TM 55-607/NAVSEA OP 3221 Rev 2
Figure 7-2. Construction of wood decking with 1-inch lumber.
(2) Figure 7-3 illustrates basic flooring techniques in the tween-deck holds with a single layer of 2 by 10-inch
lumber. The floor is laid directly on the deck, edge-to-edge and butt-to-butt. Boards may be laid either fore and aft or
athwartships; however, the athwartship orientation is preferred if the entire hold is to be floored or if only the curve of the
hull is to be floored. Flooring laid in this manner will closely follow the hull contour with a minimum of exposed metal
deck. If obstructions on the deck preclude the laying of a flush flooring surface, the flooring may be elevated on a
foundation of 4 by 4-inch runners. Runners may be laid fore and aft or athwartships; however, spacing should not
exceed 20 inches center-to-center. Adequate space should be left between runners and the shell plating to allow for
condensation runoff.
7-3
