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What is a 1/12 slope?

1:12 slope ratio (ADA Recommended) means that for every inch of rise, you will need one foot of ramp. As an example, a 12 inch rise would require a 12 foot ramp to achieve a 1:12 ratio.

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To determine the length of ramp for your application, you need to determine the rise. The rise is the vertical measurement between the ground and where the top of the ramp is going to be. Disability Systems recommends a 1:12 slope on most applications. Residential applications can use a 2:12 slope ratio if space is an issue but only if an assistant is present to help push the wheelchair or to help a person walking on the ramp. For commercial public access, a 1:12 ratio is required, check your local codes. 1:12 slope ratio (ADA Recommended) means that for every inch of rise, you will need one foot of ramp. As an example, a 12 inch rise would require a 12 foot ramp to achieve a 1:12 ratio. 2:12 slope ratio means that for every two inches of rise, you would need one foot of ramp. As an example, take the total amount of rise in inches and divide by 2. If you have a 12 inch rise divide by 2 and the resulting number would be 6, this is the length of ramp which is required in feet to achieve a 2:12 ratio. 3:12 slope ratio means that for every three inches of rise you would need one foot of ramp. As an example, take the total amount of rise in inches and divide by 3. If you have a 12 inch rise divide by 3 and the resulting number would be 4, this is the length of ramp which is required in feet to achieve a 3:12 ratio. This slope ratio is only used to move an unoccupied wheelchair, never an occupied wheelchair and should never be used for walking.

NOTE: *** Check Your Local Code to Ensure Compliance

For ADA compliance, any ramp that is used on a rise of 6 inches or more, must have handrails and be 36" wide. Any ADA compliant ramp longer that 30 feet (30 inch rise) must include a resting platform and have guardrails (Baulusters spaced 3.5" - 4" apart) to prevent a child from falling through.Contact Disability Systems, Inc. at 1-877-258-7423 for pre-fabricated ramp information or email at info@disabilitysystems.com

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What does 1/14 mean for a ramp?

Calculating The Ramp's Slope 1, the gradient of wheelchair ramps with lengths of over 1,900 milimetres should not exceed 1:14 and should not be less than 1:10. This slope ratio indicates that for every 14 metres across the length of the ramp, the slope height increases or decreases by 1 metre.

In Australia, certain laws and regulations have been implemented to ensure that public ramps follow certain specifications. These aim to protect the safety of the people while providing them with better access to areas that are open to the public. One of the specifications covered by these regulations is the gradient or slope of a ramp. Regulating the steepness of wheelchair and accessibility ramps helps ensure that these pathways can be easily and safely used by those who have mobility issues.

Ramp Laws And Regulations

According to the Disability Discrimination Act (DDA), which was signed in 1992, it is unlawful to discriminate against individuals by limiting their access to public areas and certain aspects of life due to their physical activities. Under this law, organisations, businesses, institutions, and government agencies have to make sure that their public facilities, establishments, offices, and other areas can be accessed by everyone. This means installing different types of ramps to allow people in wheelchairs and other mobility aids to easily access these places. Aside from the DDA, certain provisions of the Australian Standards (AS) require buildings, facilities, and other structures to follow specific specifications when it comes to installing and constructing certain accessibility features, such as ramps. One of these provisions, known as AS1428.1, covers all the necessary information regarding the required specifications of accessibility ramps.

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