What is one defect commonly found in timber planks?

Warping is a common defect found in timber planks that occurs due to changes in moisture content. When timber dries out unevenly, it can bend or twist, leading to a distortion of its original shape. This defect can affect the structural integrity of the wood and its usability, particularly in scaffolding applications where precision and stability are critical.

Timber that is warped may not sit flat against other surfaces or may not fit properly in structural applications, which can lead to safety hazards. Understanding this defect is important for anyone working with timber, especially in scaffolding, where the stability of the materials directly impacts safety.