Section R. 408.15253 - Storage and transfer of lumberRule 5253.
(1) Lumber shall be stacked on foundations constructed to support the maximum load without sinking, sagging or permitting the pile to topple. A pile of lumber which is not stable shall be restacked at once or the area guarded by a barrier.(2) Long packages of lumber shall not be placed on short packages except where a stable pile can be made by use of package separators.(3) Where necessary to insure stability, a package of lumber shall be provided stickers. A sticker shall extend to within 2 inches, plus or minus, of the full width of the package. Stickers shall be aligned 1 above the other.(4) A load of lumber shall be built and secured to insure stability during transit.Mich. Admin. Code R. 408.15253