Photo by Cathleen McGuigan for Architectural Record The crane atop One57, the rising $1.5 billion residential tower opposite Carnegie Hall, has fallen over in the winds of Hurricane Sandy. Related Links: Partially Collapsed Crane at NYC 'Billionaire's Haven' ENR.com Storm Updates The superstructure of a 1,000-ft-tall tower crane working in Midtown Manhattan left dangling from Hurricane Sandy is at risk of falling down into the streets, says one crane expert watching the event unfold from afar.Terry McGettigan, a tower crane expert in Seattle with 36 years of operating, maintenance and inspection experience, told ENR in a phone interview that the
Photo by Tony Illia for ENR Aaron Valencic, vice president of sales for Dust Control Technology, demonstrated the company's largest model at MINExpo. Related Links: At MINExpo, Iron Is Hot Despite Cooling Commodities Download ENR's Free Mobile News App Today! Controlling Dust on Road Crews' Daily Grind Dust control can be a costly and time consuming task, requiring large amounts of water, manpower and horsepower. However, a new mega-sized air-and-water cannon may soon make dust less of a drain on resources.Last month, Peoria, Ill.-based Dust Control Technology unveiled the company's biggest DustBoss machine yet during the MINExpo show in Las
For the fifth year in a row, Hino ranks highest in customer satisfaction for medium-duty trucks. Related Links: Truck Quality Suffers From Cleaner Diesels Read the J.D. Power Study Professionals using Class 5-7 work trucks are finding increased reliability from their engine and fuel systems, according to a new survey from J.D. Power and Associates. However, when breakdowns occur, they are more prolonged than before.Compared to other diesel emission controls, selective-catalytic reduction technology, which injects urea into the exhaust stream to neutralize tailpipe pollution, is preferred among these truck owners, the study notes. Overall
This week we look at a curb-pouring machine from Power Curbers that does not need a stringline and a handheld GNSS receiver from Topcon that needs no cables. Click to begin the slide show.
Photo courtesy of Caterpillar Inc. Cat's new hybrid excavator generated more than 300 patents. Related Links: At MINExpo, Iron Is Hot Despite Cooling Commodities Around the Block: Caterpillar D7E Seeking to deliver greater fuel efficiency in its line of earthmoving machines, Caterpillar Inc. has unveiled its first hybrid excavator, the 336E-H. The technology will pay back in as little as one year, the company says.With an operating weight of approximately 40 tons, the excavator cuts fuel consumption by 25% over its non-hybrid counterpart, the standard 336E, and 33% over the outgoing model, the 336D, Cat says. Measured in tons of
Photo courtesy of Link-Belt Link-Belt is switching to Cummins engines to meet federal Tier 4 diesel emissions regulations. Related Links: CBQ: Why Contractors Are Renting Rather Than Buying Three Ways Suppliers Will Meet Tier-4 Standards A federal rule that requires off-road suppliers to curb diesel emissions through 2015 is suffocating innovation by diverting valuable research and development dollars, experts say."It has been a drain on resources," admitted Chuck Martz, chairman and president of Link-Belt Construction Equipment Co. Martz spoke with ENR last month at the firm's global headquarters and factory in Lexington, Ky. "A lot of energy and effort has
Related Links: Studio Build Program at Auburn University's Center for Construction Innovation and Collaboration Engineering Community's Licensing Debate a Lesson in Degrees of Separation Washington Subcontractor Leads State Push on STEM Tennesee Geotechnical Engineer Reclaims More than Riverbanks Engineering Academies' First High-School Grads The workers on the Birmingham, Ala., high-rise jobsite weren't sure what to make of the two college kids who turned up with a ton of questions. "At first, groups of end users are wondering what the hell you are doing with them," said Nickolas Madsen. "Then you show them the sketches, and they get it."When he walked
Illustration courtesy of MIT/Mehdi Akbarian Pavement deflection produces the effect of a car rolling uphill, hurting fuel economy. Related Links: Concrete Goes To College Download MIT's Pavement Report Fuel economy has been largely the province of automakers and government initiatives, such as Corporate Average Fuel Economy standards. However, scientists at the Massachusetts Institute of Technology are looking at ways to boost fuel efficiency and cut greenhouse- gas emissions by building better roads.Pavement design can play an important role in fuel economy, researchers say. "The understanding has always been that roughness matters more than deflection" when it comes to fuel usage,
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