What length of ramp do I require?
Length of ramp = Chosen Gradient x Height (Change in level)
- Select a gradient appropriate to the situation
- Measure the Height to be overcome
- Multiply the chosen Gradient by the Height to calculate the minimum length of ramp required.
Example:
Chosen gradient = 1:10
Height = 150mm (6”)
Length required = 10 x 150mm (6”) = 1500mm (60”)
Choose a ramp with a minimum length of 1500mm (60”)
Remember – Consider the available space and choose the longest ramp possible as this achieves a shallower gradient and is easier to climb.
What gradient will I achieve with a specific ramp?
Gradient = Length of ramp DIVIDED BY Height (Change in level)
- Select the specific ramp to be used
- Measure the Height to be overcome
- Simply divide the Length of the chosen ramp by the Height to calculate the Gradient that will be achieved.
Example:
Length of chosen ramp = 1800mm (72”) DEVIDED BY Height = 300mm (12”)
Gradient = 1800mm (72”)
300mm (12”)
= 6 (1:6 gradient)
Check the achieved gradient against the Gradient Guide to be sure that it is appropriate for the intended use