 
2013-03-01 04:24:28 PM  
starscream1690:
 polje,  swallet,  karst

I just got done reading John McPhee's Annals of the Former World. Geologists have a language that sounds like Martian to the average uneducated guy like me. I loved the book.
Now sinkhole is a word that sounds like what it is - the hole you cut in a kitchen countertop.
 
2013-03-01 04:40:23 PM  
OK, who's the smartass that put the pentagram under the bed?

dude went straight to hell ---- well he was already in Florida so not much of a difference.
 
2013-03-01 04:59:23 PM  
Sleep tight, kiddos!
 
2013-03-01 05:00:11 PM  
Wow, the local news says the guy was supposed to move out of the house tomorrow.

That is some really bad luck there, guy.
 
2013-03-01 05:53:56 PM  

Elegy: PunGent: Dang.

So what do you do if you want to buy a house down there? Hire GP radar? too expensive?

Pray?


J.Shelby:  When I bought my house, I completely ignored the sinkhole issue, mostly because its not an issue.  In spite of crazy stories like this, its incredibly rare.  You're much more likely to be struck by lightning than have a sinkhole under your house.  Also, sinkhole insurance covers damage, and personal injury is almost unheard of.

Sinkhole problems are pretty common, and are becoming moreso with Florida's ever expanding population and the drain on the water table (plant city strawberry farmers anyone). Dramatic overnight loss of life and/or property are much less common and generally only happen about once a year. Most sinkhole damage happens as damage to the foundation that needs immediate remediation to ensure the house remains livable; this is so common that there is an ongoing battle over insurance fraud and insurance rates in Florida over it. A couple of years ago Hillsborough county insurance companies wanted to raise their premiums something like 500% in one year on ALL customers just to cover sinkhole claims and related frauds; I think state regulators ended up giving them something like a 30% hike.

As for detecting a sinkhole before you buy a house, there's really no good way to know for sure. Pretty much you inspect the house and make sure there are no cracks in the walls/windows and doors fit right, either which would indicate the ground under the hosue is moving. And then you pay a high premium for sinkhole insurance and hope you never have to file a claim. So yeah, prey.

Generally, when you file a claim, the insurnace company will come out and do a blow count test, which is generally more reliable than GPR, which can only detect features at a limited depth. Essentially, they take a steel rod and drive it into the ground using a standard weight dropped from a standard height and calculate how far the rod moves with each set of blows. ...


I've monitored Standard Penetration Testing, and that's basically the gist. Currently, I monitor the grouting side of things, i.e. I make sure the contractors put the grout injection pipes in the prescribed locations, and then keep track of how many cubic yards of grout goes into each one.
 
2013-03-01 05:57:20 PM  

starscream1690: Elegy:

Generally, when you file a claim, the insurnace company will come out and do a blow count test, which is generally more reliable than GPR, which can only detect features at a limited depth. Essentially, they take a steel rod and drive it into the ground using a standard weight dropped from a standard height and calculate how far the rod moves with each set of blows. ...

Sounds like this ain't your first rodeo.  Yep, GPR, and its counterpart electrical resistivity imaging (ERI, which the engineers shown in the video that USA Today has up right now are doing incorrectly (I'd point this out in their comments but it links through FB)) give you a good idea what's going on but they are far from infallible in an urban environment with tons of anthropogenic interference.  The standard penetration test borings are what really confirm or deny a claim.

Of course in this case it's gone a good bit past confirming sinkhole activity, now they are just trying to get a grasp on how big the hole will end up being, and how much concrete will have to be used to shore it up.


What company do you work for? I'm with a small local firm out of Lake Wales- MCD of Central Florida.
 
2013-03-01 06:18:32 PM  

FLMountainMan: mikaloyd: Elegy: Confabulat: Seffner is not South Florida. It's Hillsborough County, up here by Tampa.

Technically correct, but as I live in the panhandle, anything south of Gainesville is South Florida to me.

/derp
//I feel stupid now

Huh. Florida has a pecking order. Who knew?

