Improved Load-Carrying Capacity of Wood in Transverse Compression

The presented data show that the contribution of the edge effect to load-carrying capacity in partial-plate compression is significant. With large total edge-area ratios the edge effect contribution, based on bearing area, can be as much as 5 to 9 times that of full surface compression. Multiple strip bearing-plates increase the load-carrying capacity over full surface and over ASTM values but the increase is even better with square bearing-plates. The maximum stress is attained if small teeth are placed a large distance apart, since this way the shear stress contribution to the load carrying capacity is maximized.

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