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Discussion Starter · #1 ·
From Wendell Strode:
2/17/2014 Update - activity picked up as workers began doing various tasks back in the Sky Dome, including removing some of the yellow panels. See my previous update from the local TV station. In the meantime, there was a meeting in our conference room with all the major players.......5 from the construction management firm, 4 from the Geo Tech engineering firm, 2 from the civil engineering firm, 2 from WKU Center for Cave and Karst Studies, 1 from environmental engineering firm, 1 from Chubb Insurance, 3 consultants retained by Chubb and 3 from the NCM.

Lots of discussion concerning future plans. While there will always be some decisions made onsite and when executing the agreed on plan, this is what I understood to be the agreed on plan.
(1) Secure and Stabilize the red spire. Hayward Bacon Inc. the Geo Tech engineering firm will be handling this.
(2) Extract the 3 cars that are on top and appear to be easily accessible.
(3) Secure and stabilize the sinkhole area (various options discussed)
(4) Extract the remaining cars. Please note previous photo from the National Corvette Museum that showed six of the cars.
(5) Begin work on mitigating the entire sinkhole area. This will include exploring the caverns that can be seen in some of the previous video/photos. At this time, the plan is to remove all the dirt from the sinkhole to allow the WKU Cave/Karst professionals and others to see the floor and the caverns (some people get excited about going down and into these areas). One observation that was repeated today and I do not believe I have shared with everyone - for the sinkhole to be 25 - 30 feet deep, then it had to fall that far........so 'bottom' will be another 25 - 30 feet deep......or approximately 60 feet actual depth.
(6) Finalize plan and implement plan to mitigate the entire sinkhole area.
(7) Finalize plan and then execute plan for repairs to Sky Dome floor.

Keep in mind that this is a layman's understanding and summary of all the discussion and agreements reached from about 7 - 8 hours of talks. Tomorrow I plan to visit with the Construction Manager and confirm this. If different I will share with you in the next day or two.

Hayward Bacon will have equipment and employees here within two days and will begin (1) above. This will not be an easy task, but one they are very comfortable doing and I guess this is why they are the # 1 geo tech engineering firm in the world.

In the meantime, several other tasks were agreed on. Cost estimates are being prepared for each of these. While every professional associated with this project feels confident that this sinkhole is an isolated case, a series of drillings, borings and tests will be completed.

The Sky Dome and the area out back (old PDI and the parking area out back) will become a full fledge construction zone. Temporary fence will be installed and the Construction Manager will be bringing in a trailer (office). We will have night time security and there will be times it will be 24 hours. The companies involved with this plan to work 5 10-hour days and 8 hours on Saturday.

We will be renting a warehouse to take the excess cars to as we are crammed tight right now.

Probably no update tomorrow as mostly it is doing what we outlined above. Scripture tells us that God's compassion never fails.....that they are renewed every morning and great is His faithfulness. His love has been awesome this far on our journey and knowing He will be with us and His compassion for us will be renewed tomorrow and all other tomorrows gives all of us strength for the journey.

In the meantime, the public hearing for the Detailed Development Plan for the NCM Motorsports Park is scheduled for 2/20/2014. This will be with the Planning and Zoning Commission. Our new General Manager has stepped right in and has been quite involved in every aspect of that. Working with our Construction Manager, Warren County Public Works, and civil engineering company, DDS Engineering, we believe this should be approved. This DDP will then allow us to apply for building permits for the control tower, garages and move forward with all our plans that are outlined on NCM Motorsports Park | National Corvette Museum Racetrack | Corvette Museum Road Course
 
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Article by local Bowling Green radio station WBKO with embedded video. Interesting facts about progress to date and upcoming vehicle recovery.


WBKO said:
National Corvette Museum: Eight Corvettes Swallowed By Sinkhole! Plans To Remove Corvettes!
"We will have vehicle recovery people that know all of the lifting points and devices to use in the rigging to lift it out properly without causing anymore damage."

BOWLING GREEN, Ky. (WBKO) -- Construction is well underway at the National Corvette Museum. Red tape is being put up; extra support is being added to the structure; and side panels are being taken out of the wall to make room for a crane. That crane has the big task of pulling the cars out of the sinkhole.

