• There are specific requirements for ramps for the disabled.Indeed/Photodisc/Getty Images
  
  All states, including Michigan, are required to follow handicap ramp specifications outlined in the American Disabilities Act of 1990 (the Act). The Act contains guidelines on how to construct ramps to assure safe access for the handicapped and disabled.
  
  

Slope and Rise

• The least possible slope must be used for any ramp, pursuant to Section 4.8.2 of the Act. The maximum slope allowed under the Act is 1:12, according to United States Access Board. Cross slopes of ramp surfaces must not exceed 1:50, pursuant to Section 4.8.6.
  
  

Clear Width

• The minimum clear width for a handicap ramp allowed by the Act is 36 inches, pursuant to Section 4.8.3, according to United States Access Board.
  
  

Landings

• Ramps are required to have level landings at the bottom and top of each ramp and ramp run. The landing must be at least as wide as the ramp run leading to it, pursuant to Section 4.8.4. The ramp must be at least 60 inches in length, according to United States Access Board.
  
  

Handrails

• Slopes with a rise greater than 6 inches or a horizontal projection more than 72 inches must have handrails on both sides, pursuant to Section 4.8.5, according to United States Access Board. Curb ramps or ramps adjacent to seating in assembly areas are not required to have handrails.
  
  Handrails should be along both sides of ramp segments. Inside handrails must be continuous. However, if handrails are not continuous, they must extend at least 12 inches beyond the top and bottom of the ramp segment. Handrails must be parallel with the ground surface. There must be at least 1-½ inches between the wall and the handrail.
  
  Handrail gripping surfaces must be continuous and must be mounted between 34 inches and 38 inches above the ramp surfaces. The ends of handrails must be either rounded or returned smoothly to floor, wall, or post. Rotating fittings are not allowed on handrails for handicap ramps.
  
  

Edge Protection

• Ramps and landings with drop-offs must contain methods of preventing people from slipping off the ramp. These methods may include curbs, walls, railings or projecting surfaces, according to Section 4.8.6, listed on United States Access Board.
  
  

Outdoor Ramps

• Outdoor ramps must be designed to keep water from accumulating on walking surfaces, pursuant to Section 4.8.8, according to United States Access Board.