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TM 38-400/NAVSUP PUB 572/AFMAN 23-210 MCO 4450.14/DLAM 4145.12
lower of the units which it separates and the re-
of the foundation must afford at least 1 inch of slope for
quired increase in height is obtained by placing a
each lineal foot of length. At most activities, the sloping
3-inch thick spacer between the joist and the bol-
of stacks of unitized lumber is common practice. The
ster.
foundations of all stacks, except the last stack of a row,
must be spaced or arranged to permit the entrance of
the fork truck. For this reason, long stringers cannot be
used successfully as foundations for draft stacked
lumber, especially for the center foundation.
d. Portable lumber foundations. The application of
the portable lumber foundation for lumber storage is
illustrated in figure 5-10.
The stability of these
foundations is obvious and they afford sufficient
ventilation beneath the stack for drying purposes. The
foundation is composed of creosotetreated timber to
prevent deterioration. The portable lumber foundation is
spaced on 5-foot 4-inch centers (fig 5-11). This spacing
of the foundation, constructed as shown, produces the
desired slope and is sufficient for the storage of most
species of lumber.  However, hardwoods and some
other types of lumber require additonal foundation
support to prevent bow and warp during the drying
process.  This portable foundation can be increased
easily from a 4to a 7-point foundation to accommodate
hardwood drafts stickered in accordance with paragraph
176. This increased support is achieved by placing an
additonal foundation unit midway between units A, B, C,
and D shown in figure 55. The unit between is erected
the same as the
Figure 5-10. Application of the portable lumber
foundation.
Figure 5-11. Portable lumber foundation spaced on 5-foot 4-inch centers.
5-12

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