CEMP-E
TI 850-02
AFMAN 32-1125(I)
1 MARCH 2000
Table 6-9. Switch Ties for Standard Turnouts
Number of Ties of Each Length
Switch Point
Frog #
Length (ft)
Lead Distance
9 ft
10 ft
11 ft
12 ft
13 ft
14 ft
15 ft
16 ft
Total Ties
7
16-1/2
62 ft-1 in.
7
13
6
5
3
4
6
6
50
8
16-1/2
68 ft
7
13
6
6
4
5
7
6
54
9
16-1/2
72 ft-3.5 in.
7
13
7
7
6
5
8
6
59
10
16-1/2
78 ft-9 in.
7
15
8
7
6
6
7
8
64
11
22
91 ft-10.25 in.
10
17
9
8
8
6
8
8
74
12
22
96 ft-8 in.
10
17
10
9
8
7
9
9
79
14
22
107 ft-0.75 in.
10
17
13
10
9
8
11
11
89
15
30
126 ft-4.5 in.
15
21
15
11
10
9
11
12
104
16
30
131 ft-4 in.
15
21
15
12
12
11
10
12
108
18
30
140 ft-11.5 in.
15
24
17
12
11
11
13
14
117
20
30
151 ft-11.5 in.
15
26
19
12
12
11
15
16
125
Note: Each tie set includes 2 - 15 ft ties for head blocks (which hold the switch stand).
c. Treatment.
(1) All wood ties will be pressure treated with preservative as specified below.
(2) The preferred preservative for ties is a creosote-coal tar solution (60/40) as specified in AWPA
standard P2.
(3) For ties used west of the Mississippi River, a creosote petroleum solution (50/50) as specified by
AWPA standard P3 may be used.
d. Anti-splitting Devices. To reduce the tendency of wood to split, anti-splitting devices are often
applied to the ends of ties. Anti-splitting devices are recommended for turnout ties but may be specified
for standard track ties. Of the two general types, as shown in figure 6-20, the nail plates are more
effective and thus preferred.
6-31
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