Features
By Robert L. Reid
An engineering-led design process created the slender structure of the 165 m tall Singapore Flyer, currently the largest observation wheel in the world. The Flyer’s innovative design features a two-dimensional rim truss structure and an alternating arrangement of spoke cables that counter the potential for radial and lateral translational buckling as well as torsional buckling.
By Brad Montgomery, P.E., M.ASCE
The recently completed Eastern Regional Water Reclamation Facility, in northern Kentucky, sets a new performance standard in the state for small wastewater facilities. In addition to offering advanced treatment technologies, the 4 mgd (15,140 m³/d) plant has improved the prospects for economic growth in the area.
By Thomas A. Fisher, P.E., M.ASCE, Rama Krishnagiri, P.E., Tam L. Sillick, P.E., and George R. Kuhn
It is difficult enough to design and construct a major overhaul of a nine-span bascule crossing of a navigable waterway that will extend the structure’s service life by 25 years. But designing the retrofit so that the construction would keep traffic flowing most of the time and simultaneously minimize the effects on nearby businesses, wildlife, and shipping operations required extraordinary feats of engineering ingenuity.
By Larry Bell, A.M.ASCE
Pneumatic membrane structures originally designed for use in space provide rapidly and easily deployable large-volume enclosures that can be used on Earth as well, especially in harsh climates or in the aftermath of disasters.
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