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Georgia Safe Sidewalks

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ADA Requirements*

303 Changes in Level 

303.1 General.  Where changes in level are permitted in floor or ground surfaces, they shall comply with 303.  

303.2 Vertical.  Changes in level of ¼ inch (6.4 mm) high maximum shall be permitted to be vertical.   

Vertical Change in Level



303.3 Beveled.  Changes in level between ¼ inch (6.4 mm) high minimum and ½ inch (13 mm) high maximum shall be beveled with a slope not steeper than 1:2.       

303.4 Ramps.  Changes in level greater than ½ inch (13 mm) high shall be ramped, and shall comply with 405 or 406. 

Advisory 303.3 Beveled.   Changes in level exceeding ½ inch (13 mm) must comply with 405 (Ramps) or 406 (Curb Ramps). 


405 Ramps 

405.1 General.  Ramps on accessible routes shall comply with 405. 

405.2 Slope.  Ramp runs shall have a running slope not steeper than 1:12. 



Table 405.2 Maximum Ramp Slope and Rise for Existing Sites, Buildings, and Facilities 

Slope1 Maximum Rise 

Steeper than 1:10 but not steeper than 1:8 3 inches (75 mm) 

Steeper than 1:12 but not steeper than 1:10 6 inches (150 mm) 

1. A slope steeper than 1:8 is prohibited. 


*Chapter 3: Building Blocks, pages 141-142



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