The typical requirement for spacing of ties when reinforcing a concrete foundation wall is 24 inches on center. This spacing is established to ensure adequate support and stability for the wall by providing a uniform distribution of reinforcement throughout the structure.
Using ties at this spacing allows for sufficient strength and helps control cracking by providing a consistent framework that holds the reinforcing bars in the correct position during the pouring and curing of the concrete. It also ensures that the concrete can effectively bond with the reinforcing materials, which is essential for the overall durability and load-bearing capacity of the foundation wall.
Choosing a spacing that is closer than 24 inches, such as 12 or 16 inches, may not be necessary for most applications and could lead to increased material costs and labor without significant benefits. Alternatively, wider spacings, like 30 inches, could compromise the structural integrity of the wall, leading to insufficient reinforcement in critical areas. Therefore, the 24-inch spacing is a standard practice that balances functionality and efficiency in foundation reinforcement.