R A I L TRANSPORTABILITY G U I D A N C E
Section I. GENERAL
guidance to prepare, load, tie down, and unload the
7-1. Scope
vehicles.
This chapter provides transportability guidance for rail
movement of the M39-series trucks, 5-ton, 6x6. It covers
Additional cargo, as approved by the activity offering the
significant technical and physical characteristics and safety
trucks for transport, may be transported with the vehicles.
considerations; prescribes the materials and provides
Section II. TRANSPORT ON CONUS RAILWAYS
all 5-ton trucks except for the trucks, stake, bridge-
7-3. General
transporting, which will require a car minimum width of
The transportability guidance contained in this section is
10 feet 6 inches. Figure 7-2 is a blocking and tiedown detail
applicable when the trucks are transported on CONUS
diagram for figure 7-1. Table 7-1 is a bill of materials for
railways. Consideration is given to single and multiple
movements on the types of railcars normally used for the
data concerning the application of materials required for
movement of these vehicles. The vehicles, when loaded on
securing vehicles on general purpose flatcars.
suitable railcars, can be transported without sectionaliza-
tion or major disassembly, except for the M291-series ex-
NOTE
pansible vans, which have a nonreducible maximum height
of 137.8 inches. These vehicles will require special routing
A staggered nailing pattern should be used when
under the provisions of restricted rail movements. All other
lumber or laminated lumber is nailed to the floor
vehicles, when at their respective reduced heights, are
of the railcar. Additionally, the nailing pattern
transportable within the Association of American Railroads
for an upper piece of laminated lumber will be
"Outline Diagram for Single Loads, Without End Over-
adjusted as required so that a nail for that piece
hang, on Open-Top Cars," as shown in both the Railway
will not be driven through, onto, or right beside
Line Clearance Publication and the Official Railway Equip-
a nail in the lower piece of lumber.
ment Register.
7-6. Loading
Trucks
on
Special -Purpose
The degree of preparation for the vehicles before being
Flatcars
transported by railcar is dependent upon the operational
a. Trucks may be placed in the tiedown position on the
commitment.
railcar by a crane, or they may be driven or towed onto the
railcar provided a suitable ramp or bridge is available.
Flatcar
b. Figure 7-3 shows 5-ton trucks loaded on a flatcar
equipped with center tiedown rails. Table 7-3 provides in-
a. Trucks may be placed in the tiedown position on the
structions for the application of chain tiedowns for secur-
railcar by a crane, or they may be driven or towed onto the
ing vehicles on center tiedown flatcars. Table 7-4 gives the
railcar provided a suitable ramp or bridge is available.
quantity of trucks that can be loaded on cars with center
b. The load shown in figure 7-1 is based on a flatcar
tiedown rails.
minimum width of 9 feet 6 inches, which will accommodate
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