The Americans with Disabilities Act (ADA), passed in 1990, had sweeping consequences for all persons with disabilities as well as all those in the building and construction industries, especially architects. In 2015, its 25th anniversary was commemorated with special events in cities and states across the USA.

Yet despite the ADA’s widespread impact on the built environment, few schools of architecture have full-time design studio faculty with disabilities to teach their students about accessibility first-hand. I am most fortunate to teach at one of those schools and to have had Carl Lewis as a longtime colleague at the University of Illinois at Urbana-Champaign. We have known each other ever since he first enrolled in my graduate seminar, and our friendship spans well over a quarter century, just like the ADA.

The milestone anniversary of the ADA, my ongoing research on diversity, personal experiences with family members with disabilities, and numerous occasions reviewing students’ design studio projects alongside Carl prompted me to interview him and to share his expertise with ArchDaily readers.