Steel in the News
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Posted by Tom Klemens on July 15, 2011 at 1:11 PM.
This 170-ft-long horizontal truss was hoisted into position overnight on June 28-29 at Iowa State University’s Jack Trice Stadium. It will support an HD video screen measuring 88 ft from corner to corner, making it one of the largest in college sports. Photo: Erik Raker (Click photo to see video coverage of the lift.)
A huge new steel truss will support the new scoreboard being installed on the north end of Iowa State University’s Jack Trice Stadium. The new scoreboard straddles the existing three-story Jacobsen Athletic Building. The steel truss was assembled on the ground starting in early June, while the tower legs were also put into place. The truss was hoisted into place overnight on June 28-29.
AISC member Northwest Steel Erection, Grimes, Iowa, did the erection which included one big lift once the truss was completely assembled. To handle the roughly 180-ton pick required one 600-ton crane and another 550-ton crane. The two-hour lift began about 11 p.m. on Tuesday night, June 28, and by 1 a.m. the truss was being lowered onto the towers.
AISC member H&R Steel Detailing, Kearney, Mo., also was involved in the project, as were AISC professional member Erik Raker, P.E., of Raker Rhodes Engineering LLC, Des Moines, Iowa; the project management team from Construction Products Distributors (a Weitz company), Des Moines, Iowa; and Daktronics, Brookings, S.D.
To see a 2-1/2 minute new clip about the lift from the local TV station, KCCI, click here.
Watch a time lapse video of the lift that highlights the crane operators’ great coordination on the Iowa State Cyclones’ website by clicking here. Be sure to notice the do-si-do-like maneuver as they swing the truss to clear the booms.
To watch the ongoing construction via the ISU stadium live webcam, click here. From the Stadium Scoreboard Webcam page, you can also select archival photos, taken at noon each day, and follow the construction day to day. (The first tower went up about June 1, for example, and just yesterday they started mounting the video display panels.)