This will give you the amount of clearance for a given length
of track at a specific grade.
Length and clearances are in inches.
Percentage of grade
1% 2% 3% 4% 5% 6% 7% 8% 9% 10%
Length
of track
in inches
6 0.06 0.12 0.18 0.24 0.30 0.36 0.42 0.48 0.54 0.60
12 0.12 0.24 0.36 0.48 0.60 0.72 0.84 0.96 1.08 1.20
18 0.18 0.36 0.54 0.72 0.90 1.08 1.26 1.44 1.62 1.80
24 0.24 0.48 0.72 0.96 1.20 1.44 1.68 1.92 2.16 2.40
30 0.30 0.90 1.20 1.50 1.80 2.10 2.40 2.70 3.00 3.30
36 0.36 0.72 1.08 1.44 1.80 2.16 2.52 2.88 3.24 3.60
42 0.42 0.84 1.26 1.68 2.10 2.52 2.94 3.36 3.78 4.20
48 0.48 0.96 1.44 1.92 2.40 2.88 3.36 3.84 4.32 4.80
54 0.54 1.08 1.62 2.16 2.70 3.24 3.78 4.32 4.86 5.40
60 0.60 1.20 1.80 2.40 3.00 3.60 4.20 4.80 5.40 6.00
66 0.66 1.32 1.98 2.64 3.30 3.96 4.62 5.28 5.94 6.60
72 0.72 1.44 2.16 2.88 3.60 4.32 5.04 5.76 6.48 7.20
78 0.78 1.56 2.34 3.12 3.90 4.68 5.56 6.34 7.12 7.80
84 0.84 1.68 2.52 3.36 4.20 5.04 5.88 6.72 7.56 8.40
90 0.90 1.80 2.70 3.60 4.50 5.40 6.30 7.20 8.10 9.00
96 0.96 1.92 2.88 3.84 4.80 5.76 6.72 7.68 8.64 9.60
102 1.02 2.04 3.06 4.08 5.10 6.12 7.14 8.16 9.18 10.0
108 1.08 2.16 3.24 4.32 5.40 6.48 7.56 8.64 9.72 10.8
114 1.14 2.28 3.42 4.56 5.70 6.84 7.98 9.12 10.26 11.4
120 1.20 2.40 3.60 4.80 6.00 7.20 8.40 9.60 10.8 12