What type of bolts must be used for a sole plate on a foundation wall?

The use of 1/2 inch bolts for securing a sole plate to a foundation wall is required because they provide sufficient strength and load-bearing capacity to anchor the framing members firmly in place. This size is commonly specified in building codes as it balances the need for structural integrity with practical installation considerations.

1/2 inch bolts are generally considered adequate for transferring loads from the building's structure to the foundation, maintaining stability and durability while being less cumbersome than larger bolts, which could complicate installation without providing proportional benefits in most residential applications.

Using bolts of a different size, whether larger or smaller, may not meet code requirements or could lead to issues such as inadequate anchoring or complications during installation. It is crucial for inspectors to be knowledgeable about these specifications to ensure compliance with safety standards and best practices in construction.