tops, folding windshields, etc; these reductions are made in accordance with
AR 22010. The designation PIGGYBACKED applies only to data for cargo
trailers; one trailer with wheels removed is inverted and placed on top of
the bottom trailer; they are then securely lashed together. When reporting
the INDEX NO. for this data listing, it must be recognized that the data
include the dimensions and weight of two trailers.
d. Loading drawings. In paragraph 1.17, you read that proposed rules
or specifications for shipping DOD materiel must be submitted to
Headquarters, Military Traffic Management and Terminal Service (MTMATS)
where they are taken up with the AAR's Mechanical Division. Among the many
new items developed for the Army for which shipping specifications must be
established are missiles and their supporting equipment. The XM48 Chaparral
fulltracked, selfpropelled missile is an example. Responsibility for
specifying how this equipment shall be loaded and braced rests with the U.
S. Army Materiel Command whose Savanna Army Depot prepares the appropriate
drawings. You see their loading and bracing diagrams for the Chaparral's
support maintenance shop set in figure 1.9. Notice that note "E" in figure
1.9 (3) refers you to the AAR manual for applicable loading rules. Also,
note the box in the upper right corner of figure 1.9 (1) showing approval by
the Mechanical Division of the AAR and the signature of an authorized
official at MTMTS.
1.19. SUMMARY
In this country, where railroads are privately owned, the Association
of American Railroads is the final authority on how shipments are to be
loaded on rail cars. The Army follows AAR rules and, when necessary,
requests changes or additions to them. New specifications are often needed
to accommodate new equipment. So important is observance of loading rules
that the Army makes it a command responsibility, with the shipper himself
directly responsible for the actual loading. Proper car loading procedures
are designed to prevent damage, avoid delays, and safeguard property and
employees.
Sections 1 and 6 of the AAR's Rules Governing the Loading of Commodities on
Open Top Cars are of particular importance to the military shipper. Section
1 has general rules and section 6 has rules for loading specific military
equipment. The general rules essentially limit dimensions and weight of the
load and specify how the load will be positioned on a car. Section 6
contains drawings showing how individual military items are loaded and
listing how much of what materials are needed to load them.
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