Consulting Specifying Engineer April 2014-CSE : Page-11

The 37,000-seat Marlins Park (home to Miami’s major league baseball team) features both a retractable roof and energy-efficient design. The M-E Engineers project achieved LEED Gold certification. Courtesy: M-E Engineers, Christy Radecic photographer Memorial Stadium expansion. The Ath-lete Performance Lab represents a new model in athletics research and sports science, combining athletics, academics, and private sector research in focused collaboration to improve athletic perfor-mance. The APL has two primary levels. The Dynamic Level of APL is where the majority of the physical testing of athletes occurs. The Dynamic Level includes the following: n 162 x 4-ft turf track n 70 x 30 x 11-ft batting cage for base-ball, softball, and golf n Cardio area n Power lifting racks and a retractable throws cage for track and field throw-ing activities n Half-court basketball court for bas-ketball, volleyball, and other hard court activities n Various arrays of force plates located within a raised floor system used for athletic testing. The Collaborative Level is located directly above the Dynamic Level. It includes: n A lab complete with instrumentation and testing equipment to support urine, blood, and saliva testing n Treatment rooms for blood draws and other testing procedures www.csemag.com n A dedicated room for a bone density scanner n Office spaces for researchers n Collaboration spaces. Jeff Sawarynski: We are currently working on the new Las Vegas Arena for MGM and AEG in Las Vegas, Nev. It’s a 20,000-seat venue programmed to NBA and NHL standards, and it has a focus on shows and concerts. CSE: How have the characteristics of such projects changed in recent years, and what should engineers expect to see in the near future? Evans: Venues are increasing in size to accommodate larger occupant loads. Smoke management systems are being incorporated into the facilities to allow these larger occupant loads and limit aisle width increases (Smoke Protected Assembly Seating). Over the past 10 to 15 years, theaters on the Las Vegas Strip have been constructed so the performance can surround the audience. Although this provides a more intimate experience, it makes it difficult to incorporate the level of protection provided by a proscenium. This inevitably requires using the alter-nate methods and materials provisions of the International Building Code to devel-op a performance-based fire protection approach to provide equivalency. Sawarynski: We see new venues designed for specific leagues, such as Major League Soccer; specific uses, such as the College World Series Stadium in Omaha; and for mixed entertainment when no team is in place, such as Sprint Center in Kansas City. While venues are being built for diverse reasons, the com-mon theme is that they are programmed and designed as multi-use venues. Today’s cost models require these venues be flex-ible and serve many purposes. Engineers need to understand how these varying uses affect system sizing, part load operation, and flexibility for growth and change. Atienza: Sporting facilities like sta-diums and arenas are very challenging when it comes to energy efficiency. These facilities have a very large carbon footprint that requires tons of steel and concrete to construct. These types of facilities require very large quantities of water to serve restrooms, showers, con-cessions stands, landscaping, and playing fields. Recreational facilities generally require large volumes of spaces to house indoor swimming pools and basketball courts, which results in very large heat-ing and cooling loads. U.S. Green Build-ing Council’s LEED is changing the way we think about how our buildings 11 Consulting-Specifying Engineer • APRIL 2014

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