straight-line distance between limiting points, the rules

are as follows:

Barbed-wire obstacles are constructed primarily

1. The length of tactical-wire entanglement is 1.25

from issue materials; thus both logistical and con-

times the length of the front, times the number of belts,

struction estimates are involved. Table 8-1 gives

regardless of the size of the unit involved.

weights, lengths, and other data required for estimating

truck transportation and carrying party requirements.

2. The length of protective-wire entanglement for

Table 8-2 gives the material and labor requirements for

a defensive position is five times the length of the front

construction of various wire entanglements. Table 8-2 is

being defended, times the number of belts. Since pro-

based on daylight work; for nightwork the man-hours

tective wire encircles each platoon area of a command,

must be increased 50 percent.

the protective-wire entanglement for units is 2.5 times

the average platoon frontage, times the number of

platoons involved.

3. Supplementary wire in front of the FEBA is used

Table 8-2 gives quantities and weights of material

to breakup the line of tactical entanglements. Its length

per linear foot of entanglement. When a layout to scale

is 1.25 times the unit's frontage, times the number of

can be developed, the lengths of the various types of

belts. The length of the supplementary-wire entangle-

entanglements are scaled and the quantities and weights

ment behind the FEBA is approximately equal to 2.5

are computed. When a scaled layout cannot be prepared,

times the distance from the FEBA to the rearmost

the rule-of-thumb method may be used for estimating

reserve unit, times the number of belts. This rule of

the required lengths of tactical- and protective-wire

entanglements. If the length of front is taken as the

thumb is adequate for all units.

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