TM 55-607/NAVSEA OP 3221 Rev 2
c. Voids that occur at the sweatboards are shored in a similar fashion: a two-face-board frame is placed against the
unit load and supported with kickers to the sheathing, as shown in figure 8-31. The number of kickers will vary with the
severity of the hull camber and sheer, since at least one point of the face-board assembly will already be in contact with
sheathing. For any situation, however, the bearing area against the sheathing should be equal to at least the equivalent
of four kickers. The kickers, in turn, should be toenailed to the sheathing and secured against upward movement by the
addition of' a 2 by 4-inch cleat. Ideally, the sheathing and kickers should be placed opposite the ship's stiffeners for
maximum strength. The size of many unit loads prevents this, and frequently sheathing and shoring material must be
secured against the sweatboards in between the stiffeners. To provide added strength to the sweatboards in this area, a
2 by 6-inch minimum board should be nailed to the sweatboard prior to the installation of sheathing. This reinforcement
technique, part of the void shoring process, is normally required in the top layer only.
8-33
