TM 55-2200-001-12
Change 4
NATO UNCLASSIFIED
6.
b.
(2) (b)
i
The chocks used for lengthwise and crosswise securing must be of one of the patterns
shown in Figures 1 to 3 and 6, and must, depending on the weight of the vehicle, have the
dimensions shown in the following table.
Figure 6
Wooden chock
Weight of Vehicle
(1)
Diameter of wheels
(f)
Minimum Height of
Chocks (h)
Minimum Width of
Chocks (1)
Minimum Number of
nails per chock
Up to 5 t
Up to 1 m
12 cm
8 cm
2
Over 5 t
Up to 1, 20 m
15 cm
10 cm
4
Up to 10 t
Over 1, 20 m
18 cm
12 cm
4
Over 10 t
Over 1, 20 m
20 cm
20 cm
6
(1) All tonnages shown are metric (2200 lbs)
ii
The chocks are to be securely fired. The nails used for securing must be driven vertically
into the floor and penetrate its thickness to a depth as illustrated in Figures 2 and 3.
-6-
cp
NATO UNCLASSIPIED
Change 4 AA-8
