William R. Nash

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.

American Society for Testing & Materials provides information infrastructure services. The firm develops voluntary codes & regulations for technical materials, products, systems and services. It offers services in areas such as petroleum, medical devices, consumer products and environmental assessment. The company was founded in 1898 and is headquartered in West Conshohocken, PA.

The Construction Specifications Institute, Inc. operates membership organization for understanding of construction risks. It specializes in education, certification (CDT, CCS, CCCA, CCPR), developing standards, formats (MasterFormat, UniFormat, OmniClass), networking for architects, specifiers and product representatives. The company was founded in March 1948 and is headquartered in Alexandria, VA.

Whitlock Dalrymple Poston & Associates, Inc. engages in the provision of structural, architectural, and geotechnical engineering. It performs construction inspections and material testing services. The company was founded in 1995 and is headquartered in Manassas, VA.