Portable lumber foundations.

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