Related Links: Busan-Geoje Link Longest Immersed Tube Tunnel Planned Immersed-tube tunnels are rare birds. Only a handful are under construction in the world each year. They consist of large tubes, constructed in sections often more than 100 meters in length, which are floated into position in a waterway, sunk into position, and joined with watertight seals. They are always placed in a trench on the bottom of the river or bay. They are constructed of steel or reinforced concrete. [Slideshow: The 10 Longest Immersed-Tube Tunnels] “While bridges are generally cheaper to build, immersed-tube tunnels are usually located at sites where
ENR File Photo McGrath (right) chats with a field engineer at a California dam project site in 1966. Related Links: Obituary for David McGrath in The Newark Star Ledger David J. "Dave" McGrath, who served as the publisher of ENR for 23 years and was one of the first American business-publishing executives to link to the China marketplace, died on Sept. 26 in Palm City, Fla. He was 86.McGrath, ENR publisher from 1965 until 1988, was also a McGraw-Hill Cos. senior vice president. Working for the firm for 38 years, McGrath began his company career in advertising sales and later
Related Links: Engineering News-Record Construction Economics Whenever anything or anyone turns 100, it's a big deal. With a base year of 1913, ENR's cost indexes have joined that category after a century of measuring construction cost fluctuations and reflecting the industry's most important trends. The use of the cost indexes has grown almost as dramatically as the indexes themselves.They captured, for example, the explosion in union wages that caused costs to jump in the 1970s, and they tracked the record hike in steel prices and its effects on overall construction costs in 2004.Over the years, ENR has labored to ensure
Related Links: ENR 2013 Third Quarterly Cost Report (subscription required) ENR Confidence Index Suffers a Small Drop A Hundred Years of ENR Cost Indexes Elsie Eaves joined ENR in 1926, five years after the magazine introduced its Construction Cost Index, but she soon made them her own. "Elsie Eaves was the one who made ENR's cost indexes the industry standard," says Ken Humphreys, the retired executive director of the American Association of Cost Engineers, of which Eaves was a founding member, in 1956. She was one of the first women to become a civil engineer and played a prominent role
Related Links: ENR's 2013 Third Quarterly Cost Report (subscription required) ENR Confidence Index Suffers a Small Drop An Appreciation: How Elsie Eaves Built ENR's Cost Indexes Whenever anything or anyone turns 100, it's a big deal. With a base year of 1913, ENR's cost indexes have joined that category after a century of measuring construction cost fluctuations and reflecting the industry's most important trends. The use of the cost indexes has grown almost as dramatically as the indexes themselves.They captured, for example, the explosion in union wages that caused costs to jump in the 1970s, and they tracked the record
RZD The work involved laying and ballasting the rail line, rebuilding a bridge and installing signalling gear. The northeast corner of North Korea, adjacent to China and Russia, is showing incipient signs of development. The Rason Special Economic Zone, where foreign investment is permitted, includes an ice-free port and offers potential as a trans-shipment point. China needs greater access to the sea to assist in moving cargo out of its landlocked northeast provinces. China leases one pier at Rason’s port to ship coal to southeast China and has offered to lease two additional piers. But Rason’s electricity grid is antiquated,
In the U.S., the Federal Aviation Administration owns, builds and operates most control towers and provides air-traffic-control services at 264 airports.In contrast, air-traffic control in some countries is privatized. For example, Nav Canada, a private non-profit corporation, has been responsible for air traffic control since 1996 in Canada, and other countries in which private air-navigation-service companies operate include Germany, Italy, Switzerland, Norway, Poland, the Ukraine and Indonesia.Air-navigation technology
Northern Ireland's first new hospital in ten years was also the first project in Northern Ireland to be built under a public-private partnership agreement.
Related Links: Haiti Fires Up Oil-Fired Power Plant Italy Turns to Oil-Fired Power Plants as Russia Trims Supply While oil plays a commanding role in global energy markets, its position as a fuel source for electric powerplants ranges from dominant in certain countries to modest or non-existent in others.Oil is mostly used by countries who have abundant supplies of it, such as the Persian Gulf countries, Russia and Venezuela. “If you don’t have to use oil, you’re not going to build oil-fired plants unless you’re sitting on it,” says Chris Bergesen, editorial director for UDI Productsat Platts—like ENR, a unit
Related Links: ENR Building News The World's Tallest Building The essential function of all tall towers is to enable broadcasters to transmit line-of-sight signals to their customers."Broadcasting is a big stick industry, where one tower can cover a whole market," according to Kelly Williams, senior director of Engineering for the National Association of Broadcasters. "You put up a tower to facilitate broadcasting wirelessly."Towers host a wide variety of antennae, which transmit over the air (analog) television signals, AM and FM radio, telco long lines (which transmit data), pager signals and emergency service channels (including two-way radio).But tower owners have long
