Retaining Wall Construction - Part 1 - Shea Concrete Products
Here is part 1 of our retaining wall construction series that shows you the basics of precast concrete retaining wall installation. Find out what steps shoul...
By: SheaConcrete
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Retaining Wall Construction - Part 1 - Shea Concrete Products - Video
granular flow behind the retaining wall
DEM simulation of granular flow behind the retaining wall.
By: Sergey Klishin
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granular flow behind the retaining wall - Video
Retaining Wall Companies Call Us At (603) 497-9549
Craig Urella has built irrigation systems, retaining walls and patios since 1988. He holds many certifications. His crew is fully insured. Urella #39;s team are ...
By: Craig Urella
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Retaining Wall Companies Call Us At (603) 497-9549 - Video
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Engineer Susan Nilson tours the South Terminal on Thursday in New Bedford. Nilson and fellow engineer Jay Borkland conducted a crane study to help them choose the right design by putting sensors in the ground under different types of cranes holding different types of equipment.PETER PEREIRA/The Standard-Times
NEW BEDFORD When finished, the retaining wall at South Terminal is expected to support almost anything, including New Bedford's economic future.
The specially engineered retaining wall is what will ensure the port facility can hold the weight required to be a hub of offshore wind staging.
"This is really what makes this project unique," engineer Jay Borkland said Thursday.
Made up of interlocking steel ovals and circles called cofferdams, the retaining wall will allow the facility to have an average weight-bearing capacity of 4,000 pounds per square foot. In some places, the facility will hold 18,000 pounds per square foot.
"You are going to have all of this weight transferring not just vertically but horizontally," Borkland said. "We needed a retaining wall that would not blow out under the pressure."
That's partially because one of the major components of South Terminal construction is backfilling an area of the harbor just north of the Gifford Street boat ramp.
Once put to use, the manufactured land will have to hold hundreds of pieces of steel weighing up to 500 tons, as well as hulking cranes to carry the turbine components. The retaining wall ensures the facility doesn't collapse under the pressure and into the harbor.
Choosing the retaining wall's design was a process steeped in calculations. Borkland and fellow engineer Susan Nilson even conducted a "crane study" to help them, putting sensors in the ground under different types of cranes holding different types of equipment.
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South Terminal retaining wall crucial to project success
Criminal Investigation into Workplace Death
Burnaby RCMP say a criminal investigation is underway into a workplace death a year-and-a-half-ago. A 28-year-old man was laying sewer pipe in a trench, when a retaining wall collapsed, crushing...
By: citytvofficial
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Criminal Investigation into Workplace Death - Video
MARUDI: A retaining wall will be built along the river at Long Wat to protect the 80-door longhouse from frequent flooding during the rainy season.
Telang Usan assemblyman Dennis Ngau said the government has allocated RM100,000 for the retaining wall, which will also protect the longhouse from soil erosion.
As we know Baram is always hit by floods. Recently the government has approved another RM100,000 and the project will done by an appointed contractor, he said during a recent site visit.
Longhouse chief Anyie Avit said although RM100,000 would not be sufficient to build the entire retaining wall, they would go ahead with the project.
The soil erosion, which is very close to the longhouse building is very dangerous as the longhouse could easily be washed away by the strong current of waters during the flood session, he said.
Dennis said he would look for more funds to add to the sum already approved, adding he had also previously handed over a minor rural project grant of RM10,000 to the longhouse.
City Hall posted traffic barriers along Royal Street in 2011 after a section of the road failed. The road was temporarily shored up at the time. The municipal government later this year plans to strengthen a stretch of retaining wall in an effort to prevent another road failure. Park Record file photo
Park City officials plan to strengthen a stretch of retaining wall on Royal Street later this year that was temporarily shored up in 2011 after failing that year.
Matt Cassel, the Park City engineer, said the project will entail approximately 400 feet of the wall. It is located approximately 1,000 feet downhill from the intersections with Golden Eagle Drive. The retaining wall is on the downhill side of the street.
The city engineer said crews will install what are known as soil nails, which are made of steel encased in concrete. They will each be up to 40 feet in length, he said. The soil nails will be driven through the retaining wall and into the earth behind the wall. One soil nail will be put approximately every seven feet, Cassel said.
