Wiss, Janney, Elstner Associates, Inc. – Headquarters Addition and Janney Technical Center

Northbrook, Illinois


Phased demolition of two existing buildings, and the construction of a 70,000-sf office and material testing laboratory building.  This two-story addition, which links to the firm’s main building, creates an expanded space for both administrative and technical operations.

The new state-of-the-art facility features custom chemistry, metallurgy, petrography, and concrete / mortar laboratories, and an 8,000-sf structural testing laboratory with a 20-ton Gantry crane for large-scale testing of samples. Additional spaces include a combined shipping / receiving / mail area; open workstations; private offices; beverage stations; library; and conference rooms. The addition offers exposed ceiling finishes, clerestory office fronts, millwork, and AV components throughout. The expanded lobby is highlighted by an internal, curved staircase with glass block enclosure. Move sequencing required extensive coordination of all lab equipment from former locations into the new space.

Exterior wall construction encompasses eight distinct wall systems; laboratories are build-to-suit, with two precision controlled environment rooms; and the 24-inch concrete reaction floor in the structural lab included 200 tons of reinforcing steel and 1,500 cu yds of concrete. Site work includes installation of a Storm-Tech water retention system under the new parking lot and added landscaping.


FGM Architects


C.E. Anderson & Associates


  • Preconstruction
  • General Contracting with Self-performed Work


Duration: 24 months