MIL-DTL-15011K
3.2.1.3.1. Splits. Splits (see 6.4) caused by the expansion of season checks, shakes, and the
driving of fasteners during assembly shall be no longer than the width of the boards at time of
manufacture; however, these splits will propagate over time. At Lot acceptance of the pallets, the boards
shall have splits that are no longer than what is detailed in Table 1. If there are multiple splits in one
board, then the longest split shall be compared with Table 1. Regardless of the cause of splitting, the split
shall be straddled with additional fasteners when the split is more than 3 inches in length. Open splits with
visible fastener shanks or legs shall be limited as follows. No more than one open split with a visible
fastener shank or leg per connection shall be permitted and not more than one-third of the components per
pallet shall contain open splits with visible fastener shanks or legs at the completion of manufacture.
Table 1. Allowable length of splits at time of lot acceptance
Pallet component
Component numbers from
Maximum allowable
split length
Figure 5, 6, or 7
Style 1 Style1A Style1B
Outer top deckboards
1
1
1
W
Inner top deckboards
2,4
2
2,4
1/4 L
Outer stringer boards
7
6
7
W
Center stringer board
3
3
3
1/4 L
Outer bottom deckboards
8
7
8
W
Center bottom deckboard(s)
9
8
9
1/4 L
Outer posts
6
5
6
1/2 L, or 1/2 H, or 1/2 W
Center posts
5
4
5
1/2 L, or 1/2 H, or 1/2 W
Notes: L = Length of board, H = Height of board , W = Width of board
goes through the entire thickness of the board. Shakes running the full thickness of a component and
longer than 3 inches shall be straddled with additional fasteners in the top and bottom deckboards.
3.2.1.3.3. Season checks. Season checks (see 6.4) which extend through the board shall be
considered as splits (see 3.2.1.3.1). Season checks running the full thickness of a component and longer
than 3 inches shall be straddled with additional fasteners in the top and bottom deckboards.
3.2.1.3.4. Knots and holes. Sound knots, loose knots, knot holes, and knot clusters shall be
measured and restricted. The maximum allowable width of these knots shall be no more than 1/3 the
width of the board in which contains them. The location of the knots shall be as close to the center of the
board as possible. Deckboards and stringers shall not have knots, loose knots, knot holes, or knot clusters
along their edges. Knots which occur in fastening areas shall not be used. For knot clusters, the sum of the
width of the knots within a length equal to the width of the board in which they occur shall not exceed 1/3
the width of the board in which contains them.
3.2.1.3.5. Wane. Exposed wane (see 6.4) shall not be permitted on the outer edges of the outer
deckboards, stringer boards, or posts. Wane is permissible on the surface or edge of the other components,
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