A rather complex one.
Miami+Ft. Lauderdale = capital of the Third World.
Rest of South Florida = old rich yankees.
Orlando and Atlantic Coast = poor yankee trash.
Naples+Sarasota = rich old midwesterners.
Tampa/St. Pete = poor yankee trash with a few Cubans and SE Asians sprinkled in.
Land around the Big O (Lake Okeechobee) = the old west, with tons of Cowboys, Indians, and wide open spaces.
Central Florida, excepting Orlando = hillbillies+Ohio meth addicts.
Panhandle = the South.


Brevard County= The Florida of Florida
 
2013-03-01 06:20:33 PM  
b.vimeocdn.com
 
2013-03-01 06:45:54 PM  
Man: "ZZzzzzzzz"
Earth: "OM NOM NOM NOM!!!"

What a seriously farked up way to go, though. All the reports are saying the hole is only estimated at, like, 20-ish feet deep, but since there have been no noises from the guy since right after this happened I'm guessing the hole has filled in with, like,  house, or the surrounding sand? I'm a space-science person, not a dirt-science one, so I'm not really sure how these things work... in my head I imagine every sinkhole that opens up having a visible molten river of golden lava flowing beneath it, although I've never seen pics to support that. So if he isn't swept away and melted by the molten lava river, he's crushed to death / asphyxiated by the shiat that collapsed with him?
 
2013-03-01 07:08:30 PM  

Wollffeey: Elegy: PunGent: Dang.

So what do you do if you want to buy a house down there? Hire GP radar? too expensive?

Pray?


J.Shelby:  When I bought my house, I completely ignored the sinkhole issue, mostly because its not an issue.  In spite of crazy stories like this, its incredibly rare.  You're much more likely to be struck by lightning than have a sinkhole under your house.  Also, sinkhole insurance covers damage, and personal injury is almost unheard of.

Sinkhole problems are pretty common, and are becoming moreso with Florida's ever expanding population and the drain on the water table (plant city strawberry farmers anyone). Dramatic overnight loss of life and/or property are much less common and generally only happen about once a year. Most sinkhole damage happens as damage to the foundation that needs immediate remediation to ensure the house remains livable; this is so common that there is an ongoing battle over insurance fraud and insurance rates in Florida over it. A couple of years ago Hillsborough county insurance companies wanted to raise their premiums something like 500% in one year on ALL customers just to cover sinkhole claims and related frauds; I think state regulators ended up giving them something like a 30% hike.

As for detecting a sinkhole before you buy a house, there's really no good way to know for sure. Pretty much you inspect the house and make sure there are no cracks in the walls/windows and doors fit right, either which would indicate the ground under the hosue is moving. And then you pay a high premium for sinkhole insurance and hope you never have to file a claim. So yeah, prey.

Generally, when you file a claim, the insurnace company will come out and do a blow count test, which is generally more reliable than GPR, which can only detect features at a limited depth. Essentially, they take a steel rod and drive it into the ground using a standard weight dropped from a standard height and calculate how far the rod moves with each set of blows. ...

I've monitored Standard Penetration Testing, and that's basically the gist. Currently, I monitor the grouting side of things, i.e. I make sure the contractors put the grout injection pipes in the prescribed locations, and then keep track of how many cubic yards of grout goes into each one.


Wow, I had to do a quick check to see if you were one of ours :)
 
2013-03-01 07:12:14 PM  

Wollffeey: starscream1690: Elegy:

Generally, when you file a claim, the insurnace company will come out and do a blow count test, which is generally more reliable than GPR, which can only detect features at a limited depth. Essentially, they take a steel rod and drive it into the ground using a standard weight dropped from a standard height and calculate how far the rod moves with each set of blows. ...

Sounds like this ain't your first rodeo.  Yep, GPR, and its counterpart electrical resistivity imaging (ERI, which the engineers shown in the video that USA Today has up right now are doing incorrectly (I'd point this out in their comments but it links through FB)) give you a good idea what's going on but they are far from infallible in an urban environment with tons of anthropogenic interference.  The standard penetration test borings are what really confirm or deny a claim.

Of course in this case it's gone a good bit past confirming sinkhole activity, now they are just trying to get a grasp on how big the hole will end up being, and how much concrete will have to be used to shore it up.

What company do you work for? I'm with a small local firm out of Lake Wales- MCD of Central Florida.


Sorry missed this post, I'm with Geohazards. We got on All Things Considered today over this.

