Behavior of Shear Plate Connections in Sloping Grain Surfaces

Tests indicate that the behavior of shear plates in a sloping grain surface is similar to behavior in a side grain surface in terms of the load-slip relationship. For a constant load angle, the strength of shear plate connections depends on. grain angle with the minimum strength occurring at a grain angle of 90?. For grain angles between 90? and 180? the “locking-in” effect is a significant factor in the behavior of the connections. The effect of grain angle on strength appears to be more pronounced for 2-5/8-inch shear plates. Although 4-inch shear plates exhibit greater strength than 2-5/8-inch plates, the strength ratio is different at ultimate load and proportional limit load. For a given grain angle the strength of shear plate connections varies with load angle. Ultimate load, proportional limit load, and load at 0.03-inch offset slip are affected in much the same manner.

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