Performance of Truss Plate Joints in Structural Flakeboard and Southern Pine Dimension Lumber

Two types of metal truss connectors in four sizes installed in structural flakeboards were tested in tension. The structural flakeboards were of two types: a commercial three-layer oriented strandboard (OSB) made from 2-3/4-inch- (70 mm) long flakes of northern hardwood and an experimental, single layer, fully oriented board made from 1-5/8-inch- (40 mm) long Douglas-fir. The southern pine was No. 1 KD. The 2 by 4 and 2 by 6 plates showed higher ultimate loads in the flakeboards than the 3 by 4 and 3 by 3 plates. Plates with longer teeth had higher load values than plates with short teeth.

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