Also sorry my iPhone app won't let me clip the quote :(
 
2013-03-01 07:40:25 PM  

J.Shelby: Yes, here in Tampa, we have terrible horrors.  Gators, giant snakes, sinkholes, gators, sharks, hurricanes, gators, deadly spiders, all kinds of deadly vipers, gators, and maybe more gators.  Don't come here.


I think I'll stay in Clearwater, where it's safe
 
2013-03-01 07:51:32 PM  
assets.diylol.com
 
2013-03-01 08:19:56 PM  

Elegy: Glancing Blow: Gabrielmot: Confabulat: /not a grammar nazi

My guess is the hole is still inside the house. There's no photos of the hole a

Jesus people... RTFA.

The sinkhole is naturally occurring and appears to be about 100 feet (30 meters) across, based on estimates made by engineers using radar, and it may be as deep as 50 feet, authorities say. It's not visible except inside the home.

Thank you sir, now could you help me with the math?  Don't you think the house has a rather large footprint if a 7,850 square foot hole can be hidden inside with room to spare? Diameter alleged to be 100', so 50*50*3.14=7850.

Ok, I got this one guys.

Catastrophic sinkholes like this are called "cover collapse" sinkholes. They happen because the sediments on top of the limestone have enough clay in them to stick together without the support of rock underneath. These features tend to collapse all at once (catostrophicly, even) because the topsoil holds over a void, sometimes for years, before collapsing all at once. Contrast to areas that have more sand in topsoil, where you get subsidence sinkholes that look like shallow, sandy depressions.

So what you have here is a large void, covered by a dome of clay. That clay collapse at the point where the guy's room was, sucking him into the void underneath the topsoil.

The emergency crews would have run ground penetrating radar around the house. Hence, they can tell that the void itself is quite large, large enough to swallow the house. However, the remaining topsoil is still holding together, and the only breach is inside the house. For how long, no one knows - hence the large safety zone around the house and why they won't let rescue crews near it.

So yes, the sinkhole is probably larger than the house. It's just that currently, the only area of topsoil that has given way is the small area under the bedroom.

Does that make sense?


Thank you sir. I came back to check on this thread, and because of you, I didn't shoot myself in the head.

I was almost about to grow a neckbeard and start a reddit account.

/my hero
 
2013-03-01 09:01:55 PM  

GoSurfing: FLMountainMan: mikaloyd: Elegy: Confabulat: Seffner is not South Florida. It's Hillsborough County, up here by Tampa.

Technically correct, but as I live in the panhandle, anything south of Gainesville is South Florida to me.

/derp
//I feel stupid now

Huh. Florida has a pecking order. Who knew?

A rather complex one.
Miami+Ft. Lauderdale = capital of the Third World.
Rest of South Florida = old rich yankees.
Orlando and Atlantic Coast = poor yankee trash.
Naples+Sarasota = rich old midwesterners.
Tampa/St. Pete = poor yankee trash with a few Cubans and SE Asians sprinkled in.
Land around the Big O (Lake Okeechobee) = the old west, with tons of Cowboys, Indians, and wide open spaces.
Central Florida, excepting Orlando = hillbillies+Ohio meth addicts.
Panhandle = the South.

Brevard County= The Florida of Florida


Conch Republic = Feces
 
2013-03-01 11:21:44 PM  
images1.wikia.nocookie.netWanted for questioning
 
2013-03-02 03:23:56 AM  

valar_morghulis: There's a sinkhole in Gainesville that's basically become an entire ecosystem. Paine's Prairie.


Used to be a lake. Sink opened and lake disappeared overnight.
 
2013-03-02 07:28:40 AM  

starscream1690: Wollffeey: starscream1690: Elegy:

Generally, when you file a claim, the insurnace company will come out and do a blow count test, which is generally more reliable than GPR, which can only detect features at a limited depth. Essentially, they take a steel rod and drive it into the ground using a standard weight dropped from a standard height and calculate how far the rod moves with each set of blows. ...

Sounds like this ain't your first rodeo.  Yep, GPR, and its counterpart electrical resistivity imaging (ERI, which the engineers shown in the video that USA Today has up right now are doing incorrectly (I'd point this out in their comments but it links through FB)) give you a good idea what's going on but they are far from infallible in an urban environment with tons of anthropogenic interference.  The standard penetration test borings are what really confirm or deny a claim.

