MIL-HDBK-1005/6

TABLE 4

Symbols and Nomenclature

Definition

Symbol

G

Nominal track gage on tangent track, centerline to centerline of rail

of a two-rail-system or centerline to centerline of track of a four-

rail-system.

Gn

Gage at any P.C.C. of Transition Curve.

GR

Reduced gage for a given radius.

Gs

Reduced gage at S.C.T.

Gmin

Reduced gage at P.C.T. or T.C.

g

Rate of grade of inside rail.

f

One half equivalent length of crane.

e

Crane gage (also normally tangent track gage).

Float

Lateral movement of crane tracks.

F

One-half maximum lateral float capability, where maximum float equals

sum of float in either direction.

T.S.C.

Point of Tangent to Switch (fixed) Curve.

S.C.T.

End of Switch Curve and beginning of Flexible Transition Curve (on

inner alignment).

P.C.C.

Point of Compound Curvature (common point of any two successive

circular arcs of transition).

P.C.T.

Point of Compound Transition (on inner alignment where no main

circular curve is employed).

T.C.

End of Transition Curve (point of Transition Curve to main circular

curve).

ts

Length of lead of inner Switch Curve over outer Switch Curve.

t1

Short tangent length between outer Switch Curve and outer Flexible

Transition Curve.

NOTE:

All dimensions are given in feet, except angles are in degree -

minutes - seconds

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