Table 1. Design Procedure

Figure 10. Crane Reaction to Grades on Horizontal Curves

Table 1. Design Procedure - continued - 4_860_020063

4_860_02
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MIL-HDBK-1005/6

Table 1

Design Procedure

Description

Procedure

Reference

Equivalent

Equivalent length of crane equals 2f where:

Figures 4

length

and 5

(8, 16, 32 wheel);

2c 2

(24 wheel)

Reduced

For any circular curve, of a given radius R, where R

Figure 4

gage (GR)

is the radius of the inner rail:

GR ' (R 2 % 2e

R 2 & f 2 % e 2) & R

Notes: (1) Check to be certain that a gage reduction

is not required for a 300-ft. radius, i.e.,

G & GR # float of crane

(2) For two or more cranes, use the average

equivalent length of the cranes to obtain the reduced

gage, and check to ascertain that this gage reduction

is within the float capability of each crane. If the

gage reduction is too great for any crane, adjust the

track design using the equivalent length of the

critical crane until a satisfactory reduced gage is

obtained.

Lateral

Lateral float considerations:

Par. 3.4

Float

Figures

(e - GR) # (available lateral float),

4, 6 and

(a)

for a large radius curve, i.e., R > 300

ft.

(Gn1 - Gn2) # (available lateral float),

(b)

for any two points, not more than

equivalent length of crane apart.

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