Of course in this case it's gone a good bit past confirming sinkhole activity, now they are just trying to get a grasp on how big the hole will end up being, and how much concrete will have to be used to shore it up.

What company do you work for? I'm with a small local firm out of Lake Wales- MCD of Central Florida.

Sorry missed this post, I'm with Geohazards. We got on All Things Considered today over this.

Also sorry my iPhone app won't let me clip the quote :(


Ha! I knew it, I just didn't want to make any assumptions. And.. congrats about getting on the news... I guess. Though, under the circumstances, I don't suppose this is a good thing.
 
2013-03-02 09:55:57 AM  

Elegy: PunGent: Dang.

So what do you do if you want to buy a house down there? Hire GP radar? too expensive?

Pray?


J.Shelby:  When I bought my house, I completely ignored the sinkhole issue, mostly because its not an issue.  In spite of crazy stories like this, its incredibly rare.  You're much more likely to be struck by lightning than have a sinkhole under your house.  Also, sinkhole insurance covers damage, and personal injury is almost unheard of.

Sinkhole problems are pretty common, and are becoming moreso with Florida's ever expanding population and the drain on the water table (plant city strawberry farmers anyone). Dramatic overnight loss of life and/or property are much less common and generally only happen about once a year. Most sinkhole damage happens as damage to the foundation that needs immediate remediation to ensure the house remains livable; this is so common that there is an ongoing battle over insurance fraud and insurance rates in Florida over it. A couple of years ago Hillsborough county insurance companies wanted to raise their premiums something like 500% in one year on ALL customers just to cover sinkhole claims and related frauds; I think state regulators ended up giving them something like a 30% hike.

As for detecting a sinkhole before you buy a house, there's really no good way to know for sure. Pretty much you inspect the house and make sure there are no cracks in the walls/windows and doors fit right, either which would indicate the ground under the hosue is moving. And then you pay a high premium for sinkhole insurance and hope you never have to file a claim. So yeah, prey.

Generally, when you file a claim, the insurnace company will come out and do a blow count test, which is generally more reliable than GPR, which can only detect features at a limited depth. Essentially, they take a steel rod and drive it into the ground using a standard weight dropped from a standard height and calculate how far the rod moves with each set of blows. ...


Thanks for all the info, guys.
 
2013-03-02 09:59:16 AM  

BrieBelle00: Man: "ZZzzzzzzz"
Earth: "OM NOM NOM NOM!!!"

What a seriously farked up way to go, though. All the reports are saying the hole is only estimated at, like, 20-ish feet deep, but since there have been no noises from the guy since right after this happened I'm guessing the hole has filled in with, like,  house, or the surrounding sand? I'm a space-science person, not a dirt-science one, so I'm not really sure how these things work... in my head I imagine every sinkhole that opens up having a visible molten river of golden lava flowing beneath it, although I've never seen pics to support that. So if he isn't swept away and melted by the molten lava river, he's crushed to death / asphyxiated by the shiat that collapsed with him?


Yep, I'd bet crushed/asphyxiated, and probably not quick enough.
There've been utility workers killed in trenches a lot shallower than 20'; that's why they use those reinforced steel plate cages when they dig.

If you're pinned, probably only takes a couple hundred pounds of dirt/debris to slowly shut down your breathing...quicker if you broke a rib or two.  Nasty way to go.

Plus, of course, the C.H.U.D.S.
 
2013-03-02 02:37:09 PM  
It swallowed him whole?  This is MADNESS!

bbsimg.ngfiles.com
 
2013-03-02 02:46:35 PM  
YIKES
 
2013-03-03 02:22:34 AM  
I live quite close to the sinkhole site, so I'm getting a k...

Actually, I find it all quite unsettling.
 
2013-03-04 09:48:26 AM  
For people like me that obsessively keep up with threads, I pulled the LiDAR for the area around this guys house in Friday and just got a chance to post it.

As expected, the whole area has been terraformed, but there are some fairly big karst features less than two miles away (red arrows) from the guys house (green dot)

Link
 
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