The Portland, Ore., Bureau of Environmental Services and Salem, Ore.-based contractor Emery & Sons Construction Inc. on a recent project needed precision to bore a new sewer line beneath two trolley tracks near an existing steam vent in downtown Portland. They turned to an up-and-coming technology: laser-guided boring. Photo Courtesy Of Emery & Sons The laser-guided boring system allows crews to precisely place materials and work in tight spaces. Using a Pella, Iowa-based Vermeer AXIS tool, the laser system provides near-exact placement of a bored tunnel and then pulls the pipe back through when complete—“a marvelous machine,” says Bill Theiss,
Fluor and Boeing have made their desire known to take over management of the government-owned, contractor-operated Dept. of Energy Sandia National Laboratory facilities in Albuquerque, N.M., and Livermore, Calif. Photo courtesy Sandia National Labs Announcing a “teaming agreement,” Irving, Texas-based Fluor and Chicago-based Boeing say they are “ready and willing to bid” to manage the DOE’s National Nuclear Security Administration facilities, if the opportunity comes up, according to Keith Stephens, Fluor spokesperson. The current Sandia contract, held by Lockheed since 1993, expires in September 2012. “We thought it important to announce our intentions,” Stephens says. “While there is not an
The complex fabrication of a $24.5-million tubular, webbed helix of red steel has set back the completion date for the Santiago Calatrava-designed footbridge in Calgary from fall 2010 to mid-June 2011. Billed as Calgary’s longest single-span structure at 126 meters—twice as long as the next longest—the Peace Bridge’s helical design keeps supports out of the water, using buried abutments on either side of the riverbank. The 6.2-m-wide bridge, double the width of other pedestrian bridges in the area, will serve 5,000 residents daily by connecting two growing neighborhoods to the city center and light rail. The city of Calgary wanted
Two major stadium renovations at Washington state universities are aiming to attract more fans to college football and boost revenue. A $250-million upgrade at the University of Washington’s Husky Stadium, Seattle, and an estimated $70-million, smaller rehab of Washington State University’s Martin Stadium in Pullman are pitting rival schools against each other in the stadium upgrade race. Rendering: Courtesy of The University of Washington Husky Stadium, first built in 1920 for the University of Washington’s football team, is set for a $250-million makeover to improve sight lines, add some capacity and correct structural deficiencies. Renovations to Husky Stadium, a 90-year-old
Skanska USA has nearly completed demolition and has begun structural work on the first major renovation in more than 60 years of the student union building at the University of Washington, Seattle. The $128-million overhaul of the 256,000-sq-ft structure will improve its functionality for a campus student population that has nearly doubled in that time to 50,000. Photo:Tom Sawyer For ENR Systems and seismic protection will be improved at student union, built in 1949. Don Kowalchuk, Skanska’s project executive, says that nearly six months of hazardous material abatement during demolition has been tricky. The five-story Husky Union Building is set
Ayear after shifting bridge bents halted work on the $217-million U.S. Route 20 project near Oregon’s coast, engineers are hoping for rain and a solution. Photo: Courtesy of ODOT Unstable soils have kept completion of an Oregon road section in limbo. While over 50% of the new 6.5-mile bypass is complete, four bridges up to 1,100 ft long sit partially constructed. Lateral load from adjacent fill and subsurface ground pressure may have caused two of the 20 bents on the 10-bridge project to shift as much as two inches. Since that discovery in February 2010, crews have been collecting data.
Preliminary work has crews already bustling on a new multibillion-dollar Intel Corp. fabrication plant in Hillsboro, Ore. While Intel has disclosed little about construction costs and project milestones, there can be no hiding a 1.3-million-sq-ft footprint for a facility set to manufacture next-generation 22-nanometer chips. Photo: Courtesy Intel Bill MacKenzie, Intel spokesman, confirms that Hoffman Construction, Portland, Ore., will manage the three-building complex—to include a semiconductor fabrication plant, emergency generator structure and process utility building—in Intel’s existing industrial park. While the buildings will have independent utilities, there also will be “interconnecting trestles, tunnels and product-handling links,” says MacKenzie. A Hoffman
A 55-in.-dia cut into a rebar-reinforced underground concrete tank with hardened nuclear waste, the largest slice ever into such a U.S. Energy Dept. storage structure, went “perfectly” on Dec. 19, says a site cleanup official. Photo: Courtesy of U.S. Energy Dept. Crew lifts an underground concrete waste tank’s plug—wrapped in protective plastic to avoid contamination spread during operation—to install a robotic waste removal arm. In what may become the norm at DOE’s Hanford site in eastern Washington state and possibly at other U.S. waste sites, crews from Boston-based AK Services used a pressurized mix of garnet and water to methodically
Canada's National Energy Board granted approval in December to the proposed Mackenzie Gas Project, which would string a natural gas pipeline from the upper-reaches of the Northwest Territories, Canada, 745 miles south into Northern Alberta. Before the $16.2-billion project can proceed, backers must put in place a funding framework. Image: Walter Konefal for ENR "Mackenzie needs to compete on a supply-cost basis with other sources of supply," says Pius Rolheiser, Calgary-based Mackenzie project spokesperson." It remains the critical challenge today to be cost- competitive with shale gas, liquefied natural gas and potential Alaska projects." While Mackenzie runs primarily south, staying
What easily could have been a run-of-the-mill sewer pipeline replacement project in Oregon went from underground to underwater—creating what participants say will be the world’s first buoyant gravity line. Photo: Brown And Caldwell Pipeline under construction in Lake Oswego, Ore., will be the world’s first buoyant-gravity line when completed next April. Now under construction, the Lake Oswego interceptor sewer boasts 17,000 ft of wastewater-carrying pipe and another 12,000 ft of attached air-filled buoyant pipe. Replacing an existing submerged concrete pile-supported pipeline built in 1963, the new system will hook to the city’s current system on both sides of the lake.
COVID-19 prevented this year’s group of national Top 20 Under 40 winners from meeting in person to share ideas for tackling key construction challenges, but the virtual voices of these visionaries came through loud and clear.