This is the TRAINING website.
For current info please visit detroitmi.gov
Following is a link to a website that outlines ADA Accessibility Guidelines: http://www.access-board.gov/guidelines-and-standards/buildings-and-sites/about-the-ada-standards/background/adaag
Sections 4.3, 4.7, and 4.8 pertain to sidewalks and sidewalk curb ramps.
Sidewalk Ramp and Detectable Warning Details R-28-I with City of Detroit Thickness Amendment. Details specified on this plan apply to all construction, reconstruction, or alteration