Geologists with WKU have been on the scene since the room first collapsed and said since that time, things in the sky dome have remained relatively calm opening up the door for construction.

"It looks pretty stable. We haven't seen any major movement where the cars are at. There's obviously some type of potential for some other type of cave or passage under there that it could move into," said WKU Geologist, Jason Polk.

Just to be safe holes are being cut into the floor and filled with concrete at key points to provide extra support for the spire that sits in the middle of the room. Once that's done a crane will be lowered into the area where pieces of wall have been taken out. Not only will someone be operating the crane, someone will also be attached to the end of the line to hook up the cars.

"We will have vehicle recovery people that know all of the lifting points and devices to use in the rigging to lift it out properly without causing anymore damage," said Scott, Murphy, & Daniel CEO, Mike Murphy.

The plan is for the wheels to be removed and replaced by bolts that attach the car to the crane for safe removal.

Construction officials add the first two Corvettes that fell inside the hole still haven't been seen. They know they're down there. They're just not sure if they're buried in soil or if they're sitting on rock. It adds a wrinkle to an already difficult excavation process.

The entire recovery is expected to take two weeks.
Video inside link below.

Corvette Reveals Plan To Remove Cars From Sinkhole
 

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Discussion Starter · #4 ·
Thanks for posting that elegant. The embedded video is very interesting. :cool:
 

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The Skydome camera at NCM has been moved so that everyone who is watching has a better view of the sink hole in the floor. It should be fun to watch the next two weeks to see just how the cars are removed!
 
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Look What's Arrived Inside The SkyDome!!I

In a sign of further and sustained progress..., the crane to eventually remove the cars has arrived.


Museum spokesman Stephanie Morrill also added that "steady progress continues this week with drilling, micro (support) piles being completed, testing, and a crane being brought in."
 

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Discussion Starter · #7 · (Edited)
Funny I was just looking at the live cam a short while ago. By the way, they now have 2 live cameras set up to watch the work in the dome.:cool:

Webcam Skydome
Webcam Skydome 2
 
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There are now 2 cameras in the Skydome so we can enjoy watching the recovery process. :cool:


I posted this one minute after you did jsvette!
 

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Discussion Starter · #9 ·
There are now 2 cameras in the Skydome so we can enjoy watching the recovery process. :cool:


I posted this one minute after you did jsvette!
Great minds think a like :rolleyes:
 

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And a minute after you folks, thanks to NCM, we have a detailed this week and next week construction repair, car removal plan.

"National Corvette Museum
THURSDAY, FEBRUARY 27, 2014
Skydome Update from Construction Manager, Car Extraction Plan

Providing timely updates on the Corvette sinkhole incident has always been a priority for the Museum. In an effort to provide everyone with as much information as possible, Mike Murphy with Scott, Murphy and Daniel, our Construction Management company, has written an update as to the work that has been completed and the plan for work moving forward.

OPERATION “CORVETTE PLUS”
We’ve named the project this because for something to raise from a base level ‘up’ equals moving in a ‘+’ direction. Our ultimate goal is to keep the existing building ‘up’ in its original position, raise the Corvettes in the hole ‘up’, then bring the fill in the hole ‘up’ and lastly, bring the concrete floor back ‘up’ to its original level.

We are very appreciative of the National Corvette Museum, Chubb Insurance and VanMeter Insurance Group to allow us to assemble the best group of professionals to effectively and accurately ‘heal this horrendous hole’ in the Skydome. Our reputation both in business and personally, obligates us to hold the best interest of our community partner in mind 24/7 until the project is completed.

“CORVETTE PLUS” ESTIMATED SCHEDULE
Since the beginning of the project, the number one goal is to ‘proceed cautiously ‘ with the recovery and reconstruction in such a manner to keep safety of the facility and the workers the main priority and number two, plan and perform in a positive (+) direction daily. Because there are so many unknowns within the boundaries of this project, having an exact schedule ‘in stone’ is not practical or possible. Every day’s planning and action determines the next step in executing a successful operation.

THIS WEEK (2/24/2014)
We began the week finishing shallow test borings in the remainder of the Skydome floor to insure there was no immediate danger of another sink hole collapse happening in the remaining floor space. These tests proved successful.

