Appendix IV.

Table of Resistances of Railroad Trains with Different Grades and Speeds.
Rise of
gradient,
feet
per mile.		 Resis-
tance
due to
ascent
alone
in lbs.
per ton
(2,000
lbs.)
of train.		 Total
resis-
tance,
lbs.
per ton,
at rate
of 5
miles
per
hour.		 10
miles
per
hour.		 15
miles
per
hour.		 20
miles
per
hour.		 25
miles
per
hour.		 30
miles
per
hour.		 35
miles
per
hour.		 40
miles
per
hour.		 45
miles
per
hour.		 50
miles
per
hour.		 60
miles
per
hour.		 70
miles
per
hour.
  0   6 .1 6 .6 7 .3 8 .3 9 .6 11 .2 13 .1 15 .3 17 .8 20 .6 27 .0 34 .6
  5 1 .8 7 .9 8 .4 9 .1 10 .1 11 .4 13 .0 14 .9 17 .1 19 .6 22 .4 28 .8 36 .4
 10 3 .7 9 .8 10 .3 11 .0 12 .0 13 .4 14 .9 16 .8 19 .0 21 .5 24 .3 30 .7 38 .3
 15 5 .6 11 .7 12 .2 12 .9 13 .9 15 .2 16 .8 18 .7 21 .9 24 .4 27 .2 33 .6 41 .2
 20 7 .5 13 .6 14 .1 14 .8 15 .8 17 .1 18 .7 20 .6 22 .8 25 .3 28 .1 34 .5 42 .1
 25 9 .4 15 .5 16 .0 16 .7 17 .7 19 .0 20 .6 22 .5 24 .7 27 .2 31 .0 37 .4 45 .0
 30 11 .3 17 .4 17 .9 18 .6 19 .6 21 .9 22 .5 24 .4 26 .6 29 .1 31 .9 38 .3 45 .9
 35 13 .2 19 .3 19 .8 20 .5 21 .5 22 .8 24 .4 26 .3 28 .5 31 .0 33 .8 40 .2 47 .8
 40 15 .1 21 .2 21 .7 22 .4 23 .4 24 .7 26 .3 28 .2 30 .4 32 .9 35 .7 42 .1 49 .7
 45 17 .0 23 .1 23 .6 24 .3 25 .3 26 .6 28 .2 30 .1 32 .3 34 .8 37 .6 44 .0 51 .6
 50 18 .9 25 .0 25 .5 26 .2 27 .2 28 .5 30 .1 32 .0 34 .2 36 .7 39 .5 45 .9 53 .5
 60 22 .7 28 .8 29 .3 30 .0 31 .0 32 .3 38 .9 35 .8 38 .0 40 .5 43 .5 49 .9 57 .5
 70 26 .5 32 .6 33 .1 33 .8 34 .8 36 .1 37 .7 39 .6 41 .8 44 .3 47 .1 53 .5 61 .1
 80 30 .3 36 .4 36 .9 37 .6 38 .6 39 .9 40 .5 42 .4 44 .6 47 .1 49 .9 56 .3 63 .9
 90 34 .0 41 .0 40 .6 41 .3 42 .3 43 .6 45 .2 47 .1 49 .3 51 .8 54 .6 61 .0 68 .6
100 37 .8 43 .9 44 .4 45 .1 46 .1 47 .4 49 .0 51 .9 54 .1 56 .6 59 .4 65 .8 73 .4
110 41 .6 47 .7 48 .2 48 .9 49 .9 51 .2 52 .8 54 .7 56 .9 59 .4 62 .2 68 .6 76 .2
120 45 .4 51 .5 52 .0 52 .7 53 .7 55 .0 56 .6 58 .5 60 .7 63 .2 66 .0 72 .4 80 .0
130 49 .2 55 .3 55 .8 56 .5 57 .5 58 .8 60 .4 62 .3 64 .5 67 .0 69 .8 76 .2 83 .8
140 53 .0 59 .1 59 .6 60 .3 61 .3 62 .6 64 .2 66 .1 68 .3 70 .8 73 .6 80 .0 87 .6
150 56 .8 62 .9 63 .4 64 .1 65 .1 66 .4 68 .0 69 .9 72 .1 74 .6 77 .4 83 .8 91 .4
160 60 .6 66 .7 67 .2 67 .9 68 .9 70 .2 71 .8 73 .7 75 .9 78 .4 81 .2 87 .6 95 .2
170 64 .3 70 .4 70 .9 71 .6 72 .6 73 .9 75 .5 77 .4 79 .6 82 .1 84 .9 91 .3 98 .9
180 68 .1 74 .2 74 .7 75 .4 76 .4 77 .7 79 .3 81 .2 83 .4 85 .9 88 .7 95 .1 102 .7
190 71 .9 78 .0 78 .5 79 .2 80 .2 81 .5 83 .1 85 .0 87 .2 89 .7 92 .5 98 .9 106 .5
200 75 .7 81 .8 82 .3 83 .0 84 .0 85 .3 86 .9 88 .8 91 .0 93 .5 96 .3 102 .7 110 .3
210 79 .5 85 .6 86 .1 86 .8 87 .8 89 .1 90 .7 92 .6 94 .8 97 .3 100 .1 106 .5 114 .1
220 83 .3 89 .4 89 .9 90 .6 91 .6 92 .9 94 .5 96 .4 98 .6 101 .1 103 .9 110 .3 117 .6
230 87 .1 93 .2 93 .7 94 .4 95 .4 96 .7 98 .3 100 .2 102 .4 104 .9 107 .7 114 .1 121 .7
240 90 .8 96 .9 97 .4 98 .1 99 .1 100 .4 102 .0 103 .9 106 .1 108 .6 111 .4 117 .8 125 .4
250 94 .6 100 .7 101 .2 101 .9 102 .9 103 .2 105 .8 107 .7 109 .9 112 .4 115 .2 121 .6 129 .2
260 98 .4 104 .5 105 .0 105 .7 106 .7 107 .0 108 .6 110 .5 112 .7 115 .2 118 .0 124 .4 132 .0
270 102 .2 108 .3 108 .8 109 .5 110 .5 111 .8 113 .4 115 .3 117 .5 120 .0 122 .8 129 .2 136 .8
280 106 .0 112 .1 112 .6 113 .3 114 .3 115 .6 117 .2 119 .1 121 .3 123 .8 126 .6 133 .0 140 .6
290 109 .8 115 .9 116 .4 117 .1 118 .1 119 .4 121 .0 122 .9 125 .1 127 .6 130 .4 136 .8 144 .4
300 113 .6 119 .7 120 .2 120 .9 121 .9 123 .2 124 .8 126 .7 128 .9 131 .4 134 .2 140 .6 148 .2