A GUIDE TO UNIVERSAL DESIGN
Even with highly skilled crews, building ramps is not an exact science. The slump of the concrete often creates an inconsistent slope. Designing ramps at a slope of 1:12 leaves no room for error during construction. Designing at 1:14 is preferable whenever possible.
Specify that no two points 24” apart shall be steeper than 1:14 when measured with a 24” Smart Level.
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