People/firms

Bruce E. Grewcock has been named CEO of Peter Kiewit Sons' Inc., Omaha, Neb. The 22-year Kiewit veteran succeeds chairman Kenneth E. Stinson.

San Diego-based retail and hospitality architect Graham Downes Architecture has acquired HCA Architects, Las Vegas. HCA focuses on large-scale public, government, and institutional work.

Raymond F. Kogan, former strategic planning director for Dewberry, Washington, D.C., has formed management consultant Kogan & Co.

Milwaukee-based developer Irgens Development Partners has hired Gary S. Kautzer as VP of development.

Callison, Seattle, has named Robert Green design director of the firm's corporate and interior design practices.

Ralph Wiser, VP of healthcare with Anderson Mikos Architects, Oak Brook, Ill., has been elected to the firm's board of directors.

Seattle-based electrical engineer Sparling has named Eric Overton president and Arne Berger VP and CFO.

Morris Architects, Houston, has named Helene Little director of development of the firm's healthcare studio.