John Hennessy III,
P.E.
Engineering wind-resilient structures and spaces is a complicated endeavor that relies on both human ingenuity and science. Projects must also mesh with other environmental factors, including falling snow and ice, snow loads and solar conditions. Consulting firms tap detailed climatological data, local wind data and more to grasp how wind affects a structure in a particular spot. But that’s only a start.
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ASCE brought sustainability and resilience experts from around the world to the 2017 International Conference on Sustainable Infrastructure in New York City to discuss how civil engineers can play a vital role in shaping the future of our world.
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This video presents some frequently asked civil engineering interview questions along with answers. We have compiled 18 such questions to help you prepare for civil engineering interviews. –Civil Engineering on YouTube
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Since early 2016, a new 3,600-ton capacity geothermal system has been providing cooling for the entire terminal building at the Nashville International Airport, significantly reducing the facility’s use of both electricity and water. The nearly $10.4 million project finished three months ahead of schedule and under budget.
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In a creative blend of old and new, the fabled Steinway Hall on New York’s West 57th Street will soon begin a new career, its atrium serving as the elegant main entry for a supertall high-rise now under construction on the adjacent site. Featuring progressively greater setbacks on its northern face for a feathered rather than stepped profile, the new 1,428- foot tower’s glass curtain walls will offer unparalleled views of Central Park to the north and the Manhattan skyline to the south. Hearking back to the quality and detail of historic New York towers, the shear walls on the east and west are being clad with a custom-cast terra cotta, bronze filigree and glass façade.
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Major restoration of this historic five-span arch bridge over the Mississippi River would normally require a two-year closure, yet the span was reopened to traffic after just 116 days. With the renowned 1923-era Minneapolis landmark needing extensive structural rehabilitation, the project team designed and fabricated numerous bridge elements and systems, including deck panels, rail panels, cap beams, and ornamental railing panels, prior to closing the bridge to traffic. The design also included polished stainless steel plates embedded in the underside of the precast deck panels to reduce the number of needed expansion joints. The project is a model for reconstructing a bridge within a short time frame.
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A colossal 90-inch water transmission main was completely relocated to accommodate the rebuilding of the Jane Addams Memorial Tollway, while incredibly maintaining water service to 500,000 residents. The project team designed, tested, and constructed a unique thrust restraining system to absorb the massive forces generated by the risky hot tap procedure—where two pipes are connected without emptying pipe contents. The system safely absorbed the high pressure force when water was diverted into the bypass section. It allowed a critical water supply to be preserved, the construction schedule to be reduced by a year, and renovation of the Tollway to proceed.
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Despite a never-ending legislative to-do list, regulatory reform and the nation’s crumbling infrastructure are emerging as key policy priorities for Congress and the new presidential administration. In an exclusive interview with Engineering Inc., Sen. John Barrasso, R-Wyo., discussed his vision for infrastructure investment, regulatory reforms and energy legislation. “I am working with the new administration to address our infrastructure priorities and find fiscally responsible ways to start building,” says Barrasso, chairman of the Environment and Public Works Committee.
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One of Chicago’s most noted traffic bottlenecks has been transformed into a smooth-flowing multi-tiered interchange that is also helping spur development of the nearby Chicago Manufacturing Campus. Each day, more than 38,000 vehicles, 50 freight trains and 41 passenger trains used the intersection, creating a crowded logjam. Further complicating the project was its close proximity to an automotive assembly plant, a railroad mixing yard, a residential area, and protected marsh area. The project realigned roadways and added six new bridges, including a 4.75-million-pound steel railroad truss bridge assembled in a nearby staging area then transported in just four hours to its permanent location.
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Innovative upgrades helped double this waste water plant’s wet-weather processing capacity to 720 million gallons per day, while increasing sediment and grit removal to 92 percent and reducing odor. To reduce discharges into the East River, the project team utilized advanced 4D modeling technology to deliver four new treatment components— totaling $1.3 billion—and inspected the interiors of eight, 140-foot-high egg-shaped anaerobic digesters that sit atop the plant. They also implemented a biogas program that is expected to heat nearly 5,200 homes and reduce annual greenhouse gas emissions by more than 90,000 metric tons by the end of this year.
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