Podcast:99% Invisible Published On: Tue Jul 08 2014 Description: When designing a commercial structure, there is one safety component that must be designed right into the building from the start: egress. “Egress” refers to an entire exit system from a building: stairs, corridors, and evacuation routes outside the building. Each state’s building … Continue reading → Subscribe to SiriusXM Podcasts+ on Apple Podcasts to listen to ad-free new episodes and get exclusive access to bonus content.