How should lumber be stacked to ensure stability?

Lumber should be stacked on solid supported sills to ensure stability. This method provides a firm and level base that minimizes the risk of the stack tipping or shifting. When lumber is placed on a stable surface, it helps to distribute the weight evenly and reduces the likelihood of deformation caused by moisture or environmental conditions. In addition, using supported sills prevents direct contact with the ground, which can lead to rot, infestation, or moisture uptake.

In contrast, stacking lumber on unstable ground or in a disorganized manner increases the risk of accidents and can compromise the integrity of the wood. Creating a stack on top of another lumber stack without proper support can lead to instability and potential collapse. Therefore, ensuring that the lumber is properly stacked on solid surfaces is essential for safety and preserving the quality of the material.