Riverpoint Center in Phoenix

The $107 million, 630,000-square-foot Riverpoint Center, completed in November 2007, provides office space for more than 6,000 workers employed by Apollo Group's corporate headquarters and online operations that support the University of Phoenix and other educational programs. Three new buildings, one 10-story and two six-story, were constructed on a 37-acre site.

Architects designed the buildings along the site's east-west axis to bring as much natural light as possible into the open office spaces. High-performance insulating glass mitigates solar heat gain and the adjacent freeway noise. In addition, "the project was required to meet a typical wind load of 23.5 pounds per square foot," says Bob Thiede, estimator, Wausau Window and Wall Systems.

"Each building fa¬ćade was designed to respond to its own exposure with deep set windows; horizontal metal shade fins were utilized on the southern exposure to control the harsh southern light," according to  the project's American Institute of Architects' Nevada entry, for which it received an Honor Award.

The developer, Apollo Development Corp., subsidiary of Apollo Group Inc., both of Phoenix, selected the design team of Carpenter Sellers Architects of Las Vegas and SmithGroup of Phoenix. Sundt Construction Inc., Tempe, Ariz., the general contractor, recommended KT Fabrication Inc., Chandler, Ariz., as glazing contractor.

Wausau Window and Wall Systems, Wausau, Wis., fabricated 186,000 square feet of window systems ranging from 4.75 inches to 8.75 inches in depth. The majority was factory-fabricated in Wisconsin as vertical silicone glazed 8750 STX curtain wall that supports sun shades, and then shipped to KT as knocked-down framing members for installation on site. Pre- assembled units also were provided for the lower levels, punched openings, vertical strip and glazed wall system, Thiede says.

Viracon, Owatonna, Minn., supplied Solarscreen 2000 low-E V6-2M, 1-inch vision glass and 0.25-inch spandrel glass and, for the first floor, Radiant low-E VRE-59 1-inch vision glass.