Is It Necessary to Use Straps in Cordwood Masonry?

When to Use Straps

Straps can be used to stabilize wall sections that are particularly long or heavy, or when the wall is subject to significant stress from wind, snow, or seismic activity. For example, in a 12-foot-tall cordwood wall, straps spaced 4 feet apart can provide sufficient support for the weight of the wall, especially when combined with a sturdy foundation and solid log ends.

Benefits of Strapping

Strapping can also help prevent wall movement and reduce the risk of damage from settling or shifting. Using 1/4-inch-thick straps made from durable materials like steel or nylon, spaced 2-3 feet apart, can effectively anchor the wall to a foundation system. This is particularly important in areas prone to high winds or earthquakes, where the added stability can be a lifesaver.

Strapping Techniques and Materials

For optimal results, use straps that are specifically designed for cordwood construction and have a minimum tensile strength of 1,000 pounds per square inch (PSI). When installing straps, ensure they are securely fastened to the foundation system and log ends, using a minimum of two 3-inch-long lag screws per strap. This will provide a solid anchor for the strap and prevent it from coming loose over time.