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It is also recommended for powered wheelchairs and scooters. This slope is feasible for normally fit adult caregivers to push a 150lb occupant up a ramp. The formula to use is height in inches divided by 2 equals length of ramp in feet. It is also recommended for caregivers pushing a heavy patient.Ī slope of 6 inches of ramp for every 1 inch of height is 9.6 degrees. This recommendation is for a slope shallow enough for people in wheelchairs to manage the incline under their own power. This creates a 4.8 degree slope for a ramp. The ADA guidelines are 1 foot of ramp length for each 1 inch of height. The 'slope' of a wheelchair ramp is a critical element that needs serious consideration.
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This is because it is not a permanent structure affixed to the home. If it is a garage entry ramp, then you do not even need to ask. They don't have any building codes for exterior ramps either. Ask the Building Permit Department if they require a permit for the aluminum ramp designs that have a lip that sets on the top step. They will know what you are talking about and will nearly always tell you no permit is needed.