Question

what do building codes require of any components in contact with the ground, masonry, or concrete, such as sill plates?
unseasoned lumber
coated with a fungicide
made from treated lumber
placed on top of termite shields

Explanation:

Building codes aim to ensure durability and protection against moisture - related damage and pests. Unseasoned lumber is not suitable as it can warp and rot. A fungicide coating may not be sufficient for long - term protection. Termite shields are a separate component and do not address the core requirement of the material itself. Treated lumber is chemically processed to resist decay, rot, and insect damage, which is crucial for components in contact with ground, masonry, or concrete.

Answer:

made from treated lumber