Steel in the News
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Posted by Scott Melnick on November 2, 2007 at 4:23 PM.
For those of you who haven’t seen a staggered truss project up close, AISC has set a camera up in the middle of Chicago to film the new Staybridge Suites project as it emerges from the ground (visit www.aisc.org/staybridge to view the webcam). AISC’s interest in the project started about five years ago when the Steel Solutions Center was asked to complete a conceptual solution showing how the hotel could be economically built in steel.
The 17-story luxury hotel — Chicago’s first staggered truss project — was designed by Valerio DeWalt Train and Structural Affiliates International. And the fabricator/erector is AISC-member K & K Iron Works.
So what’s a staggered truss system anyway? The system was first developed by Bill LeMessurier back in the 1960s and was pretty popular on the East coast but is now spreading throughout the country. Essentially, staggered truss structural steel framing is a story-high truss system that spans the entire width of the building with the trusses staggered from floor-to-floor. The system works in harmony with precast concrete plank, which is a light, dry, all-weather system. The benefits of staggered truss include more column-free space for design freedom, semi-finished floor and ceiling in one operation, lower foundation costs and seismic loads, as well as quicker erection and completion.
Have fun checking out the webcam. And if you know of other interesting steel-related webcams, be sure to visit the MSC reader feedback section and post the URL.