the sketch properly located? Yes, its CG is more than 10 feet from either
truck center.
1.16. RULE 5LOCATION OF LOAD, ALL CARS
The weight of the load on one truck must not exceed onehalf of the
stenciled load limit. When the weight is in doubt, it must be verified by
weighing. In addition, the load must be so located that the weight along
both sides of the car is about equal for the entire length of the load.
When the load's shape or weight or both combined make it impossible to
distribute its weight equally crosswise of the car, suitable ballast must be
used to equalize the weight.
1.17. THE AAR RULES FOR DOD MATERIEL
As mentioned in paragraph 1.11, section 6 of the AAR's Rules Governing
the Loading of Commodities on Open Top Cars specifies how military materiel
will be loaded on open top cars. Section 6 consists of drawings
illustrating how individual items are to be secured to the cars. Drawings
cover particular equipment in several categories, such as artillery, boats,
containers, and vehicles. Among the vehicles are 1/4ton trucks, 1 1/2ton
trailers, and tanks and similar vehicles under 60,000 pounds. Also included
in section 6 are material charts giving dimensions of various wooden and
metal blocking patterns specified
in the drawings. Pattern 16 is a
wooden chock, shown in the sketch,
that is commonly specified for
wheeled vehicles. Figure 1.5
reproduces a page from section 6
showing AAR loading specifications
for 1/4ton trucks. Item A under
Description refers to clearances in
the sketch reproduced in paragraph
1.13a of this text. Items D
through P appear on the next page
of the rule book and are not
included here. Notice references to patterns under description of the
lettered items. Shippers of DOD materiel desiring new rules or
specifications, or changes to those presently in effect, must submit such
proposals to Headquarters, Military Traffic Management and Terminal Service,
Washington, D. C. 20315, through appropriate channels, for handling with the
Mechanical Division of the AAR.
1.18. ARMY REQUIREMENTS
From the foregoing, you can see that the military works closely with
the AAR. Nothing may be shipped over commercial rail
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