Accessibility is more than one ramp
Accessible routes can involve curb ramps, sidewalks, landings, parking interfaces and transitions between surfaces. A change in one area can affect the slope or elevation of the next, so the route should be reviewed as a connected system.
Existing sites can be more complex
Retrofit work must fit around grades, drainage, entrances and pavement that are already in place. That can make elevation control and tie-ins especially important during demolition and replacement.
Plans and field conditions both matter
Project drawings define the intended design, while existing elevations determine how the work meets the real site. Commercial accessibility improvements are best planned with accurate layout information and clear coordination among the responsible project parties.
Parking and pedestrian areas connect
Accessible spaces, access aisles, curb transitions and walks often meet in a small area. Concrete work should be coordinated with markings, signage and other project requirements so the completed route works as designed.