Figure 6. Floor blocking.
Table 1. Standard Thicknesses for Yard Lumber
(2) Crosswise floor blocking, as shown in figure 3,
should not be of less than 2-inch by 4-inch or 2-inch by 6-inch
SIS* or S2S*
material. It should extend the full width of the boxed or crated
article against which it bears.
(3) Cross car bracing should be large enough to
hold the load in position in the car properly. Crosswise
bracing members that are not reinforced should be placed
with the narrow face against the load to utilize the maximum
strength of the member, as shown in figure 7.
*Surfaced one side or surfaced two sides