SureWall Retaining Wall Systems
SureWall Retaining Wall Post Systems provide a simple and easy solution for creating solid timber retaining walls and sleeper edging. Heavy Duty Galvanised...
By: Natasha Hull
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SureWall Retaining Wall Systems - Video
Geotechnical-Factor of Safety Against Sliding on Retaining Wall
A great geotechnical question that could be found on the civil PE exam. A retaining wall is setup and you are to find the factor of safety against sliding. C...
By: Civil Engineering Academy
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Geotechnical-Factor of Safety Against Sliding on Retaining Wall - Video
Traveling from South of Market, past Moscone Convention Center and to the far end of Union Square on Saturday morning was an other-worldly experience: no cars, no stores, no tall buildings, no crowded sidewalks, no panhandlers.
Everything was gray. And noisy - a loud constant buzz bordering on a roar mixed with the incessant metallic hammering sound interspersed with occasional beeps. Even the weather was odd. It was warm and humid, yet dry. Still, the pavement underfoot was covered in a sticky layer of mud.
This trip, seemingly out of a science fiction novel, was a tour of the under-construction northbound bore of the Central Subway - the Municipal Transportation Agency's $1.6 billion transit link between the Caltrain station and Chinatown.
The line will stretch 1.7 miles, with a twin-bore tunnel going underground where Interstate 80 crosses Fourth Street. An above-ground station will be built at Fourth and Brannan streets with subterranean stations near Moscone Center at Fourth and Folsom streets, at Union Square and in Chinatown at Stockton and Washington streets, where the tracks will end.
But the tunnel will extend to Powell Street and Columbus Avenue, the site of the old Pagoda Palace Theater in North Beach, where the two tunnel-boring machines will be plucked from the ground and an extension might someday be built.
For now, the two machines - each longer than a football field and weighing 750 tons - are steadily and surreptitiously gnawing 20-foot wide tunnels beneath one of the most-congested parts of the city. Tunneling crews work five days a week, 12 hours a day, with maintenance work taking place when they're not digging.
Mom Chung, the machine named for the nation's first American-born female Chinese physician, got a head start in July and is now at Stockton and Clay streets in Chinatown. Big Alma, dedicated to socialite and philanthropist Alma de Bretteville Spreckels, started work in November and has made it past Union Square. She's now sitting beneath the Nike store.
Mike Sinon, safety manager for contractor Barnard Impreglio Healy, said it's a tradition as well as a safety precaution to name the tunneling machines - usually after women.
"It's bad juju to not name tunnel-boring machines," he said. "It's done all over the world."
So far, it seems to be working. John Funghi, the MTA's Central Subway project manager, said the work has been imperceptible on the surface, even when passing beneath some of the city's busiest areas, such as Fourth and Market streets, where the boring machines had to dig beneath Old Navy and Forever 21.
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Machines quietly tunneling in Muni's Central Subway project
by KHOU.com staff
khou.com
Posted on March 8, 2014 at 1:35 PM
Updated yesterday at 1:35 PM
HOUSTON A man is in serious condition after he hit the retaining wall on the freeway, flipped and was thrown from his car early Saturday in east Houston, according to DPS.
According to the State Troopers, the accident happened around midnight on the East Freeway and the East Sam Houston Parkway. The driver was heading west on the freeway when he lost control of the vehicle and struck the inside retaining wall, causing the car to roll several times.
He was transported to Ben Taub Hospital in serious but stable condition, DPS said.
This caused a major headache for driversthe freeway was shut down for about two hours.
State police say they are checking to see if alcohol was involved.
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DPS: Man hospitalized after rollover accident on East Freeway
Retaining Wall Montage
Retaining Wall Montage http://goo.gl/Y7Hra5 - More Information! http://www.Stonemakers.net - Check Out Our Site! http://www.facebook.com/stonemakersacademy S...
By: StoneMakers
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Retaining Wall Montage - Video
Winter 2013 - Retaining Wall Back-filled with Dirt
By: Joe Salvemini
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Winter 2013 - Retaining Wall Back-filled with Dirt - Video
1970s Zambia, Railway Construction, Building Huge Retaining Wall, Chinese and African Workers
From the Kinolibrary archive film collections. To order the clip clean and high res or to find out more visit http://www.kinolibrary.com. Clip ref AB69 1970s...
By: thekinolibrary
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1970s Zambia, Railway Construction, Building Huge Retaining Wall, Chinese and African Workers - Video
Kingston, TN -
The Tennessee Valley Authority has completed an earthquake-resistant, underground retaining wall around the containment cell at the recovery site of the ash spill at the Kingston Fossil Plant.
