How Steep Is 15 Degrees?
How Steep Is 15 Degrees? Slope Angle (degrees) Gradient Grade (%) 14 1 24.9 15126.8 16 1 28.7 What degree is considered steep? Slope (%) Approximate degrees Terminology 30 – 45 16.5 – 24 Very strong slope 45 – 70 24 – 35 Extreme slope 70 – 100 35 – 45 Steep slope > 100