United States Army Corps of Engineers | Royal Engineers | Institute of Electrical and Electronics Engineers | American Society of Civil Engineers | Corps of Engineers | Institution of Civil Engineers | Institution of Mechanical Engineers | Royal Electrical and Mechanical Engineers | Institute of Radio Engineers | American Institute of Chemical Engineers | Society of Manufacturing Engineers | Presidential Early Career Award for Scientists and Engineers | National Society of Black Engineers | Engineers Without Borders | Western Society of Engineers | Society of American Military Engineers | Royal Australian Engineers | Institute of Electronics, Information and Communication Engineers | Associated Society of Locomotive Engineers and Firemen | American Society of Agricultural and Biological Engineers | Society of Women Engineers | Society of Petroleum Engineers | Professional Engineers Ontario | National Society of Professional Engineers | Institution of Electronics and Telecommunication Engineers | Glasgow South Western Railway Engineers' Department | Engineers Club of Dayton | Engineers Australia | Bermuda Volunteer Engineers | American Institute of Mining, Metallurgical, and Petroleum Engineers |
One Allen Center employs a composite stub-girder steel frame floor system, originally developed in part by Joseph Colaco then of Ellisor Engineers Inc., currently of CBM Engineers, Inc..