Jeamar Winches Product Catalog

Calculations

Grades - Slope & Grade Resistance

Grade
(Percent per 100
Horizontal Feet)		 Slope
(Degrees and Minutes
per 100 Horizontal Feet)		 Grade Resistance
(Lbs. Pull per Ton to
Overcome Grade Resistance)
1 0-34 20
2 1-9 40
3 1-43 60
4 2-17 80
5 2-52 100
6 3-26 120
7 4-0 140
8 4-34 160
9 5-9 180
10 5-43 199
11 6-17 219
12 6-51 238
13 7-24 258
14 7-58 277
15 8-32 296
16 9-39 315
17 9-5 334
18 10-12 353
19 10-45 373
20 11-19 392
25 14-2 485
30 15-17 575
35 16-42 660
40 21-48 743
45 24-14 822
50 26-34 895
55 28-49 965
60 30-58 1025
65 33-1 1085
70 34-59 1145
75 36-52 1196
80 38-40 1248
85 40-22 1295
90 41-59 1338
95 43-32 1376
100 45-0 1402