He said the work is expected to add at least 20 years to that stretch of the retaining wall's lifespan. It was installed in the early 1980s, as Deer Valley was developed.
"It will be the final repair," Cassel said.
The stretch of Royal Street failed in mid-2011. Officials at the time indicated water was washing away soil underneath the road, causing the road surface to crack. The road surface started to slip downhill.
Cassel said repairs were undertaken in 2011 that were expected to last five years. Further study led officials to pursue the upcoming work, he said.
The city engineer said the work is anticipated to start shortly after Independence Day and last up to three months. Royal Street will be open at night and on weekends during the work. Cassel said City Hall plans to ensure one lane is open during work hours. Flaggers will direct traffic when just one lane is open. The project does not include roadwork.
City Hall recently published an advertisement seeking bids for the work. The bid deadline is May 29. Cassel said he anticipates the work will cost in the low seven figures. A contract of that value will require approval by the Park City Council.
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Royal Street: what are soil nails and why are they needed?
Blocks of broken concrete and clods of sodden mud collapsed on to a Dunedin driveway early yesterday, blocking vehicle access to five houses.
The affected home owners in Asquith St, Caversham, want the Dunedin City Council to deal with the issue, but the council says the wall was built by the developer of their subdivision in the 1950s, and is entirely on private property.
Residents had no vehicle access to their homes after the concrete retaining wall, which is about 60 years old, collapsed.
Resident Ken Stevens said he was woken by a ''thump'' about 6.45am.
''I got up - I thought `something's wrong','' he said.
Mr Stevens looked outside and discovered the retaining wall - and plenty of soil from the grass verge it held back - in the private driveway that services the Asquith St homes.
He said there had been a crack in the wall for about 14 years, and residents had been in discussion with the council for the past five years or so.
Property owner Mark Ford was also at the site of the slip yesterday morning. He said each property extended across the driveway to the wall.
He, and other residents at the site yesterday were strongly of the view the council had a responsibility - particularly because the soil that had dropped on to the driveway was council property.
But council transportation policy engineer Jon Visser said yesterday the driveway was ''completely'' on private property.
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Collapsed wall is on private property: DCC
Bill Ryan/The Gazette
Workers testing a retaining wall that partially collapsed at the beginning of April, in the Kentlands, near the intersection of Quince Orchard Road and Pawnee Drive, on Friday.
Nearly six weeks after a portion of the Kentlands retaining wall collapsed on a snowy Sunday afternoon, the construction process to repair the structure is still chugging along.
Neil Harris, board chairman of the Kentlands Citizen Assembly, said construction on the wall is coming along nicely, but rainy weather has caused work to extend past the original estimate of six weeks. Repairs now are expected to be completed by the first week in June.
The weather wasnt as kind as we would have hoped, he said.
A section of the wall, near the intersection of Quince Orchard Road and Pawnee Drive, collapsed abruptly at about 4:20 p.m. on March 31.
No one was injured, but two townhouses on Ridgepoint Place were evacuated and subsequently condemned by the city of Gaithersburg.
The wall, owned by the Kentlands Citizen Assembly, is made of hundreds of concrete blocks, each weighing 200 pounds, according to Gaithersburg City Manager Tony Tomasello.
Shortly after the collapse, Harris said the cause of the break was likely due to poor drainage and the association had been preparing to fix the problems before the incident. About $500,000 had been set aside for wall repairs previously, but it now looks like the total price tag will be about $200,000 to $250,000, Harris said.
Since then, significant work has been done to alleviate the drainage problems, including the addition of about two feet of a crushed gravel material to a 75-foot stretch of the wall to prevent future water buildup. Harris said the gravel will replace plywood or a similar material that was there.
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Construction continues at site of Gaithersburg retaining wall collapse -- Gazette.Net
Integrity Builders and Dirtworks Pastoral Cove Site Work - 2nd Course of blocks for retaining wall
This is a video showing the "skid steer" bringing the quarry block to the backhoe with a gripper that then sets the block down into the 2nd course. This work...
By: Tim Wilkens