Affiliations American Institute of Timber Construction (AITC) National Society of Professional Engineers (NSPE) American Institute of Steel Construction (AISC) Prestress Concrete Institute (PCI) Construction Specifications Institute (CSI) Construction Management Association of America (CMAA) The Masonry Society (TMS) American Consulting Engineers Council (ACEC) American Concrete Institute (ACI) International Conference of Building Officials (ICBO) American Society of Civil Engineers (ASCE) North Dakota Society of Professional Engineers (NDSPE) Council of American Structural Engineers (CASE) ABOUT US | PORTFOLIO | STAFF | AFFILIATIONS | TECHNOLOGY | STANDARDS CONTACT US | HOME Copyright © 2002 Heyer Engineering Development by Ecliptic Technologies, Inc.