Before heavy equipment such as manlifts, excavators and cranes (which are on site and ready to approach the sink hole area) could be brought into the Skydome area, deeper test drilling was performed to insure a sufficient thickness of earth and rock was present to support this equipment’s entry and operation. The last test hole was completed Wednesday morning and the ‘positive data’ recorded has now been turned over to the engineers and geologists for their analysis and verification. Additionally on Wednesday, drillers moved their operation to the outside foundation of the Skydome and have begun the drilling, high-strength grouting and installation of steel cased micro piling connected to the dome’s perimeter foundation. This operation, securing and reinforcing the building’s foundation, will continue for approximately 1 ½ to 2 weeks.

Today, Thursday (2/26/14), we received ‘the go ahead’ by the professionals to give the ‘green light’ to bring equipment into the area and begin the set-up and preparation for the cranes to suspend engineers and contractors safely into the middle of the sink area and examine closer the condition of the hole and finalize the recovery plan, determine exact measurements for lifting and verify techniques for beginning the removal of the ‘three’ most assessable vehicles (those not embedded into the embankment). The mobilizing of equipment and accessories, along with the final planning and hole condition examination should finish this week’s work schedule through Saturday, as the outside piling installation continues. There is a suspended steel ring around the spire in which the lighting and sprinkler system is located. A quick test run on Wednesday is indicating the possibility to disconnect the system and raise it above the needed working area of the crane booms. This could possibly cause a day’s delay in the recovery operation should this be determined once cranes are in their designated positions.

Everyone should keep in mind that a special operation such as this cannot be on an ‘exact planned schedule’ like a new building under construction is often orchestrated. Concerns and calculations which insure the safety of the building and workforce will remain our #1 priority, even if it impedes our schedule to insure that each task is performed exact and successful.

NEXT WEEK (3/3/2014)
We anticipate if all plans and factors work successfully, the removal of the first three vehicles will begin during the day on Monday, in hopes to have all three cars extracted by Wednesday. The first car to be removed is the 2009 ZR1 "Blue Devil." There may be some complications when removing the 1962 Black Corvette because the 5 ton concrete slab resting against the front of the car must be lifted simultaneously and in conjunction with the lifting of the vehicle. We will be allowing approved media to film INSIDE of the Skydome during the first car's removal.

STAY TUNED
IF WE (Scott, Murphy & Daniel Construction) HAVE ANY CHANGES OR ALTERATIONS OF OUR SCHEDULE, WE WILL NOTIFY THE CORVETTE MUSEUM AND OFFER OUR BEST GUESS ‘UPDATES.’ "
 

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Discussion Starter · #12 · (Edited)
Right now (3:30 p.m. PST) on Skydome 1 camera you can see them lowering ropes into the sinkhole. So far they have dropped 3 from a 2 person basket lift that is just out of the top of the camera view (you can see the lift if you switch to Skydome 2).:cool:

sinkhole.jpg
 

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Discussion Starter · #14 ·

 

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Discussion Starter · #15 ·
Going back into the hole today:

NCM.jpg
 

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Discussion Starter · #16 · (Edited)
The third Corvette is retrieved!

3 vette.jpg

3rd Vette.jpg
 
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Discussion Starter · #17 ·

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Exciting to see how good a condition that third one is. National Corvette Museum, you have done a fantastic job of keeping us updated every step of the way. Thank you NCM!

Here's today's latest NCM update:

"1962 Black Corvette Successful Saved


It's been almost three weeks since a 40' wide, 60' deep sinkhole opened up within the Skydome of the National Corvette Museum, taking eight prized Corvettes with it. Construction and engineering teams have been hard at work since day one, putting a plan in place for the recovery of the cars and restoration of the building.


The recovery of the three most accessible Corvettes: the 2009 "Blue Devil" ZR1, a 1993 40th Anniversary Ruby Red Corvette and a 1962 Black Corvette commenced on Tuesday with all three cars being successfully saved. Monday's "Operation Corvette Plus" resulted in the recovery of the 2009 and the 1993 and nearly all day Tuesday was dedicated to the 1962 - a car that was recovered around 1:45pm CT giving spectators watching from the Museum's plexiglass viewing area and the construction and engineering crews a huge sigh of relief.


