Appendix A

Table 1.--Three Inches Unbalance
Elevation of outer rail (inches)	0	1/2	1	1 1/2	2	2 1/2	3	3 1/2	4	4 1/2	5	5 1/2	6
Degree of Curvature	Maximum allowable operating speed (mph) curvature
0 deg.30'	93	100	107	113	120	125	131	136	141	146	151	156	160
0 deg.40'	80	87	93	98	103	109	113	118	122	127	131	135	139
0 deg.50'	72	78	83	88	93	97	101	106	110	113	117	121	124
1 deg.00'	66	71	76	80	85	89	93	96	100	104	107	110	113
1 deg.15'	59	63	68	72	76	79	83	86	89	93	96	99	101
1 deg.30'	54	58	62	66	69	72	76	79	82	85	87	90	93
1 deg.45'	50	54	57	61	64	67	70	73	76	78	81	83	86
2 deg.00'	46	50	54	57	60	63	66	68	71	73	76	78	80
2 deg.15'	44	47	50	54	56	59	62	64	67	69	71	74	76
2 deg.30'	41	45	48	51	54	56	59	61	63	66	68	70	72
2 deg.45'	40	43	46	48	51	54	56	58	60	62	65	66	68
3 deg.00'	38	41	44	46	49	51	54	56	58	60	62	64	66
3 deg.15'	36	39	42	45	47	49	51	54	56	57	59	61	63
3 deg.30'	35	38	40	43	45	47	50	52	54	55	57	59	61
3 deg.45'	34	37	39	41	44	46	48	50	52	54	55	57	59
4 deg.00'	33	35	38	40	42	44	46	48	50	52	54	55	57
4 deg.30'	31	33	36	38	40	42	44	45	47	49	50	52	54
5 deg.00'	29	32	34	36	38	40	41	43	45	46	48	49	51
5 deg.30'	28	30	32	34	36	38	40	41	43	44	46	47	48
6 deg.00'	27	29	31	33	35	36	38	39	41	42	44	46	46
6 deg.30'	26	28	30	31	33	35	36	38	39	41	42	43	45
7 deg.00'	25	27	29	30	32	34	35	36	38	39	40	42	43
8 deg.00'	23	25	27	28	30	31	33	34	35	37	38	39	40
9 deg.00'	22	24	25	27	28	30	31	32	33	35	36	37	38
10 deg.00'	21	22	24	25	27	28	29	31	32	33	34	35	36
11 deg.00'	20	21	23	24	26	27	28	29	30	31	32	33	34
12 deg.00'	19	20	22	23	24	26	27	28	29	30	31	32	33

Table 2.--Four Inches Unbalance
Elevation of outer
rail (inches) 0 ¹/2 1 1 ¹/2 2 2 ¹/2 3 3 ¹/2 4 4 ¹/2 5 5 ¹/2 6
Degree of Curvature Maximum allowable operating speed (mph) curvature

0 deg.30' 107 113 120 125 131 136 141 146 151 156 160 165 169 0 deg.40' 93 98 104 109 113 118 122 127 131 135 139 143 146 0 deg.50' 83 88 93 97 101 106 110 113 117 121 124 128 131 1 deg.00' 76 80 85 89 93 96 100 104 107 110 113 116 120 1 deg.15' 68 72 76 79 83 86 89 93 96 99 101 104 107 1 deg.30' 62 65 69 72 76 79 82 85 87 90 93 95 98 1 deg.45' 57 61 64 67 70 73 76 78 81 83 86 88 90 2 deg.00' 53 57 60 63 65 68 71 73 76 78 80 82 85 2 deg.15' 50 53 56 59 62 64 67 69 71 73 76 78 80 2 deg.30' 48 51 53 56 59 61 63 65 68 70 72 74 76 2 deg.45' 46 48 51 53 56 58 60 62 64 66 68 70 72 3 deg.00' 44 46 49 51 53 56 58 60 62 64 65 67 69 3 deg.15' 42 44 47 49 51 53 55 57 59 61 63 65 66 3 deg.30' 40 43 45 47 49 52 53 55 57 59 61 62 64 3 deg.45' 39 41 44 46 48 50 52 53 55 57 59 60 62 4 deg.00' 38 40 42 44 46 48 50 52 53 55 57 58 60 4 deg.30' 36 38 40 42 44 45 47 49 50 52 53 55 56 5 deg.00' 34 36 38 40 41 43 45 46 48 49 51 52 53 5 deg.30' 32 34 36 38 39 41 43 44 46 47 48 50 51 6 deg.00' 31 33 35 36 38 39 41 42 44 45 46 48 49 6 deg.30' 30 31 33 35 36 38 39 41 42 43 44 46 47 7 deg.00' 29 30 32 34 35 36 38 39 40 42 43 44 45 8 deg.00' 27 28 30 31 33 34 35 37 38 39 40 41 42 9 deg.00' 25 27 28 30 31 32 33 35 36 37 38 39 40 10 deg.00' 24 25 27 28 29 30 32 33 34 35 36 37 38 11 deg.00' 23 24 25 27 28 29 30 31 32 33 34 35 36 12 deg.00' 22 23 24 26 27 28 29 30 31 32 33 34 35