Size

35,000 SF

Services Provided

Structural, Construction Administration

New Homeland Security Training Center

KJWW provided structural engineering services and construction administration for the new Homeland Security Training Center at the College of DuPage. The new facility includes a state-of-the-art indoor firing range and a call center training lab. This facility is Phase II in the completion of the College’s Homeland Security Training Institute.

The firing range measures 100 feet by 50 yards and features 24 target positions, running man targets, and a simulator to replicate a variety of scenarios for both proximity and tactical training. Squad cars can be driven into the range to teach police cadets how to properly and safely approach suspects and vehicles.

The new facility also contains several multi-purpose classrooms and a call center training room for employees working at dispatch centers.

Challenges facing the structural design team included 100’ long span structure above firing range capable of supporting a heavy ballistics ceiling; fully below grade or partially below grade walls that needed to be aesthetically pleasing when exposed; getting mechanical systems fed into the various spaces and achieving the outdoor air requirements; long lead on precast items; and internal drainage at low end of the firing range

Solutions to the challenges included precast double tees; precast wall panels designed for soil loads and given an architectural reveal pattern; and an underground plenum within the firing range to provide supply air. Coordination with the precaster was required in order to achieve the large penetrations through the wall panels. In some conditions, structural steel needed to be added to provide backup structure around the louvers.

All disciplines needed to have major decisions made to identify large openings and/or loads applied to the precast items. The addition of a cast-in-place wall between the two tee flanges allowed for lateral load transfer to the end wall of the range.