The team began work early Tuesday, extracting a portion of the car lift that had become mangled around the car, removing the hood from the '62 and tying a strap to the engine bay, then drilling anchors into the slab of concrete that appeared to be wedged into the grill. In hooking their lifting devices to the car they discovered that they didn't have to lift the slab to free the car. "Really, all that went better than I expected... that's my favorite car," said Mike Murphy, CEO of Scott, Murphy and Daniel Construction.


"I see body damage. The chassis looks intact, the frame's not bent, the interior (other than being a little dirty) is pristine. So, I think it's some fiberglass work, some ornamentation work, and paint," said John Spencer, Manufacturing Integration Manager at the GM Corvette Assembly Plant. "This car is in amazing shape considering what it's been through. I don't see anything unrepairable."


Murphy indicated that the next step will be to remove the concrete slab off the bank of the hole, and to remove the rest of the car lift. After those are out of the way they will begin stabilizing and securing the red spire and the walls of the hole. "I'm tickled to death that we were able to get those three cars out with no problems, and they were in good condition," he added.


All three cars are now on display in the Museum's Exhibit Hall. They will be joined in late April by the remaining five Corvettes - marking a culmination of the sinkhole recovery efforts. The Museum is planning a formal exhibit of these cars "as is," along with various photos, videos, information and artifacts through August 3. The plexiglass viewing area of the Skydome will be available as long as construction is on-going, and the 'dome' is expected to re-open by late August.


"While we don't know exactly how long the repair and remediation of the sinkhole will take, we feel confident that the Skydome will be as good as new in time for the Museum's 20th Anniversary Celebration," said Executive Director Wendell Strode. "August 27-30 of this year will be an exciting time in Bowling Green, Kentucky as we will have over 10,000 Corvette enthusiasts caravaning from all over the country to celebrate the Museum, the Grand Opening of our Motorsports Park, and now the re-opening of our Skydome."
 

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Posted in another thread: Actually they just got a pleasant surprise--they were able to get the One Millionth Corvette out today. Facebook post said the construction guys saw the opportunity and just went in and got it. --Bob

13247_10151937346097441_1167830876_n.jpg
 
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Discussion Starter · #20 ·
Here is the related information from NCM re today's successful removal of the Millionth Corvette:

In an unexpected turn of events, the Millionth Corvette was resurrected from the depths of the sinkhole today.
"Initially there was no intention to bring the Millionth out, but as we got in there and saw more this morning we did feel like this might be our best chance," said Danny Daniel, President of Scott, Murphy and Daniel Construction.
Danny indicated that they pulled the car by one wheel from where it was lodged and it swung free into the cavern. They were then able to lift the car and place it to rest, upside down on the bottom of the sinkhole. Finally, the Corvette was hooked up by its two tires for final lifting out of the sinkhole, much like the process to retrieve the 1993 40th Anniversary.
"Went like a champ, we were tickled to death," added Daniel.
"The Millionth Corvette has been through a lot, but the damage at first glance seems to be less extensive than what it could have been, especially given the precarious spot the car landed," said Bob Hellmann, Facilities and Displays Manager at the Museum. "The undercarriage and frame look to be in good condition and everything else is repairable."
The Millionth Corvette was built at 2:00pm on July 2, 1992 in Bowling Green, Kentucky. Just like the first 1953 Corvettes, it bears a white exterior, red interior and is a convertible. The car was donated to the Corvette Museum by General Motors. In a press release from 1991, Jim Perkins, General Manager for Chevrolet at the time, said "We've been looking for a way to support the goals of the museum, which are to enshrine a great car and the great people who made it an American institution." This donation came two years before the museum that exists today had opened its doors.
"I couldn't afford Corvettes when I was growing up," Perkins said in a 1991 release. "Not many could. But it was enough to know it was a Chevy just as sure as the one I could afford. And that hasn't changed. There's still a little bit of Corvette lurking in every Chevy today. And there will be for a long time to come."
More than 20 years later, Perkins was right. There were and still are many great Corvettes to come. The Museum now has half of the cars recovered from the sinkhole and on display, and in a few weeks hopes to be adding four more cars for visitors to see. Construction crews will continue the stabilization of the spire and walls of the sinkhole before attempting to vacuum out the dirt from around the remaining cars.
 
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