A. 
Wherever a sidewalk crosses a curb, a curb ramp complying with all Americans with Disabilities Act requirements shall be installed.
B. 
The ends of the ramp shall be flush with the sidewalk at the upper end and with the street at the lower end.
C. 
The maximum slope of the ramp shall be 1:12.
D. 
The maximum slope of the side flares shall be 1:12.
E. 
Ramps shall be separated from curb and sidewalks with one-half-inch expansion material.
F. 
ADA ramps shall be constructed with pedestrian warning devices in accordance with labor and industry standards.