The roundabout, a circular intersection in which traffic flows through from incoming streets in one direction around a central island, is booming in the U.S.—so much so that some engineering firms see it as a straight-up opportunity.
One of the four teams contending for the estimated $5-billion Tappan Zee Bridge replacement project in New York state chose not to submit a bid at the last moment, forfeiting a $2.5-million stipend paid for bid submissions.
Driven by steady ridership growth, Dallas Area Rapid Transit is on a roll, using alternative project delivery methods and composite materials as it expands its light-rail system and upgrades its commuter rail.
The 315-mile-long Hudson River, which flows in the eastern part of New York state from high in the Adirondack Mountains down to the Battery in New York Harbor, has always been a pivotal waterway in the U.S.—for business and pleasure.
Polychlorinated biphenyls (PCBs), a group of 209 chemicals that have very good thermal and electrical insulating properties, were widely used in industrial applications for decades beginning in 1929, when they were first commercially produced under the Aroclor trade name.
Courtesy of PANYNJ Rendering of 408-ft-tall spire of future tallest building in the Western Hemisphere shows no cladding. Courtesy of PANYNJ Older rendering shows a spire with a wrapping, as designed by SOM. The future 408-ft-tall spire of the under-construction One World Trade Center has officially lost its cladding. On Aug. 7, the developers—the Port Authority of New York & New Jersey and the Durst Organization—issued 13 new renderings of the 3-million-sq-ft project, which is planned at a height of 1,776 ft. It is touted as the future tallest building in the Western Hemisphere.News broke about the design change several
Data centers have rows of racks that contain servers and other IT equipment that exhausts high heat. The fronts of opposite rows face each other across a cold aisle.
A design guide for three short-span, heavy-load bridge applications using patented recycled-plastic components is now available, reflecting what officials say is an acceleration of industry interest in the material.
After seven days of preparations, the implosion, which went off without a hitch and left adjacent structures undamaged, took only seven seconds. Courtesy of CDI Completed in 1986, the Radio Network House posed a challenge because its concrete structure was heavily reinforced to accommodate seismic loads.
The blackout that swept through the northern and eastern regions of India on July 30 and 31 demonstrated the huge gap between growing demand for electricity and supply as well as political tensions between the state and central governments.
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