Yantong Zhao

Halvorson & Partners PC provides structural engineering services. It specializes in high rise buildings, unique and creative designs and efficient structures, skyscrapers, long span structures and projects on challenging sites. The company was founded by Robert Halvorson in 1996 and is headquartered in Chicago, IL.

The American Society of Civil Engineers, founded in 1852, is the oldest national engineering society in America. The non-profit company is based in Reston, VA and has subsidiaries in the United States. With over 150,000 members worldwide, the organization advocates for sustainable and resilient practices to maintain and modernize the nation's infrastructure. The company also works to increase investment in infrastructure and improve engineering knowledge and competency. The society's Civil Engineering Landmark Program recognizes historically significant civil engineering projects, structures, and sites.

AISC Holdings, Inc. provides information, news, and publications related to structural steel design. The private company is based in Chicago, IL. The company's Steel Solutions Center offers technical assistance, innovative solutions, and tools for steel fabricators, structural engineers, architects, owners, developers, and other professionals.