What are radial shakes in timber?

Radial shakes in timber are cracks that occur along the radius of a log or piece of wood, typically originating from the center and extending outward. These shakes can result from various factors, including drying stresses as the wood shrinks during the drying process, or from natural growth patterns in the tree. They can affect the structural integrity and aesthetic value of the timber, making it important for lumber producers to monitor and manage their occurrence. Proper drying techniques can help minimize the risk of radial shakes.