MIL-DTL-29229B(YD)
TABLE II. Options for rigid frogs (see 6.2).
Option Choose
Choose
Description
Number
one
one
1
A
With stub rails.
a
Field rails bolted to stub rails (see figure 2).
b
Field rails welded to stub rails (see figure 3).
B
Without stub rails.
a
Field rails connected to switch base plate using rail clips (see
figure 4).
b
Field rails welded to switch base plate (see figure 5).
2
Specify angle of track intersection.
3
If application requires a radius frog, specify the radius and
geometry.
3.1.4 Turntable frogs. The turntable frog shall consist of a fabricated steel turntable base
supporting a fabricated steel turntable and rail. The angle of rail intersection is the rotation angle
for the turntable frog (see table III). The turntable frogs shall be constructed to provide adequate
drainage to prevent ponding of rainwater. Additional options for turntable frogs are listed in
table III and depicted on NAVFAC drawings 1404040 and 1404041.
TABLE III. Options for turntable frogs (see 6.2).
Option
Choose
Choose
Description
Number
One
one
1
A
Field rails bolted to stub rails (see figure 2).
B
Field rails welded to stub rails (see figure 3).
2
A
Manually operated throw mechanism.
B
Power operated throw mechanism.
a
Cover plates bolted in place.
b
Cover plates hinged to switch.
3
Specify angle of rail intersection.
4
If turntable frog is to be used on a radius, specify the radius
(curvature is used for the stub rails).
3.2 First article. When specified (see 6.2), the contractor shall furnish one track fitting for first
article inspection and approval (see 4.2.1 and 6.3).
3.3 Materials. Materials used shall be free from defects which would adversely affect the
performance or maintainability of individual components or of the overall assembly. Materials not
specified herein shall be of the same quality used for the intended purpose in commercial practice.
Unless otherwise specified herein, all equipment, material, and articles incorporated in the work
covered by this specification are to be new and fabricated using materials produced from
recovered materials to the maximum extent possible without jeopardizing the intended use. The
5
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