The wall completely surrounds the 240-acre containment cell where recovered ash will be permanently stored.
Construction of the wall began in summer 2011 and was finished February 20th, almost a month ahead of schedule.
It is the largest wall of its kind in the U.S. at nearly 64,000 linear feet, the equivalent of 12 miles, and is designed to withstand a magnitude 6.0 earthquake.
The project team is now focused on completing installation of the cap and cover over the reinforced containment cell. The project remains under budget and on schedule to be completed by the end of this year.
In addition, TVA is restoring and enhancing the Swan Pond area by installing several recreational features, performing shoreline stabilization, constructing wetlands and planting a variety of native plants and trees. When this work is completed in spring 2015, there will be more than 3 miles of paved walking trails, fishing piers and docks, a pedestrian bridge and boat ramp, and wildlife habitat areas for the public to enjoy.
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TVA completes retaining wall at Kingston Recovery Site
Houston, TX (PRWEB) March 05, 2014
New Englands Shea Concrete Products made a splash in the Lone Star State with a very successful showing at the 2014 Precast Show. The National Precast Concrete Association (NPCA) named it winner of the Sustainability Award and also awarded it third place for Above Ground Precast in the Creative Use of Precast category.
We are very excited to win the Sustainability Award, said Manager Greg Stratis. Shea is very conscious of the environment and has incorporated other methods to be sustainable. They include recycling water from wash out and coring and recycling cardboard & paper, and installing high-efficiency lighting fixtures for the production plant.
The installation of a $1.4 million solar panel system for its Amesbury, MA production plant gives Shea the ability to operate under environmentally-friendly conditions, as solar panels are free of emitting harmful greenhouse gases. Beaumont Solar Company designed, engineered, and installed the solar panels that went live in August 2013.
These panels, which are American Recovery and Reinvestment Act (ARRA)-compliant, harvest an output that is on average 7% better than other panels annually and 20% more productive over the 25-year life of the system," said Beaumont Solar President and CEO Phil Cavallo.
The panels are a topic of conversation with other precasters, vendors and the local area. So many people are curious and amazed that we can run net-zero. It makes you feel proud, said Stratis.
Shea showcased its diverse concrete products in its Above Ground Precast honor. A Newport, RI seawall project alongside Ocean Avenue required specially-designed retaining wall blocks that Shea manufactured. The project focused on replacing a 300-foot failing retaining wall that was originally built in the 1930s. Of the 14 design proposals, Sheas team of Mello Construction Company, Contech Engineered Solutions, and Gary K. Munkelt & Associates separated itself as the only one to offer a complete seawall replacement.
The project was funded by the Federal Highway Administration and the Rhode Island Department of Transportation served as the liaison. This meant Sheas team of designers, engineers, and producers needed to follow all standards at the state and federal levels. The Ocean Avenue project was completed just in time for Tropical Storm Irene in August 2011 and Hurricane Sandy in 2012.
Shea Concrete Products is capable of manufacturing a large variety of products to meet all kinds of project specifications, Stratis said. Also, if there is an application to use or substitute precast and we currently do not make that product, then we are very open minded.
Shea manufactured the ReCon wet-cast modular retaining wall blocks that were specially-designed to withstand exposure to saltwater and provide a service life of about 75 years. Block dimensions run 48 long by 16 high and 60 in depth. The top block weighs a hefty 5,800 pounds to preserve the walls top against powerful waves.
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Shea Concrete Products Takes Home Hardware at the 2014 Precast Show
SAN DIEGO - A retaining wall in the Golden Hill area may be on the verge collapsing, and a local building inspector says he received no response from the city when he notified them of the problem.
Resident Jessica McGrevin walks past the wall on C and 28th streets twice a day. She told 10News, "It kind of looks like it's just going to fall off. It's a little intimidating to walk by."
It was hard to capture with a camera exactly how much the wall is leaning, but it was enough to catch the attention of building inspector Erhard Gajewski as he drove by.
Gajewski said, "There's potential for this wall to come down."
Gajewski told 10News there's no way to tell when the wall could collapse, but he didn't even want to stand next to it while he talked to reporter Itica Milanes.
"I don't want to be too close to it. Well, who knows when it's going to go," he added.
Gajewski said he called the city of San Diego's Code Enforcement to put it on their radar, but he hasn't heard back from anyone.
10News called and spoke with a Code Enforcement officer, who said he came out and took pictures of the wall Wednesday. The officer described the wall as very alarming and scary but doesn't think it's going to collapse right away. He did promise to have an engineer come check it out.
The Code Enforcement officer said he'll contact the property owner and send them a notice to have the wall repaired immediately.