According to code, how deep should stumps and roots be removed below the surface of a building site?

The requirement to remove stumps and roots to a depth of 1 foot below the surface of a building site is based on ensuring proper site preparation and stability for construction. Removing stumps and roots to this depth minimizes the risk of future settlement or ground disturbance that could occur as the organic material decomposes. This depth also helps in preventing issues related to pest infestations and root growth that could interfere with buildings, utilities, or landscaping.

By establishing a standard of 1 foot, the code aims to balance thorough site preparation with practical excavation efforts, ensuring that the ground remains stable and reliable for future construction activities while avoiding unnecessary expense or excessive digging that deeper removal might require.